Professor Reza Moheimani
Adjunct Professor
School of Engineering (Electrical and Computer Engineering)
- Email:reza.moheimani@newcastle.edu.au
- Phone:(02) 4921 6030
Nanoscale engineering
With mobile devices, everyone wants maximum memory on the smallest piece of technology. So scientists are locked in a constant battle to find the most efficient methods of storing data.
In 2009 Professor Reza Moheimani collaborated with researchers at IBM Zurich using a unique nanotechnology approach to create what was then hailed as a world record for data storage: 840 gigabits of information on just one tiny computer chip measuring one square inch.
The achievement won the Institute of Electrical and Electronics Engineers Control System Technology Award, the most prestigious international prize in the field and gained a world record for nanopositioning accuracy. The team designed a control system with an accuracy of one quarter of a nanometre – approximately the diameter of an atom.
This exciting new technology is based on Micro Electro Mechanical Systems, or MEMS. Also known as micro machines, MEMS is the technology of very small mechanical devices made from Silicon and driven by electricity.
"This technology can potentially allow people to carry huge amounts of information on a tiny portable device," Moheimani says. "So an engineer or architect, for instance, could carry all of their drawings in the finest detail around on a pocket-sized device."
For those more interested in using mobile devices for recreational purposes, Moheimani says the extremely dense data storage capacity could hold 25 DVDs on a chip the size of a postage stamp.
Within the University's Centre for Complex Dynamic Systems and Control, he heads the program in mechatronics, a field that combines mechanical, electronic, computer and software engineering disciplines with control theory. Its application is diverse, spanning everything from industrial goods and transport systems to the health sector and personal entertainment devices.
"Nanotechnology is everywhere," Moheimani says. "Most scientists use nanotechnology but we are the ones developing it."
Moheimani established the Laboratory for Dynamics and Control of Nanosystems, a multi-million dollar, state-of-the-art research facility that is at the cutting edge of nanotechnology. Based at the University's Callaghan campus, the laboratory is unrivalled in Australia and is renowned for attracting PhD students and academic visitors from around the globe.
A recent Australian Research Council infrastructure grant will enable a significant expansion of the laboratory providing MEMS researchers world-class capacity for characterisations of micro-machined devices, ensuring they remain at the international forefront of this emerging field.
Moheimani continues to collaborate with the IBM team on the project and received a prestigious Australian Research Council Future Fellowship for his work in the field.
Visit the Centre for Complex and Dynamic Systems and Control
Nanoscale engineering
Professor Reza Moheimani collaborated with researchers at IBM Zurich using a nanotechnology approach to create what was hailed a world record for data storage.
Career Summary
Biography
S. O. Reza Moheimani received a BSc degree in Electrical and Electronics Engineering from shiraz University, Iran in 1990. He then moved to Australia and completed a MEngSc and a Ph.D. in electrical engineering at the University of New South Wales in 1993 (at UNSW's Kensington Campus, in Sydney) and 1996 (at UNSW's Australian Defence Force Academy Campus in Canberra), respectively. Following completion of his Ph.D. he was a postdoctoral research fellow at the Australian Defence Force Academy, Canberra, Australia.
In 1997 he took up an academic position at the University of Newcastle, where he is currently a Professor and an Australian Research Council Future Fellow in the School of Electrical Engineering and Computer Science. He founded, and directs, the Laboratory for Dynamics and Control of Nanosystems, a multi-million-dollar state-of-the-art research facility dedicated to the advancement of nanotechnology through innovations in systems theory, control engineering and mechatronics. From 2003 - 2010 he served as the Associate Director of Centre for Complex Dynamic Systems and Control (CDSC), an Australian Research Council Centre of Excellence.
His research has ranged across many areas including robust control theory and robust state estimation of uncertain dynamic systems, applications of control and estimation in nanoscale positioning systems for high-speed scanning probe microscopy, smart structures, active control of noise and vibration, mechatronics and applications of control in microlectromechanical systems (MEMS) and in emerging data storage systems, in which he has published over 250 articles in scientific journals and conference proceedings, as well as several books and edited volumes.
He has served on the editorial boards of a number of journals, including IEEE Transactions on Control Systems Technology, IEEE/ASME Transactions on Mechatronics, Control Engineering Practice and International Journal of Control, Automation and Systems. He has contributed to the organization of and has chaired several international conferences and workshops. His research has been recognized by a number of international awards, including: IFAC Nathaniel B. Nichols Medal (2014), IFAC Mechatronic Systems Award (2013), IEEE Control Systems Technology Award (2009) and IEEE Transactions on Control Systems Technology Outstanding Paper Award (2007). He is a Fellow of IEEE, a Fellow of IFAC and a Fellow of the Institute of Physics (UK).
Further information about his research can be found on the following web page:
http://mechatronics.newcastle.edu.au/reza/
Research ExpertiseMy main field of expertise is dynamics and control. My theoretical research interests encompass many aspects of robust control and estimation of uncertain dynamic systems, and modelling, identification and control of highly resonant systems. I have also been pursuing applications of the above theories in areas such as mechatronic systems, micro- and nano-systems and smart structures. This aspect of my research has involved a substantial experimental component in my laboratory for dynamics and control of nano-systems. I have also had extensive collaborations with industry (IBM Zurich Research Labs) and Government research organizations (DSTO). Recent research efforts have involved applying advanced control and signal processing methodologies to increase precision and operational bandwidth of scanning probe microscopes.
Qualifications
- PhD, University of New South Wales
- Bachelor of Science, Shiraz University - Iran
- Master of Engineering Science, University of New South Wales
Keywords
- Control
- MIcro and Nano Systems
- Signal Processing
- Smart Structures
- Vibration and Noise Control
Professional Experience
Academic appointment
Dates | Title | Organisation / Department |
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1/11/2009 - 1/12/2015 | Fellow | University of Newcastle School of Elect Engineering and Computer Science Australia |
Membership
Dates | Title | Organisation / Department |
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Associate Editor - Control Engineering Practice | Control Engineering Practice Journal Australia |
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Associate Editor - IEEE Transactions on Control Systems Technology | IEEE Transactions on Control Systems Technology Australia |
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Vice-Chair of Technical Committee on Mechatronic Systems | The International Federation of Automatic Control (IFAC) Austria |
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Senior Member - Institution of Electrical and Electronics Engineers (IEEE) | Institution of Electrical and Electronic Engineers Australia |
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1/8/2004 - 31/8/2004 | Guest Editor - Control Engineering Practice, Special Issue on Emerging Technologies fo Active Noise and Vibration Control Systems (August 2004) | Control Engineering Practice Journal Australia |
1/1/2001 - 31/1/2001 | Guest Editor - IEEE Transactions on Control Systems Technology, Special Issue on Dynamics & Control of Smart Structures (Jan. 2001) | IEEE Transactions on Control Systems Technology Australia |
Publications
For publications that are currently unpublished or in-press, details are shown in italics.
Book (4 outputs)
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2011 |
Eleftheriou E, Moheimani SO, Control Technologies for Emerging Micro and Nanoscale Systems, Springer Verlag, Berlin, Heidelberg, 292 (2011) [A3]
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2006 |
Moheimani SO, Fleming AJ, Piezoelectric Transducers for Vibration Control and Damping, Springer, Berlin, 271 (2006) [A1]
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2003 |
Moheimani SO, Halim D, Fleming AJ, Spatial Control of Vibration - Theory and Experiments, World Scientific Publishing Co. Pte. Ltd., Singapore, 223 (2003) [A1]
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2001 | Moheimani SO, Perspectives in Robust Control, Springer, Great Britain, 374 (2001) [A3] | ||||
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Chapter (4 outputs)
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2020 |
Ruppert M, Moheimani S, 'Dynamics and Control of Active Microcantilevers', Encyclopedia of Systems and Control, Springer, London, UK (2020) [B1]
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2015 |
Zhu Y, Moheimani SOR, Yuce MR, Bazaei A, 'Control issues of MEMS nanopositioning devices', Nanopositioning Technologies: Fundamentals and Applications 325-346 (2015) [B1] In this chapter, the control issues of microelectromechanical system (MEMS) nanopositioning devices are introduced and discussed. The real-time feedback control of a novel micro-m... [more] In this chapter, the control issues of microelectromechanical system (MEMS) nanopositioning devices are introduced and discussed. The real-time feedback control of a novel micro-machined 1-degree-of-freedom (1-DoF) thermal nanopositioner with on-chip electrothermal position sensors is presented. The actuation works based on the thermal expansion of V-shaped silicon beams. The sensing mechanism works based on measuring the resistance difference between two electrically biased identical silicon beams. The resistance difference varies with displacement. The heat conductance of the sensor beams varies oppositely with the position of the movable stage, resulting in different beam temperatures and resistances. A pair of position sensors are operated in differential mode to reduce low-frequency drift. The micro-machined nanopositioner has a nonlinear static input-output characteristic. The electrothermal actuator has a dynamic range of 14.4 µm and the electrothermal sensor has a low drift of 8.9 nm over 2000 s. An open-loop controller is first designed and implemented. It is experimentally shown that uncertainties result in unacceptable positioning performance. Hence, feedback control is required for accurate positioning. The on-chip displacement sensor is able to provide high-resolution displacement control. Therefore, a real-time closed-loop feedback control system is designed using a proportional-integral (PI) controller together with the nonlinear compensator used for the open-loop control system. The closed-loop system provides acceptable and robust tracking resolution for a wide range of set point values. The step response results show a positioning resolution of 7.9 nm and a time constant of 1.6 ms in a 10 µm stroke. For triangular reference tracking, which is required in raster-scanned scanning probe microscopy (SPM), the steady-state tracking error has a standard deviation of 20 nm within a wide range of 10 µm.
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2015 |
Moheimani SOR, 'Control for High-Speed Nanopositioning.', Encyclopedia of Systems and Control, Springer (2015)
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2011 |
Bazaei A, Yong YK, Moheimani SO, Sebastian A, 'High-speed, ultra-high-precision nanopositioning: A signal transformation approach', Control Technologies for Emerging Micro and Nanoscale Systems, Springer Verlag, Berlin, Heidelberg 47-65 (2011) [B1]
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Journal article (201 outputs)
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2020 |
Nikooienejad N, Alipour A, Maroufi M, Moheimani SOR, 'Video-Rate Non-Raster AFM Imaging with Cycloid Trajectory', IEEE Transactions on Control Systems Technology, 28 436-447 (2020) [C1] We demonstrate the application of the internal model principle in tracking a sequential cycloid trajectory to achieve video-rate atomic force microscope (AFM) imaging. To generate... [more] We demonstrate the application of the internal model principle in tracking a sequential cycloid trajectory to achieve video-rate atomic force microscope (AFM) imaging. To generate a sequential cycloid pattern, one axis of the nanopositioner traces a sinusoidal signal superimposed on a slow triangular wave. Discontinuities at turning points induce large peaks in the steady-state tracking error. To address this issue, a smooth trajectory is designed to reduce the magnitude of error by 60 nm compared with the triangular wave. This trajectory reduces the magnitude of error 10 times. The tracking controller includes the dynamics of the harmonic waveforms and the ramp signal as well as higher order harmonics of the scanning frequency, and an integrator to cope with the system nonlinearities at low frequencies. We perform experiments on a two degree of freedom microelectromechanical system nanopositioner at various scanning frequencies ranging from 500 to 2580 Hz within a scan area of 5 µ m × 10 µ m. The root-mean-square value of tracking error remains below 6.1 nm with a pitch size of 44.2 nm. We acquire time-lapse AFM images in contact mode at scan rates as high as 20 frames per second.
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2019 |
Nikooienejad N, Maroufi M, Moheimani SOR, 'Rosette-scan video-rate atomic force microscopy: Trajectory patterning and control design', Review of Scientific Instruments, 90 (2019) [C1] We present an analysis and a systematic design methodology for a novel nonraster scan method based on a rosette pattern and demonstrate its application in video-rate atomic force ... [more] We present an analysis and a systematic design methodology for a novel nonraster scan method based on a rosette pattern and demonstrate its application in video-rate atomic force microscopy. This pattern is traced when the lateral axes of a parallel kinematic scanner are commanded to follow a combination of two sinusoids with identical amplitudes and different frequencies. We design an internal-model-based controller to enhance the tracking performance of this pattern and implement the scheme on a microelectromechanical system scanner. The results reveal high-precision tracking of the rosette pattern in order to acquire time-lapsed atomic force microscope images at the rate of 10 frames/s.
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2019 |
Tajaddodianfar F, Reza Moheimani SO, Randall JN, 'Scanning Tunneling Microscope Control: A Self-Tuning PI Controller Based on Online Local Barrier Height Estimation', IEEE Transactions on Control Systems Technology, 27 2004-2015 (2019) [C1] We identify the dynamics of a scanning tunneling microscope (STM) in closed loop and show that the plant dc gain is proportional to the square root of local barrier height (LBH), ... [more] We identify the dynamics of a scanning tunneling microscope (STM) in closed loop and show that the plant dc gain is proportional to the square root of local barrier height (LBH), a quantum mechanical property of the sample and/or tip that affects the tunneling current. We demonstrate that during a scan, the LBH may undergo significant variations and this can adversely affect the closed-loop stability if the controller parameters remain fixed. Feedback instabilities increase the risk of tip-sample crash in STMs. In order to improve the closed-loop performance, we estimate the LBH, on the fly, and use that to adaptively tune the proportional-integral (PI) controller parameters. Experimental results obtained with the self-tuning PI controller confirm the improved STM performance compared to the conventional fixed-gain PI controller. Additional experiments confirm effectiveness of the proposed method in extending the tip lifetime by lowering the chance of a tip/sample crash.
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2019 |
Alipour A, Coskun MB, Moheimani SOR, 'A high bandwidth microelectromechanical system-based nanopositioner for scanning tunneling microscopy', REVIEW OF SCIENTIFIC INSTRUMENTS, 90 (2019) [C1]
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2019 |
Coskun MB, Alemansour H, Fowler AG, Maroufi M, Moheimani SOR, 'Q Control of an Active AFM Cantilever With Differential Sensing Configuration', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 27 2271-2278 (2019) [C1]
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2018 |
Maroufi M, Alemansour H, Bulut Coskun M, Reza Moheimani SO, 'An adjustable-stiffness MEMS force sensor: Design, characterization, and control', Mechatronics, 56 198-210 (2018) [C1] This paper presents a novel one-degree-of-freedom microelectromechanical systems (MEMS) force sensor. The high-bandwidth device contains on-chip sensing and actuation mechanisms, ... [more] This paper presents a novel one-degree-of-freedom microelectromechanical systems (MEMS) force sensor. The high-bandwidth device contains on-chip sensing and actuation mechanisms, enabling open- and closed-loop modalities. An active compliance mechanism is incorporated to render the device more conducive to characterization of soft samples. When operated in closed loop, the adjustable stiffness enables the sensor to attain a larger dynamic range and minimize the nonlinearities originating from flexures. Analytical models are employed to design and calibrate the sensor. In open loop, the sensing resolution of 23.3 nN within a bandwidth of 2.35 kHz and a full-scale range of ± 42.6 µ N are experimentally obtained. The resolution is enhanced to 9.3 nN by employing an active compliance mechanism. When operated in closed loop, a resolution of 12.9 nN is achieved within a dynamic range of 71.2 dB and a sensing bandwidth of 3.6 kHz is demonstrated. The sensor performance is tested by obtaining the stiffness of an atomic force microscope probe and measuring the force produced by a self-actuated piezoelectric microcantilever.
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2018 |
Bazaei A, Chen Z, Yong YK, Moheimani SOR, 'A Novel State Transformation Approach to Tracking of Piecewise Linear Trajectories', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 26 128-138 (2018) [C1]
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2018 |
Tajaddodianfar F, Moheimani SOR, Owen J, Randall JN, 'On the effect of local barrier height in scanning tunneling microscopy: Measurement methods and control implications', REVIEW OF SCIENTIFIC INSTRUMENTS, 89 (2018) [C1]
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2018 |
Randall JN, Owen JHG, Lake J, Saini R, Fuchs E, Mahdavi M, et al., 'Highly parallel scanning tunneling microscope based hydrogen depassivation lithography', JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 36 (2018) [C1]
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2017 |
Coskun MB, Fowler AG, Maroufi M, Moheimani SOR, 'On-Chip Feedthrough Cancellation Methods for Microfabricated AFM Cantilevers With Integrated Piezoelectric Transducers', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 26 1287-1297 (2017) [C1]
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2017 |
Ruppert MG, Fowler AG, Maroufi M, Moheimani SOR, 'On-Chip Dynamic Mode Atomic Force Microscopy: A Silicon-on-Insulator MEMS Approach', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 26 215-225 (2017) [C1]
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2017 |
Ruppert MG, Harcombe DM, Ragazzon MRP, Moheimani SOR, Fleming AJ, 'A review of demodulation techniques for amplitude-modulation atomic force microscopy', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 8 1407-1426 (2017) [C1]
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2017 |
Maroufi M, Moheimani SOR, 'An SOI-MEMS Piezoelectric Torsional Stage With Bulk Piezoresistive Sensors', IEEE SENSORS JOURNAL, 17 3030-3040 (2017) [C1]
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2017 |
Maroufi M, Fowler AG, Moheimani SOR, 'MEMS for Nanopositioning: Design and Applications', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 26 469-500 (2017) [C1]
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2017 |
Bazaei A, Yong YK, Moheimani SOR, 'Combining Spiral Scanning and Internal Model Control for Sequential AFM Imaging at Video Rate', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 22 371-380 (2017) [C1]
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2016 |
Ruppert MG, Moheimani SOR, 'Multimode Q Control in Tapping-Mode AFM: Enabling Imaging on Higher Flexural Eigenmodes', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 24 1149-1159 (2016) [C1]
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2016 |
Bazaei A, Maroufi M, Fowler AG, Moheimani SOR, 'Internal Model Control for Spiral Trajectory Tracking with MEMS AFM Scanners', IEEE Transactions on Control Systems Technology, 24 1717-1728 (2016) [C1] We demonstrate the application of internal model control for accurate tracking of spiral scan trajectories, where the reference signals are orthogonal sinusoids whose amplitudes l... [more] We demonstrate the application of internal model control for accurate tracking of spiral scan trajectories, where the reference signals are orthogonal sinusoids whose amplitudes linearly vary with time. The plant is a 2-D microelectromechanical system nanopositioner equipped with in situ differential electrothermal sensors and electrostatic actuators. This device is used as the scanner stage in an atomic-force microscope. Additional internal model components are included in the controllers to compensate for the residual tracking errors due to plant nonlinearities. In a large scan range with a diameter of 16 µm, we achieved tracking of 1430-Hz spiral sinusoids, a frequency beyond the undamped fundamental resonance of the plant at 1340 Hz. This leads to a video-rate scan speed of 18 frames/s.
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2016 |
Maroufi M, Moheimani SOR, 'A 2DOF SOI-MEMS Nanopositioner With Tilted Flexure Bulk Piezoresistive Displacement Sensors', IEEE SENSORS JOURNAL, 16 1908-1917 (2016) [C1]
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2016 |
Ruppert MG, Karvinen KS, Wiggins SL, Moheimani SOR, 'A Kalman Filter for Amplitude Estimation in High-Speed Dynamic Mode Atomic Force Microscopy', IEEE Transactions on Control Systems Technology, 24 276-284 (2016) [C1] A fundamental challenge in dynamic mode atomic force microscopy (AFM) is the estimation of the cantilever oscillation amplitude from the deflection signal, which might be distorte... [more] A fundamental challenge in dynamic mode atomic force microscopy (AFM) is the estimation of the cantilever oscillation amplitude from the deflection signal, which might be distorted by noise and/or high-frequency components. When the cantilever is excited at resonance, its deflection is typically obtained via narrow-band demodulation using a lock-in amplifier (LIA). However, the bandwidth of this measurement technique is ultimately bounded by the low-pass filter, which must be employed after demodulation to attenuate the component at twice the carrier frequency. Furthermore, to measure the amplitude of multiple frequency components, such as higher eigenmodes and/or higher harmonics in multifrequency AFM, multiple LIAs must be employed. In this paper, the authors propose the estimation of amplitude and phase using a linear time-varying Kalman filter that is easily extended to multiple frequencies. Experimental results are obtained using square-modulated sine waves and closed-loop AFM scans, verifying the performance of the proposed Kalman filter.
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2016 |
Ruppert MG, Moheimani SOR, 'High-bandwidth multimode self-sensing in bimodal atomic force microscopy', Beilstein Journal of Nanotechnology, 7 284-295 (2016) [C1] Using standard microelectromechanical system (MEMS) processes to coat a microcantilever with a piezoelectric layer results in a versatile transducer with inherent self-sensing cap... [more] Using standard microelectromechanical system (MEMS) processes to coat a microcantilever with a piezoelectric layer results in a versatile transducer with inherent self-sensing capabilities. For applications in multifrequency atomic force microscopy (MF-AFM), we illustrate that a single piezoelectric layer can be simultaneously used for multimode excitation and detection of the cantilever deflection. This is achieved by a charge sensor with a bandwidth of 10 MHz and dual feedthrough cancellation to recover the resonant modes that are heavily buried in feedthrough originating from the piezoelectric capacitance. The setup enables the omission of the commonly used piezoelectric stack actuator and optical beam deflection sensor, alleviating limitations due to distorted frequency responses and instrumentation cost, respectively. The proposed method benefits from a more than two orders of magnitude increase in deflection to strain sensitivity on the fifth eigenmode leading to a remarkable signal-to-noise ratio. Experimental results using bimodal AFM imaging on a two component polymer sample validate that the self-sensing scheme can therefore be used to provide both the feedback signal, for topography imaging on the fundamental mode, and phase imaging on the higher eigenmode.
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2016 |
Fowler AG, Moheimani SOR, 'A 4-DOF MEMS Energy Harvester Using Ultrasonic Excitation', IEEE SENSORS JOURNAL, 16 7774-7783 (2016) [C1]
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2016 |
Ruppert MG, Harcombe DM, Moheimani SOR, 'High-Bandwidth Demodulation in MF-AFM: A Kalman Filtering Approach', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 21 2705-2715 (2016) [C1]
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2016 |
Bazaei A, Maroufi M, Reza Moheimani SO, 'On the modeling of tilted fixed-guided flexible beams under tension', Acta Mechanica, 227 333-352 (2016) [C1] We derive explicit solutions for a fixed-guided slender suspension beam that is initially straight and tilted with respect to the moving direction of its sliding end. The beam exp... [more] We derive explicit solutions for a fixed-guided slender suspension beam that is initially straight and tilted with respect to the moving direction of its sliding end. The beam experiences substantial axial forces during the tension, resulting in a nonlinear boundary value problem. We consider sliding end displacements in the direction that cause longitudinal tension along the beam. We first propose an exact approach, leading to analytical solutions for various physical variables such as the transverse force and deflection profile, in terms of the axial force and the positive real solution of a third-order algebraic equation. We also propose an alternative approximate solution based on a second-order equation, which provides closed-form analytical solutions for the physical variables. We also introduce analytical validation techniques for the underlying assumptions. Consistency with nonlinear finite-element analysis is also addressed. Moreover, the results of the approximate method are represented by dimensionless formulas, generating charts to predict solutions for arbitrarily assigned beam parameters. Magnitudes of the normal and shear stress values are also included to consider the effects of yield and shear strengths as the limiting factors at large deflection conditions.
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2015 |
Maroufi M, Fowler AG, Bazaei A, Moheimani SOR, 'High-stroke silicon-on-insulator MEMS nanopositioner: Control design for non-raster scan atomic force microscopy', Review of Scientific Instruments, 86 (2015) [C1] A 2-degree of freedom microelectromechanical systems nanopositioner designed for on-chip atomic force microscopy (AFM) is presented. The device is fabricated using a silicon-on-in... [more] A 2-degree of freedom microelectromechanical systems nanopositioner designed for on-chip atomic force microscopy (AFM) is presented. The device is fabricated using a silicon-on-insulator-based process and is designed as a parallel kinematic mechanism. It contains a central scan table and two sets of electrostatic comb actuators along each orthogonal axis, which provides displacement ranges greater than ±10 µm. The first in-plane resonance modes are located at 1274 Hz and 1286 Hz for the X and Y axes, respectively. To measure lateral displacements of the stage, electrothermal position sensors are incorporated in the design. To facilitate high-speed scans, the highly resonant dynamics of the system are controlled using damping loops in conjunction with internal model controllers that enable accurate tracking of fast sinusoidal set-points. To cancel the effect of sensor drift on controlled displacements, washout controllers are used in the damping loops. The feedback controlled nanopositioner is successfully used to perform several AFM scans in contact mode via a Lissajous scan method with a large scan area of 20 µm × 20 µm. The maximum scan rate demonstrated is 1 kHz.
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2015 |
Fowler AG, Maroufi M, Moheimani SOR, 'Note: A silicon-on-insulator microelectromechanical systems probe scanner for on-chip atomic force microscopy.', Rev Sci Instrum, 86 046107 (2015) [C1]
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2015 |
Piriyanont B, Fowler AG, Moheimani SOR, 'Force-Controlled MEMS Rotary Microgripper', Journal of Microelectromechanical Systems, (2015) [C1] This paper presents a force-controlled microelectromechanical systems rotary microgripper with integrated electrothermal sensors. The proposed microgripper achieves a large displa... [more] This paper presents a force-controlled microelectromechanical systems rotary microgripper with integrated electrothermal sensors. The proposed microgripper achieves a large displacement (85 µm) at low driving voltages (=80 V). Closed-loop force control is implemented to ensure the safety of the operation where the controller gain is experimentally tuned so that the desired response is achieved. One of the main contributions of this work is the implementation of a null-displacement feedback control force-sensing technique, where the controller counteracts the input disturbance (contact force) and an integrated electrothermal displacement sensor provides a feedback signal to close the control loop. In this manner, the contact force is measured without moving the structure. Finally, the effectiveness of the controller and the performance of the proposed microgripper are verified by a set of experiments. The results demonstrate the satisfactory performance of the proposed force-controlled microgripper in a practical application. [2014-0374]
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2015 |
Moore SI, Coskun MB, Alan T, Neild A, Moheimani SOR, 'Feedback-Controlled MEMS Force Sensor for Characterization of Microcantilevers', Journal of Microelectromechanical Systems, (2015) [C1] This paper outlines the design and characterization of a setup used to measure the stiffness of microcantilevers and other small mechanical devices. Due to the simplicity of fabri... [more] This paper outlines the design and characterization of a setup used to measure the stiffness of microcantilevers and other small mechanical devices. Due to the simplicity of fabrication, microcantilevers are used as the basis for a variety of mechanical sensor designs. In a range of applications, knowledge of the stiffness of microcantilevers is essential for the accurate calibration of the sensors in which they are used. Stiffness is most commonly identified through measurement of the microcantilever's resonance frequency, which is applied to an empirically derived model. This paper uses a microelectromechanical system (MEMS)-based force sensor to measure the forces produced by a microcantilever when deformed and a piezoelectric tube-based nanopositioner to displace the microcantilever. A method of calibrating the force sensor is presented that takes advantage of the lumped nature of the mechanical system and the nonlinearity of MEMS electrostatic drives. [2014-0183]
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2015 |
Yong YK, Moheimani SOR, 'Collocated Z-Axis Control of a High-Speed Nanopositioner for Video-Rate Atomic Force Microscopy', IEEE Transactions on Nanotechnology, 14 338-345 (2015) [C1] A key hurdle to achieve video-rate atomic force microscopy (AFM) in constant-force contact mode is the inadequate bandwidth of the vertical feedback control loop. This paper descr... [more] A key hurdle to achieve video-rate atomic force microscopy (AFM) in constant-force contact mode is the inadequate bandwidth of the vertical feedback control loop. This paper describes techniques used to increase the vertical tracking bandwidth of a nanopositioner to a level that is sufficient for video-rate AFM. These techniques involve the combination of: a high-speed XYZ nanopositioner; a passive damping technique that cancels the inertial forces of the Z actuator which in turns eliminates the low 20-kHz vertical resonant mode of the nanopositioner; an active control technique that is used to augment damping to high vertical resonant modes at 60 kHz and above. The implementation of these techniques allows a tenfold increase in the vertical tracking bandwidth, from 2.3 (without damping) to 28.1 kHz. This allows high-quality, video-rate AFM images to be captured at 10 frames/s without noticeable artifacts associated with vibrations and insufficient vertical tracking bandwidth.
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2015 |
Mohammadi A, Moheimani SOR, Yuce MR, 'Parallel averaging for thermal noise mitigation in MEMS electrothermal displacement sensors', Journal of Microelectromechanical Systems, 24 4-6 (2015) [C1] © 2014 IEEE. The sensitivity of an electrothermal displacement sensor increases with its temperature, whereas a higher temperature range leads to higher thermal noise level, which... [more] © 2014 IEEE. The sensitivity of an electrothermal displacement sensor increases with its temperature, whereas a higher temperature range leads to higher thermal noise level, which imposes a tradeoff on the sensor's achievable resolution. We have developed a multiple sensor displacement measurement technique on a 1-degree-of-freedom silicon-on-insulator microelectromechanical systems nanopositioner that mitigates the mentioned tradeoff. To obtain maximum improvement, it is necessary to supply equal power to all of the sensors to ensure equal sensitivity. By combining three identical sensors, we have successfully achieved a 4-dB improvement in signal-to-noise ratio, which is in a good agreement with the averaging theory. Experiments show that the displacement resolution is improved from 0.3 to 0.15 nm/(Hz) in the prototype nanopositioner. Furthermore, improvement is possible by increasing the number of sensors around the stage. [2014-0120]
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2015 |
Maroufi M, Bazaei A, Reza Moheimani SO, 'A high-bandwidth MEMS nanopositioner for on-chip AFM: Design, characterization, and control', IEEE Transactions on Control Systems Technology, 23 504-512 (2015) [C1] © 1993-2012 IEEE. We report the design, characterization, and control of a high-bandwidth microelectromechanical systems (MEMS) nanopositioner for on-chip atomic force microscopy ... [more] © 1993-2012 IEEE. We report the design, characterization, and control of a high-bandwidth microelectromechanical systems (MEMS) nanopositioner for on-chip atomic force microscopy (AFM). For the fabrication, a commercially available process based on silicon-on-insulator is used. The device consists of a scan table, moved in the x - y plane by two sets of electrostatic comb actuators, capable of generating strokes in excess of ±5 µm. The first resonance frequencies of the nanopositioner are approximately 4.4 and 5.3 kHz in lateral directions. Electrothermal sensors are used to measure the displacement of the scan table. To enable fast scans, a dynamic model of the system is identified and used to design a feedback controller that damps the oscillatory behavior of the device. The nanopositioner is tested as the scanning stage of an AFM to perform high-speed scans.
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2015 |
Maroufi M, Bazaei A, Mohammadi A, Reza Moheimani SO, 'Tilted Beam Piezoresistive Displacement Sensor: Design, Modeling, and Characterization', Journal of Microelectromechanical Systems, (2015) [C1] We present a comprehensive study of the design, modeling, and characterization of an on-chip piezoresistive displacement sensor. The design is based on the bulk piezoresistivity o... [more] We present a comprehensive study of the design, modeling, and characterization of an on-chip piezoresistive displacement sensor. The design is based on the bulk piezoresistivity of tilted clamped-guided beams without the need for additional steps to generate doped regions. The sensor is implemented in a one-degree-of-freedom microelectromechanical system (MEMS) nanopositioner, where the beams also function as the suspension system. A standard MEMS fabrication process is used to realize the device on single-crystalline silicon as the structural material. The beams are oppositely tilted to develop tensile and compressive axial forces during stage movement, creating a differential sensing feature. An analytical approach is proposed for modeling and design of the tilted clamped-guided beams. The linearity of the sensor in the differential configuration is investigated analytically. The static, dynamic, and noise characteristics of the sensor are presented, followed by a model-based investigation of the measured dynamic feedthrough. [2015-0030]
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2015 |
Maroufi M, Fowler AG, Reza Moheimani SO, 'MEMS Nanopositioner for On-Chip Atomic Force Microscopy: A Serial Kinematic Design', Journal of Microelectromechanical Systems, (2015) [C1] The design and characterization of a two-degree-of-freedom serial kinematic microelectromechanical systems (MEMS) nanopositioner for on-chip atomic force microscopy (AFM) is repor... [more] The design and characterization of a two-degree-of-freedom serial kinematic microelectromechanical systems (MEMS) nanopositioner for on-chip atomic force microscopy (AFM) is reported. A novel design is introduced to achieve a serial kinematic mechanism based on a standard silicon-on-insulator MEMS fabrication process. The nanopositioner comprises a slow axis with a resonance frequency of 2.4 kHz and a fast axis with a resonance frequency of above 4.4 kHz, making it ideal for rastering, as required in the AFM. Strokes of 14 and 9 µm are experimentally achieved for the fast and slow axes, respectively. The serial kinematic design of the stage enables the cross-coupling between the two axes of motion to be as low as -60 dB. Electrothermal displacement sensors are incorporated in the device, which may be used to enable feedback control as required in high-speed AFM. [2014-0248]
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2015 |
Moore SI, Moheimani SOR, 'Vibration Control With MEMS Electrostatic Drives: A Self-Sensing Approach', IEEE Transactions on Control Systems Technology, 23 1237-1244 (2015) [C1] Nanopositioning is the actuation and sensing of motion on the nanometer scale and recent nanopositioner designs have been utilizing microelectromechanical systems (MEMS). This bri... [more] Nanopositioning is the actuation and sensing of motion on the nanometer scale and recent nanopositioner designs have been utilizing microelectromechanical systems (MEMS). This brief demonstrates a simple method to implement vibration control on a MEMS nanopositioner. The actuation and sensing of the system are performed with a MEMS electrostatic drive. The electrostatic drive is arranged to be self-sensing, that is, the drive's voltage is used to actuate the system and the drive's current is used to observe the system. With this arrangement, the current is proportional to velocity at the resonance frequency and velocity feedback is used to damp the nanopositioner. To filter the current signal and recover a displacement signal, a charge measurement may be preferred to a current measurement. The self-sensing arrangement was modified to be a charge sensor and resonant control was applied to damp the nanopositioner. With this arrangement, the gain at the resonance frequency was attenuated by 18.45 dB.
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2014 |
Wadikhaye SP, Yong YK, Reza Moheimani SO, 'A serial-kinematic nanopositioner for high-speed atomic force microscopy', Review of Scientific Instruments, 85 (2014) [C1] A flexure-guided serial-kinematic XYZ nanopositioner for high-speed Atomic Force Microscopy is presented in this paper. Two aspects influencing the performance of serial-kinematic... [more] A flexure-guided serial-kinematic XYZ nanopositioner for high-speed Atomic Force Microscopy is presented in this paper. Two aspects influencing the performance of serial-kinematic nanopositioners are studied in this work. First, mass reduction by using tapered flexures is proposed to increased the natural frequency of the nanopositioner. 25% increase in the natural frequency is achieved due to reduced mass with tapered flexures. Second, a study of possible sensor positioning in a serial-kinematic nanopositioner is presented. An arrangement of sensors for exact estimation of cross-coupling is incorporated in the proposed design. A feedforward control strategy based on phaser approach is presented to mitigate the dynamics and nonlinearity in the system. Limitations in design approach and control strategy are discussed in the Conclusion.
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2014 |
Coskun MB, Moore S, Moheimani SOR, Neild A, Alan T, 'Zero displacement microelectromechanical force sensor using feedback control', APPLIED PHYSICS LETTERS, 104 (2014) [C1]
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2014 |
Bazaei A, Moheimani SOR, 'Synthesis of modulated-demodulated control systems', Automatica, (2014) [C1] We propose systematic design methods for realization of a given LTI compensator with complex poles using a modulated-demodulated control framework. Applicability of the proposed r... [more] We propose systematic design methods for realization of a given LTI compensator with complex poles using a modulated-demodulated control framework. Applicability of the proposed realization methods is established through simulations performed on an undamped resonant plant compensated by a low gain controller to obtain better noise rejection performance. It is demonstrated how a modulated-demodulated structure may reduce the sampling rate in a hybrid control system. In addition, superior robust performance is achieved against variations in baseband parameters using direct reference injection into the modulated-demodulated control systems compared to the indirect injection approach. © 2014 Elsevier Ltd. All rights reserved.
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2014 |
Karvinen KS, Moheimani SOR, 'A high-bandwidth amplitude estimation technique for dynamic mode atomic force microscopy', REVIEW OF SCIENTIFIC INSTRUMENTS, 85 (2014) [C1]
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2014 |
Karvinen KS, Moheimani SOR, 'Control of the higher eigenmodes of a microcantilever: Applications in atomic force microscopy', ULTRAMICROSCOPY, 137 66-71 (2014) [C1]
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2014 |
Mohammadi A, Moheimani SOR, Yuce MR, 'A comparison of two excitation modes for MEMS electrothermal displacement sensors', IEEE Electron Device Letters, 35 584-586 (2014) [C1] MEMS electrothermal displacement sensors can be operated in constant current (CC) or constant voltage (CV) excitation modes. The CV mode is more commonly used. However, there have... [more] MEMS electrothermal displacement sensors can be operated in constant current (CC) or constant voltage (CV) excitation modes. The CV mode is more commonly used. However, there have been reports that the CC excitation mode may lead to a larger measured signal, and thus, it may be a better choice than the CV mode. In this letter, we present an analytic comparison of the two methods, and show that from a signal-to-noise-ratio point of view, benefits of operating a sensor in CC mode are only marginal. The analytical investigation is supported by experiments performed on sensors integrated in a SOI-MEMS nanopositioner with low noise read out circuits, which leads to 0.04 Hz displacement resolution for both excitation modes. © 2014 IEEE.
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2014 |
Fairbairn MW, Müller P, Moheimani SOR, 'Sensorless implementation of a PPF controller for active Q control of an AFM microcantilever', IEEE Transactions on Control Systems Technology, 22 2118-2126 (2014) [C1] Reducing the cantilever quality $(Q)$ factor in the atomic force microscope (AFM), when operating in tapping mode, allows for an increase in imaging speed. Passive piezoelectric s... [more] Reducing the cantilever quality $(Q)$ factor in the atomic force microscope (AFM), when operating in tapping mode, allows for an increase in imaging speed. Passive piezoelectric shunt control has several advantages over alternative methods of cantilever $Q$ factor reduction. However, this technique uses a passive electrical impedance to modify the mechanical dynamics of the cantilever, which limits the amount of $Q$ factor reduction achievable. This paper demonstrates that further reductions in the cantilever $Q$ factor may be obtained with the use of an active impedance in the piezoelectric shunt control framework. The active impedance parameters are designed in such a way that the piezoelectric shunt controller emulates a positive position feedback controller in a displacement feedback control loop. A significant reduction in cantilever $Q$ factor is obtained using an active impedance compared with that achieved with a passive impedance. The improvement in scan speed using this control technique is demonstrated with AFM images of a test sample.
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2014 |
Wadikhaye SP, Yong YK, Bhikkaji B, Moheimani SOR, 'Control of a piezoelectrically actuated high-speed serial-kinematic AFM nanopositioner', SMART MATERIALS AND STRUCTURES, 23 (2014) [C1]
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2014 |
Piriyanont B, Moheimani SOR, 'MEMS rotary microgripper with integrated electrothermal force sensor', Journal of Microelectromechanical Systems, 23 1249-1251 (2014) [C1] A microelectromechanical systems (MEMS) rotary microgripper incorporating electrothermal force sensors is reported. The device is fabricated using a standard SOI-MEMS process and ... [more] A microelectromechanical systems (MEMS) rotary microgripper incorporating electrothermal force sensors is reported. The device is fabricated using a standard SOI-MEMS process and achieves a stroke of (90 µm) at a relatively low voltage (<80 V). The electrothermal force sensor has a small footprint, is quite linear, and operates with a high accuracy. Being fabricated from biocompatible material (silicon) with sufficiently long gripping arms, the gripper can be used to manipulate living cells, tissues, and other biologically relevant samples. A pick-and-place experiment on a soft cell is conducted to verify performance of the proposed rotary microgripper.
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2014 |
Moore SI, Moheimani SOR, 'Displacement Measurement With a Self-Sensing MEMS Electrostatic Drive', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 23 511-513 (2014) [C1]
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2014 |
Mohammadi A, Fowler AG, Yong YK, Moheimani SOR, 'A feedback controlled MEMS nanopositioner for on-chip high-speed AFM', Journal of Microelectromechanical Systems, 23 610-619 (2014) [C1] We report the design of a two-degree-of-freedom microelectromechanical systems nanopositioner for on-chip atomic force microscopy (AFM). The device is fabricated using a silicon-o... [more] We report the design of a two-degree-of-freedom microelectromechanical systems nanopositioner for on-chip atomic force microscopy (AFM). The device is fabricated using a silicon-on-insulator-based process to function as the scanning stage of a miniaturized AFM. It is a highly resonant system with its lateral resonance frequency at ~850 Hz. The incorporated electrostatic actuators achieve a travel range of 16 ~{&L~}m in each direction. Lateral displacements of the scan table are measured using a pair of electrothermal position sensors. These sensors are used, together with a positive position feedback controller, in a feedback loop, to damp the highly resonant dynamics of the stage. The feedback controlled nanopositioner is used, successfully, to generate high-quality AFM images at scan rates as fast as 100 Hz. © 2013 IEEE.
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2014 |
Rakotondrabe M, Fowler AG, Moheimani SOR, 'Control of a Novel 2-DoF MEMS Nanopositioner With Electrothermal Actuation and Sensing', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 22 1486-1497 (2014) [C1]
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2014 |
Bazaei A, Moheimani SOR, Yong YK, 'Improvement of transient response in signal transformation approach by proper compensator initialization', IEEE Transactions on Control Systems Technology, 22 729-736 (2014) [C1] In this brief, the transient performance of the signal transformation approach (STA) is considerably enhanced by initializing the state vector of the compensator to appropriate va... [more] In this brief, the transient performance of the signal transformation approach (STA) is considerably enhanced by initializing the state vector of the compensator to appropriate values. For triangular reference tracking, it is shown that the proposed method is identical to the impulsive state multiplication (ISM) approach. Through simulations and experiments, we also show that the proposed method can be equally applied to improve the STA for arbitrarily shaped desired signals, where ISM is not applicable. Tracking efficacy of the proposed method compared with that of an ordinary feedback loop with a similar noise rejection performance is also demonstrated. © 2013 IEEE.
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2014 |
Bazaei A, Moheimani SOR, 'A comprehensive analysis of MEMS electrothermal displacement sensors', IEEE Sensors Journal, 14 3183-3192 (2014) [C1] For electrothermal microelectromechanical system position sensors, we introduce a novel analytical model that captures the nonuniform distribution of temperature as well as the no... [more] For electrothermal microelectromechanical system position sensors, we introduce a novel analytical model that captures the nonuniform distribution of temperature as well as the nonlinear dependence of resistivity on temperature. The proposed model also captures the effects of contoured beam heaters and the nonuniformity of the air gap between the heat-sink and the heaters, which varies with heat-sink position and is differentially transduced into the output voltage. The model accurately predicts the experimentally obtained I - V data and the corresponding sensor output. It also explains the considerable improvement achieved in the linearity of the sensor response when the beam profiles are appropriately shaped to yield a more uniform temperature distribution. The shaped sensor is compared with conventional uniform electrothermal sensors under two different operating conditions, voltage, and current bias modes. Improved linearity is observed in both cases. The model is also applicable to predict the dynamic response of the sensor. An iterative procedure is developed to solve the additional complexity in voltage mode, which is a nonlinear partial integro-differential equation. Considering different bias modes and heater profiles, we evaluate the sensor bandwidth and linearity using the model and conduct experiments to validate the results. Based on first principles, the proposed model is more transparent than sophisticated software-based approaches and compatible with traditional solvers in MATLAB. © 2014 IEEE.
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2014 |
Yong YK, Bazaei A, Moheimani SOR, 'Video-rate lissajous-scan atomic force microscopy', IEEE Transactions on Nanotechnology, 13 85-93 (2014) [C1] Raster scanning is common in atomic force microscopy (AFM). The nonsmooth raster waveform contains high-frequency content that can excite mechanical resonances of an AFM nanoposit... [more] Raster scanning is common in atomic force microscopy (AFM). The nonsmooth raster waveform contains high-frequency content that can excite mechanical resonances of an AFM nanopositioner during a fast scan, causing severe distortions in the resulting image. The mainstream approach to avoid scan-induced vibrations in video-rate AFM is to employ a high-bandwidth nanopositioner with the first lateral resonance frequency above 20 kHz. In this paper, video-rate scanning on a nanopositioner with 11.3-kHz resonance frequency is reported using a smooth Lissajous scan pattern. The Lissajous trajectory is constructed by tracking two sinusoidal waveforms on the lateral axes of the nanopositioner. By combining an analog integral resonant controller (IRC) with an internal model controller, 1-and 2-kHz single tone set-points were successfully tracked. High-quality time lapsed AFM images of a calibration grating recorded at 9 and 18 frames/s without noticeable image distortions are reported. © 2013 IEEE.
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2014 |
Karvinen KS, Ruppert MG, Mahata K, Moheimani SOR, 'Direct tip-sample force estimation for high-speed dynamic mode atomic force microscopy', IEEE Transactions on Nanotechnology, 13 1257-1265 (2014) [C1] We present new insights into the modeling of the microcantilever in dynamic mode atomic force microscopy and outline a novel high-bandwidth tip-sample force estimation technique f... [more] We present new insights into the modeling of the microcantilever in dynamic mode atomic force microscopy and outline a novel high-bandwidth tip-sample force estimation technique for the development of high-bandwidth z -axis control. Fundamental to the proposed technique is the assumption that in tapping mode atomic force microscopy, the tip-sample force takes the form of an impulse train. Formulating the estimation problem as a Kalman filter, the tip-sample force is estimated directly; thus, potentially enabling high-bandwidth z-axis control by eliminating the dependence of the control technique on microcantilever dynamics and the amplitude demodulation technique. Application of this technique requires accurate knowledge of the models of the microcantilever; a novel identification method is proposed. Experimental data are used in an offline analysis for verification.
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2014 |
Fowler AG, Moheimani SOR, Behrens S, 'An omnidirectional MEMS ultrasonic energy harvester for implanted devices', Journal of Microelectromechanical Systems, 23 1454-1462 (2014) [C1] This paper presents the design and characterization of a microelectromechanical systems (MEMS)-based energy harvester with target applications, including implanted biomedical sens... [more] This paper presents the design and characterization of a microelectromechanical systems (MEMS)-based energy harvester with target applications, including implanted biomedical sensors and actuators. The harvester is designed to utilize ultrasonic waves from an external transmitter for mechanical excitation, with electrostatic transducers being used to convert the vibrations of a central mass structure into electrical energy. The device features a novel 3-degrees of freedom design, which enables energy to be produced by the harvester in any orientation. The harvester is fabricated using a conventional silicon-on-insulator MEMS process, with experimental testing showing that the system is able to generate 24.7, 19.8, and 14.5nW of electrical power, respectively, via the device's x-, y-, and z-axis resonance modes over a 15-s period.
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2014 |
Karvinen KS, Moheimani SOR, 'Modulated-demodulated control: Q control of an AFM microcantilever', Mechatronics, 24 661-671 (2014) [C1] We outline the application of modulated-demodulated control to the quality (Q) factor control of an atomic force microscope microcantilever. We review the modulated-demodulated co... [more] We outline the application of modulated-demodulated control to the quality (Q) factor control of an atomic force microscope microcantilever. We review the modulated-demodulated control technique, emphasize its linear time invariant nature and develop state space representations of the controller for design and analysis. The modulated-demodulated controller can be configured as both positive position feedback (PPF) and resonant controllers, which are effective in the control of negative imaginary systems. Negative imaginary systems theory has important application in the control of collocated mechanical systems and we briefly summarize the key relevant results. A high-frequency, tunable modulated-demodulated controller, designed specifically for MHz operation, was developed for experimental validation. The modulated-demodulated controller enables the use of a low-bandwidth baseband controller in the configuration of a high-bandwidth controller, thus simplifying the implementation of high-bandwidth controllers. We outline the controller characterization and demonstrate closed-loop control of a Bruker DMASP microcantilever. We also present AFM images highlighting the improvements in scan speed and image quality achieved as a result of Q control. Modulated-demodulated control appears well suited to the control of high-frequency resonant dynamics. In addition to high-speed atomic force microscopy, we believe this control technique may find applications in high-frequency microelectromechanical systems (MEMS). © 2014 Elsevier Ltd. All rights reserved.
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2014 |
Bazaei A, Maroufi M, Mohammadi A, Moheimani SOR, 'Displacement sensing with silicon flexures in MEMS nanopositioners', Journal of Microelectromechanical Systems, 23 502-504 (2014) [C1] We report a novel piezoresistive microelectromechanical system (MEMS) differential displacement sensing technique with a minimal footprint realized through a standard MEMS fabrica... [more] We report a novel piezoresistive microelectromechanical system (MEMS) differential displacement sensing technique with a minimal footprint realized through a standard MEMS fabrication process, whereby no additional doping is required to build the piezoresistors. The design is based on configuring a pair of suspension beams attached to a movable stage so that they experience opposite axial forces when the stage moves. The resulting difference between the beam resistances is transduced into a sensor output voltage using a half-bridge readout circuit and differential amplifier. Compared with a single piezoresistive flexure sensor, the design approximately achieves 2, 22, and 200 times improvement in sensitivity, linearity, and resolution, respectively, with 1.5-nm resolution over a large travel range exceeding 12 ?m. © 2014 IEEE.
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2013 |
Bhikkaji B, Yong YK, Mahmood IA, Moheimani SOR, 'Diagonal control design for atomic force microscope piezoelectric tube nanopositioners', REVIEW OF SCIENTIFIC INSTRUMENTS, 84 (2013) [C1]
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2013 |
Ruppert MG, Moheimani SOR, 'A novel self-sensing technique for tapping-mode atomic force microscopy', Review of Scientific Instruments, 84 (2013) [C1]
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2013 |
Fairbairn M, Moheimani SOR, 'Sensorless enhancement of an atomic force microscope micro-cantilever quality factor using piezoelectric shunt control', Review of Scientific Instruments, 84 (2013) [C1]
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2013 |
Fowler AG, Moheimani SOR, Behrens S, 'Design and Characterization of a 2-DOF MEMS Ultrasonic Energy Harvester With Triangular Electrostatic Electrodes', IEEE Electron Device Letters, 34 1421-1423 (2013) [C1]
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2013 |
Laskovski AN, Yuce MR, Moheimani SOR, 'FM-based piezoelectric strain voltage sensor at ultra-low frequencies with wireless capability', SENSORS AND ACTUATORS A-PHYSICAL, 199 49-55 (2013) [C1]
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2013 |
Aphale SS, Ferreira A, Moheimani SOR, 'A robust loop-shaping approach to fast and accurate nanopositioning', Sensors and Actuators, A: Physical, 204 88-96 (2013) [C1] Inherent nonlinearities as well as their sharp lightly-damped resonant mode severely limit the positioning bandwidth of commercially available piezoelectric stack actuated nanopos... [more] Inherent nonlinearities as well as their sharp lightly-damped resonant mode severely limit the positioning bandwidth of commercially available piezoelectric stack actuated nanopositioners. In this paper, we propose a hybrid control scheme that incorporates a H © 2013 Elsevier B.V. All rights reserved.
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2013 |
Fowler AG, Bazaei A, Moheimani SOR, 'Design and Analysis of Nonuniformly Shaped Heaters for Improved MEMS-Based Electrothermal Displacement Sensing', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 22 687-694 (2013) [C1]
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2013 |
Moheimani SOR, Eleftheriou E, 'Dynamics and control of micro- and nanoscale systems: An introduction to the special issue', IEEE Control Systems, 33 42-45 (2013) [C3] The articles in this special issue of IEEE Control Systems Magazine are selected from the papers presented at the Second Workshop on Dynamics and Control of Micro- and Nanoscale S... [more] The articles in this special issue of IEEE Control Systems Magazine are selected from the papers presented at the Second Workshop on Dynamics and Control of Micro- and Nanoscale Systems, which was held at the University of Newcastle, Australia, in February 2012. A report on the workshop appeared in the December 2012 issue of this magazine [1]. Control is a critical technology for emerging micro- and nanoscale systems. Control at such small scales is difficult. These systems tend to have very fast dynamics, which makes control implementation a challenging task for the control engineer. Often significant uncertainty is associated with the dynamic models of these systems, which can also be nonlinear and time varying. Furthermore, sensing at such small scales is a demanding task, and sensor noise often is a key concern. The problems faced by control engineers at the micro- and nanoscales are therefore among the most challenging in the field. © 2013 IEEE.
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2013 |
Fairbairn MW, Moheimani SOR, 'Control Techniques for Increasing the Scan Speed and Minimizing Image Artifacts in Tapping-Mode Atomic Force Microscopy: Toward Video-Rate Nanoscale Imaging', IEEE Control Systems Magazine, 33 46-67 (2013) [C1]
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2013 |
Yong YK, Bhikkaji B, Moheimani SOR, 'Design, Modeling, and FPAA-Based Control of a High-Speed Atomic Force Microscope Nanopositioner', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 18 1060-1071 (2013) [C1]
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2013 |
Yong YK, Fleming AJ, Moheimani SOR, 'A Novel Piezoelectric Strain Sensor for Simultaneous Damping and Tracking Control of a High-Speed Nanopositioner', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 18 1113-1121 (2013) [C1]
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2013 |
Yong YK, Mohemani SOR, 'Design of an Inertially Counterbalanced Z-Nanopositioner for High-Speed Atomic Force Microscopy', IEEE TRANSACTIONS ON NANOTECHNOLOGY, 12 137-145 (2013) [C1]
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2012 |
Bazaei A, Moheimani SO, 'Signal transformation approach to tracking control with arbitrary references', IEEE Transactions on Automatic Control, 57 2294-2307 (2012) [C1]
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2012 |
Bazaei A, Yong YK, Moheimani SO, 'High-speed Lissajous-scan atomic force microscopy: Scan pattern planning and control design issues', Review of Scientific Instruments, 83 (2012) [C1]
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2012 |
Fairbairn MW, Moheimani SO, 'Resonant control of an atomic force microscope micro-cantilever for active Q control', Review of Scientific Instruments, 83 (2012) [C1]
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2012 |
Yong YK, Moheimani SO, Kenton BJ, Leang KK, 'Invited Review Article: High-speed flexure-guided nanopositioning: Mechanical design and control issues', Review of Scientific Instruments, 83 (2012) [C1]
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2012 |
Mohammadi A, Yuce MR, Moheimani SO, 'A low-flicker-noise MEMS electrothermal displacement sensing technique', IEEE Journal of Microelectromechanical Systems, 21 1279-1281 (2012) [C1]
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2012 |
Fowler AG, Laskovski AN, Hammond AC, Moheimani SO, 'A 2-DOF electrostatically actuated MEMS nanopositioner for on-chip AFM', Journal of Microelectromechanical Systems, 21 771-773 (2012) [C1]
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2012 |
Bazaei A, Yong YK, Moheimani SO, Sebastian A, 'Tracking of triangular references using signal transformation for control of a novel AFM scanner stage', IEEE Transactions on Control Systems Technology, 20 453-464 (2012) [C1]
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2012 |
Cherubini G, Chung CC, Messner WC, Moheimani SO, 'Control methods in data-storage systems', IEEE Transactions on Control Systems Technology, 20 296-322 (2012) [C1]
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2012 |
Bhikkaji B, Moheimani SO, Petersen IR, 'A negative imaginary approach to modeling and control of a collocated structure', IEEE-ASME Transactions on Mechatronics, 17 717-727 (2012) [C1]
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2012 |
Zhu Y, Moheimani SO, Yuce MR, 'Bidirectional electrothermal actuator with Z-shaped beams', IEEE Sensors Journal, 12 2508-2509 (2012) [C1]
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2012 |
Bazaei A, Zhu Y, Moheimani SO, Yuce MR, 'Analysis of nonlinear phenomena in a thermal micro-actuator with a built-in thermal position sensor', IEEE Sensors Journal, 12 1772-1784 (2012) [C1]
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2012 |
Mohammadi A, Yuce MR, Moheimani SO, 'Frequency modulation technique for MEMS resistive sensing', IEEE Sensors Journal, 12 2690-2698 (2012) [C1]
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2012 |
Fairbairn MW, Moheimani SO, 'A switched gain resonant controller to minimize image artifacts in intermittent contact mode atomic force microscopy', IEEE Transactions on Nanotechnology, 11 1126-1134 (2012) [C1]
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2012 |
Wadikhaye S, Yong YK, Moheimani SO, 'Design of a compact serial-kinematic scanner for high-speed atomic force microscopy: An analytical approach', Micro & Nano Letters, 7 309-313 (2012) [C1]
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2011 |
Zhu Y, Moheimani SO, Yuce MR, 'A 2-DOF MEMS Ultrasonic Energy Harvester', IEEE Sensors Journal, 11 155-161 (2011) [C1]
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2011 |
Mahmood IA-T, Moheimani SO, Bhikkaji B, 'A new scanning method for fast atomic force microscopy', IEEE Transactions on Nanotechnology, 10 203-216 (2011) [C1]
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2011 |
Bazaei A, Moheimani SO, Sebastian A, 'An analysis of signal transformation approach to triangular waveform tracking', Automatica, 47 838-847 (2011) [C1]
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2011 |
Laskovski AN, Moheimani SO, Yuce MR, 'Note: Piezoelectric strain voltage sensing at ultra-low frequencies', Review of Scientific Instruments, 82 086113 (2011) [C3]
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2011 |
Zhu Y, Moheimani SO, Yuce MR, 'Simultaneous capacitive and electrothermal position sensing in a micromachined nanopositioner', IEEE Electron Device Letters, 32 1146-1148 (2011) [C1]
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2011 |
Zhu Y, Bazaei A, Moheimani SO, Yuce MR, 'Design, modeling, and control of a micromachined nanopositioner with integrated electrothermal actuation and sensing', Journal of Microelectromechanical Systems, 20 711-719 (2011) [C1]
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2011 |
Fairbairn MW, Moheimani SO, Fleming AJ, 'Q control of an atomic force microscope microcantilever: A sensorless approach', Journal of Microelectromechanical Systems, 20 1372-1381 (2011) [C1]
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2011 |
Pereira E, Aphale SS, Feliu V, Moheimani SO, 'Integral resonant control for vibration damping and precise tip-positioning of a single-link flexible manipulator', IEEE-ASME Transactions on Mechatronics, 16 232-240 (2011) [C1]
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Nova | |||||||||
2010 |
Fleming AJ, Aphale SS, Moheimani SO, 'A new method for robust damping and tracking control of scanning probe microscope positioning stages', IEEE Transactions on Nanotechnology, 9 438-448 (2010) [C1]
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Nova | |||||||||
2010 |
Yong YK, Ahmad BA, Moheimani SO, 'Atomic force microscopy with a 12-electrode piezoelectric tube scanner', Review of Scientific Instruments, 81 10 (2010) [C1]
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Nova | |||||||||
2010 |
Zhu Y, Moheimani SO, Yuce MR, 'Ultrasonic energy transmission and conversion using a 2-D MEMS resonator', IEEE Electron Device Letters, 31 374-376 (2010) [C1]
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Nova | |||||||||
2010 |
Zhu Y, Bazaei A, Moheimani SO, Yuce MR, 'A micromachined nanopositioner with on-chip electrothermal actuation and sensing', IEEE Electron Device Letters, 31 1161-1163 (2010) [C1]
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Nova | |||||||||
2010 |
Gawthrop PJ, Bhikkaji B, Moheimani SO, 'Physical-model-based control of a piezoelectric tube for nano-scale positioning applications', Mechatronics, 20 74-84 (2010) [C1]
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Nova | |||||||||
2010 |
Yong YK, Moheimani SO, Petersen IR, 'High-speed cycloid-scan atomic force microscopy', Nanotechnology, 21 1-4 (2010) [C1]
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Nova | |||||||||
2010 |
Yong YK, Liu K, Moheimani SO, 'Reducing cross-coupling in a compliant XY nanopositioner for fast and accurate raster scanning', IEEE Transactions on Control Systems Technology, 18 1172-1179 (2010) [C1]
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Nova | |||||||||
2009 |
Yong YK, Aphale SS, Moheimani SO, 'Design, identification, and control of a flexure-based XY stage for fast nanoscale positioning', IEEE Transactions on Nanotechnology, 8 46-54 (2009) [C1]
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Nova | |||||||||
2009 |
Mahmood IA-T, Moheimani SO, Liu K, 'Tracking control of a nanopositioner using complementary sensors', IEEE Transactions on Nanotechnology, 8 55-65 (2009) [C1]
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Nova | |||||||||
2009 |
Mahmood IA-T, Moheimani SO, 'Making a commercial atomic force microscope more accurate and faster using positive position feedback control', Review of Scientific Instruments, 80 1-8 (2009) [C1]
|
Nova | |||||||||
2009 |
Sebastian A, Moheimani SO, 'Signal transformation approach to fast nanopositioning', Review of Scientific Instruments, 80 1-3 (2009) [C1]
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Nova | |||||||||
2009 |
Mahmood IA-T, Moheimani SO, 'Fast spiral-scan atomic force microscopy', Nanotechnology, 20 365503 (2009) [C1]
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Nova | |||||||||
2008 |
Bhikkaji B, Moheimani SO, 'Integral resonant control of a piezoelectric tube actuator for fast nanoscale positioning', IEEE/ASME Transactions on Mechatronics, 13 530-537 (2008) [C1]
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Nova | |||||||||
2008 |
Wills AG, Bates DR, Fleming AJ, Ninness BM, Moheimani SO, 'Model predictive control applied to constraint handling in active noise and vibration control', IEEE Transactions on Control Systems Technology, 16 3-12 (2008) [C1]
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Nova | |||||||||
2008 |
Fleming AJ, Wills AG, Moheimani SO, 'Sensor fusion for improved control of piezoelectric tube scanners', IEEE Transactions on Control Systems Technology, 16 1265-1276 (2008) [C1]
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Nova | |||||||||
2008 |
Aphale SS, Bhikkaji B, Moheimani SO, 'Minimizing scanning errors in piezoelectric stack-actuated nanopositioning platforms', IEEE Transactions on Nanotechnology, 7 79-90 (2008) [C1]
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Nova | |||||||||
2008 |
Sebastian A, Pantazi A, Moheimani SO, Pozidis H, Eleftheriou E, 'Achieving subnanometer precision in a MEMS-based storage device during self-servo write process', IEEE Transactions on Nanotechnology, 7 586-595 (2008) [C1]
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Nova | |||||||||
2008 |
Moheimani SO, Yong YK, 'Simultaneous sensing and actuation with a piezoelectric tube scanner', Review of Scientific Instruments, 79 (2008) [C1]
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Nova | |||||||||
2008 |
Moheimani SO, 'Invited Review Article: Accurate and fast nanopositioning with piezoelectric tube scanners: Emerging trends and future challenges', Review of Scientific Instruments, 79 (2008) [C1]
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Nova | |||||||||
2008 |
Clayton GM, Tien S, Fleming AJ, Moheimani SO, Devasia S, 'Inverse-feedforward of charge-controlled piezopositioners', Mechatronics, 18 273-281 (2008) [C1]
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Nova | |||||||||
2008 |
Aphale SS, Devasia S, Moheimani SO, 'High-bandwidth control of a piezoelectric nanopositioning stage in the presence of plant uncertainties', Nanotechnology, 19 1-9 (2008) [C1]
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2008 |
Pereira E, Moheimani SO, Aphale SS, 'Analog implementation of an integral resonant control scheme', Smart Materials & Structures, 17 1-6 (2008) [C1]
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Nova | |||||||||
2007 |
Bhikkaji B, Ratnam MR, Moheimani SO, 'PVPF control of piezoelectric tube scanners', Sensors and Actuators A: Physical, 135 700-712 (2007) [C1]
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2007 |
Aphale SS, Fleming AJ, Moheimani SO, 'High speed nano-scale positioning using a piezoelectric tube actuator with active shunt control', Micro and Nano Letters, 2 9-12 (2007) [C1]
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2007 |
Aphale SS, Fleming AJ, Moheimani SO, 'Integral resonant control of collocated smart structures', Smart Materials & Structures, 16 439-446 (2007) [C1]
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2007 |
Moheimani SO, Goodwin GC, 'Mechatronic systems (Editorial)', Control Engineering Practice, 15 275-276 (2007) [C3]
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2007 |
Lau K, Quevedo DE, Vautier BJG, Goodwin GC, Moheimani SO, 'Design of modulated and demodulated controllers for flexible structures', Control Engineering Practice, 15 377-388 (2007) [C1]
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Nova | |||||||||
2007 |
Fleming AJ, Niederberger D, Moheimani SO, Morari M, 'Control of resonant acoustic sound fields by electrical shunting of a loudspeaker', IEEE Transactions on Control Systems Technology, 15 689-703 (2007) [C1]
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2007 |
Devasia S, Eleftheriou E, Moheimani SO, 'A survey of control issues in nanopositioning', IEEE Transactions on Control Systems Technology, 15 802-823 (2007) [C1]
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2007 |
Bhikkaji B, Ratnam MR, Fleming AJ, Moheimani SO, 'High-performance control of piezoelectric tube scanners', IEEE Transactions on Control Systems Technology, 15 853-866 (2007) [C1]
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2007 |
Moheimani SO, Devasia S, Elefrheriou E, 'Introduction to the special issue on dynamics and control of micro- and nanoscale systems (Editorial)', IEEE Transactions on Control Systems Technology, 15 799-801 (2007) [C3]
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2007 |
Aphale SS, Fleming AJ, Moheimani SO, 'Integral control of collocated smart structures', Proceedings of SPIE, 6525 1-11 (2007) [C1]
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2006 |
Fleming AJ, Moheimani SO, 'Sensorless vibration suppression and scan compensation for piezoelectric tube nanopositioners', IEEE Transactions on Control Systems Technology, 14 33-44 (2006) [C1]
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Nova | |||||||||
2006 |
Moheimani SO, Vautier BJG, Bhikkaji B, 'Experimental implementation of extended Multivariable PPF control on an active structure', IEEE Transactions on Control Systems Technology, 14 443-456 (2006) [C1]
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Nova | |||||||||
2006 |
Fleming AJ, Behrens S, Moheimani SOR, 'Inertial vibration control using a shunted electromagnetic transducer (vol 11, pg 84, 2006)', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 11 367-367 (2006)
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2006 |
Fleming AJ, Moheimani SO, 'Inertial vibration control using a shunted electromagnetic transducer', IEEE-ASME Transactions on Mechatronics, 11 84-92 (2006) [C1]
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2006 |
Niederberger D, Behrens S, Fleming AJ, Moheimani SO, Morari M, 'Adaptive electromagnetic shunt damping', IEEE-ASME Transactions on Mechatronics, 11 103-108 (2006) [C1]
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2005 |
Fleming AJ, Moheimani SOR, 'Sensor-less vibration suppression and scan compensation for piezoelectric tube nanopositioners', 2005 44th IEEE Conference on Decision and Control & European Control Conference, Vols 1-8, 1162-1167 (2005)
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2005 |
Fleming AJ, Moheimani SO, 'Control oriented synthesis of high-performance piezoelectric shunt impedances for structural vibration control', IEEE Transactions on Control Systems Technology, 13 98-112 (2005) [C1]
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2005 |
Moheimani SO, Vautier BJG, 'Resonant control of structural vibration using charge-driven piezoelectric actuators', IEEE Transactions on Control Systems Technology, 13 1021-1035 (2005) [C1]
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2005 |
Fleming AJ, Moheimani SO, Behrens S, 'Synthesis and implementation of sensor-less active shunt controllers for electromagnetically actuated systems', IEEE Transactions on Control Systems Technology, 13 246-261 (2005) [C1]
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2005 |
Moheimani SO, 'Introduction to the focused section on smart materials and structures (editorial)', IEEE-ASME Transactions on Mechatronics, 10 133-134 (2005) [C3]
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2005 |
Behrens S, Fleming AJ, Moheimani SO, 'Passive vibration control via electromagnetic shunt damping', IEEE-Asme Transactions on Mechatronics, 10 118-122 (2005) [C1]
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Nova | |||||||||
2005 |
Fleming AJ, Moheimani SO, 'A grounded-load charge amplifier for reducing hysteresis in piezoelectric tube scanners', Review of Scientific Instruments, 76 (2005) [C1]
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2005 |
Vautier BJG, Moheimani SO, 'Charge driven piezoelectric actuators for structural vibration control: Issues and implementation', Smart Materials and Structures, 14 575-586 (2005) [C1]
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2005 |
Vautier BJG, Moheimani SOR, 'Multivariable lqg vibration control using charge-driven Piezoelectric actuators', IFAC Proceedings Volumes (IFAC-PapersOnline), 16 742-747 (2005) Piezoelectric actuators are known to exhibit hysteresis when driven at relatively large voltages. in most situations this phenomenon is detrimental. Electric charge is known to na... [more] Piezoelectric actuators are known to exhibit hysteresis when driven at relatively large voltages. in most situations this phenomenon is detrimental. Electric charge is known to naturally reduce the effects of hysteresis. The interaction of charge driven piezoceramics with flexible structures is analyzed and reveals that the dynamics of the system are different from the voltage driven case. A procedure for obtaining a charge driven plant model is documented, which can be used with standard control design tools. A multivariable LQG charge controller is designed to reject disturbance vibrations acting on a cantilever beam. Experimental results demonstrating the effectiveness of this method are included. Copyright © 2005 IFAC.
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2005 |
Moheimani R, 'Third I FAC Symposium on Mechatronic Systems', IEEE Control Systems, 25 97-99 (2005)
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2004 |
Moheimani SO, Halim D, 'A convex optimization approach to the mode acceleration problem', Automatica, 889-893 (2004) [C1]
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2004 |
Fleming AJ, Moheimani SOR, 'Optimal impedance design for piezoelectric vibration control', 2004 43RD IEEE CONFERENCE ON DECISION AND CONTROL (CDC), VOLS 1-5, 2596-2601 (2004)
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2004 |
Moheimani SOR, Vautier BJG, 'Resonant control of structural vibration using charge-driven piezoelectric actuators', 2004 43RD IEEE CONFERENCE ON DECISION AND CONTROL (CDC), VOLS 1-5, 5368-5373 (2004)
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2004 |
Moheimani SO, Halim D, 'Reducing the effect of truncation error in spatial and pointwise models of resonant systems with damping', Mechanical Systems and Signal Processing, 291-315 (2004) [C1]
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2004 |
Niederberger D, Fleming AJ, Moheimani SO, Morari M, 'Adaptive multi-mode resonant piezoelectric shunt dampening', Smart Materials and Structures, 1025-1035 (2004) [C1]
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2004 |
Moheimani SO, Fleming AJ, 'Improved current and charge amplifiers for driving piezoelectric loads, and issues in signal processing design for synthesis of shunt damping circuits', Journal of Intelligent Material Systems and Structures, 15 77-92 (2004) [C1]
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2004 |
Moheimani SO, Behrens S, 'Multimode piezoelectric shunt dampening with a highly resonant impedance', IEEE Transactions on Control System Technology, 12 484-491 (2004) [C1]
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2004 |
Moheimani SO, Fleming AJ, Behrens S, 'Dynamics, stability and control of multivariable piezoelectric shunts', IEEE ASME Transactions on Mechatronics, 9 87-99 (2004) [C1]
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2004 |
Moheimani SO, 'Emerging technologies for active noise and vibration control systems', Control Engineering Practice, 987-988 (2004) [C1]
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2003 |
Fleming AJ, Moheimani SO, 'Precision current and charge amplifiers for driving highly capacitive piezoelectric loads', Electronic Letters, 39 282-284 (2003) [C1]
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2003 |
Vautier BJG, Moheimani SO, 'Vibration reduction of resonant structures using charge controlled piezoelectric actuators', Electronics Letters, 39 1036-1038 (2003) [C1]
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2003 |
Behrens S, Moheimani SO, Fleming AJ, 'Multiple mode current flowing passive piezoelectric shunt controller', Journal of Sound and Vibration, 266 929-942 (2003) [C1]
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2003 |
Halim D, Moheimani SO, 'An optimization approach to optimal placement of collocated piezoelectric actuators and sensors on a thin plate', Mechatronics, 13 27-47 (2003) [C1]
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Nova | |||||||||
2003 |
Behrens S, Fleming AJ, Moheimani SO, 'A broadband controller for shunt piezoelectric damping of structural vibration', Smart Materials and Structures, 12 18-28 (2003) [C1]
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2003 |
Fleming AJ, Moheimani SO, 'Adaptive piezoelectric shunt damping', Smart Materials and Structures, 12 36-48 (2003) [C1]
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2003 |
Fleming AJ, Behrens S, Moheimani SO, 'Reducing the inductance requirements of piezolelectric shunt dampening systems', Smart Materials and Structures, 12 57-64 (2003) [C1]
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2003 |
Moheimani SO, Fleming AJ, Behrens S, 'On the feedback structure of wideband piezoelectric shunt damping systems', Smart Materials and Structures, 12 49-56 (2003) [C1]
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2003 |
Moheimani SO, 'A survey of recent innovations in vibration damping and control using shunted piezoelectric transducers', IEEE Transactions on Control Systems Technology, 11 482-494 (2003) [C1]
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2003 |
Fleming AJ, Moheimani SO, 'Spatial system identification of a simply supported beam and a trapezoidal cantilever plate', IEEE Transactions on control systems technology, 11 726-736 (2003) [C1]
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2002 |
Fleming A, Moheimani SOR, 'Spatial system identification of a simply supported beam and a trapezoidal cantilever plate.', PROCEEDINGS OF THE 41ST IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4, 4515-4520 (2002)
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2002 |
Fleming AJ, Behrens S, Moheimani SO, 'Optimization and Implementation of Multimode Piezoelectric Shunt Damping Systems', IEEE/ASME Transactions on Mechatronics, 7 87-94 (2002) [C1]
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Nova | |||||||||
2002 |
Pota HR, Moheimani SO, Smith M, 'Resonant controllers for smart structures', Smart Materials and Structures, 11 1-8 (2002) [C1]
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2002 |
McKelvey T, Fleming AJ, Moheimani SO, 'Subspace based system identification for an acoustic enclosure', Journal of Vibration and Acoustics, 124 1-16 (2002) [C1]
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2002 |
Halim D, Moheimani SO, 'Spatial H2 Control of a Piezoelectric Laminate Beam: Experimental Implementation', IEEE Transactions on Control Systems Technology, 10 533 (2002) [C1]
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Nova | |||||||||
2002 |
Halim D, Moheimani SO, 'Experimental Implementation of Spatial H- Control on a Piezoelectric-Laminate Beam', IEEE/ASME Transactions on Mechatronics, 7 346-356 (2002) [C1]
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2002 |
De Dona JA, Goodwin GC, Moheimani SO, 'Combining switching, over-saturation and scaling to optimise control performance in the presence of model uncertainty and input saturation', Automatica, 38 1153-1162 (2002) [C1]
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2002 |
Moheimani SO, Heath WP, 'Model correction for a class of spatio-temporal systems', Automatica, 38 147-155 (2002) [C1]
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2001 |
Moheimani SO, Fleming AJ, Behrens S, 'Highly resonant controller for multimode piezoelectric shunt damping', Electronic Letters, 37 No 25 1505-1506 (2001) [C1]
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2001 |
Fleming AJ, Behrens S, Moheimani SOR, 'Innovations in piezoelectric shunt damping', SMART STRUCTURES AND DEVICES, 4235 89-101 (2001)
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2001 |
Behrens S, Fleming AJ, Moheimani SOR, 'New method for multiple-mode shunt damping of structural vibration using a single piezoelectric transducer', SMART STRUCTURES AND MATERIALS 2001: DAMPING AND ISOLATION, 4331 239-250 (2001)
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2001 |
Moheimani SO, 'Model Correction for Sampled-Data Models of Structures', Journal of Guidance Control and Dynamics, 24, No. 3 634-637 (2001) [C1]
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2001 |
Moheimani SOR, Goodwin GC, 'Guest editorial - Introduction to the special issue on dynamics and control of smart structures', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 9 3-4 (2001)
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2001 |
Halim D, Moheimani SO, 'Spatial Resonant Control of Flexible Structures - Application to a Piezoelectric Laminate Beam', IEEE Transactions on Control Systems Technology, 9 No. 1 37-53 (2001) [C1]
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2001 |
Moheimani SO, Goodwin GC, 'Introduction to the Special Issue on Dynamics and Control Smart Structures', IEEE Transactions on Control Systems Technology, Vol 9, No. 1 3 & 4 (2001) [C3]
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2000 | Moheimani SO, 'Minimizing the effect of out-of-bandwith dynamics in the models of reverberant systems that arise in modal analysis: implications on spatial H Control', Automatica, 36 1023-1031 (2000) [C1] | ||||||||||
2000 |
Fleming AJ, Behrens S, Moheimani SO, 'Synthetic impedance for implementation of piezoelectric shunt-damping circuits', Electronics Letters, 36, no 18 1525-1526 (2000) [C1]
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2000 |
Moheimani SO, Savkin AV, Petersen IR, 'Synthesis of minimax optimal controllers for uncertain time-delay systems with structured uncertainty', International Journal of Systems Science, 31, No 2 137-147 (2000) [C1]
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2000 |
Moheimani SO, 'Minimizing the Effect of Out of Bandwith Modes in Truncated Structure Models', Journal of Dynamic Systems, Measurement, and Control, 122 237-239 (2000) [C1]
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2000 |
Moheimani SOR, Heath WP, 'Model correction for a class of spatio-temporal systems', PROCEEDINGS OF THE 2000 AMERICAN CONTROL CONFERENCE, VOLS 1-6, 3768-3772 (2000)
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2000 |
Reza Moheimani SO, Clark RL, 'Minimizing the truncation error in assumed modes models of structures', Journal of Vibration and Acoustics, Transactions of the ASME, 122 330-335 (2000) The assumed modes approach is a widely used technique in modeling of distributed systems. Such models often consist of a large number of modes. For controller design purposes thes... [more] The assumed modes approach is a widely used technique in modeling of distributed systems. Such models often consist of a large number of modes. For controller design purposes these models are simplified by truncating the modes that lie out of the bandwidth of interest. Truncation can alter zeros of the system. This paper presents a method of minimizing the truncation error by adding a second order term to the truncated model. This extra term is determined such that the in-bandwidth error is minimized in an optimal H2 sense. The technique is extended to multivariable systems. © 2000 by ASME.
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2000 |
Moheimani SO, 'Experimental Verification of the Corrected Transfer Funtion of a Piezoelectric Laminate Beam', IEEE Transactions on Control Systems Technology, 8, No 4 660-666 (2000) [C1]
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2000 |
McKelvey T, Fleming A, Moheimani SOR, 'Subspace based system identification for an acoustic enclosure', PROCEEDINGS OF THE 2000 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS, 255-260 (2000)
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1999 |
Moheimani SO, Pota HR, Petersen IR, 'Spatial Balanced Model Reduction for Flexible Structures', Automatica, Vol 35 269-277 (1999) [C1]
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1999 |
Moheimani SO, Petersen IR, Pota HR, 'Broadband Disturbance Attenuation over an Entire Beam', Journal of Sound and Vibration, 227 No. 4 807-832 (1999) [C1]
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1999 |
Savkin AV, Petersen IR, Moheimani SO, 'Model Validation and State Estimation for Uncertain Continuous-Time Systems with Missing Discrete-Continuous Time Data', Computers and Electrical Engineering, 25, No. 1 29-43 (1999) [C1]
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1999 |
De Dona JA, Moheimani SO, Goodwin GC, Feuer A, 'Robust Hybrid Control Incorporating Over-Saturation', Systems & Control Letters, 38 179-185 (1999) [C1]
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1999 |
Reza Moheimani SO, 'Minimizing the effect of out of bandwidth dynamics in the models of reverberant systems that arise in modal analysis: implications on spatial H8 control', Proceedings of the IEEE Conference on Decision and Control, 2 1089-1094 (1999) The assumed modes modelling of structures and acoustic systems results in infinite-dimensional models. For control design purposes, these models are simplified by removing higher ... [more] The assumed modes modelling of structures and acoustic systems results in infinite-dimensional models. For control design purposes, these models are simplified by removing higher frequency modes which lie out of the bandwidth of interest. Truncation can considerably perturb the zeros of the truncated model. This paper suggests a method of minimizing the effect of removed higher order modes on the spatial low-frequency dynamics of the truncated model by adding a spatial zero frequency term to the low order model of the system. The paper also studies implications of this approach on Spatial H8 Control of reverberant systems.
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1999 |
Moheimani SOR, 'Experimental verification of the reduced order transfer function of a piezoelectric laminate beam', Proceedings of the IEEE Conference on Decision and Control, 3 2587-2592 (1999) Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modelling technique for piezoelectric laminates is the assumed... [more] Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modelling technique for piezoelectric laminates is the assumed modes method which results in an infinite-dimensional model of the composite structure. For control design purposes, such a model is simplified by removing higher frequency modes which lie out of the bandwidth of interest. Truncation can considerably perturb the in-band zeros of the truncated model. This paper suggests a method of minimizing the effect of the removed higher order modes on the low frequency dynamics of the truncated model of a piezoelectric laminated beam by adding a zero frequency term to the low order model of the laminate. Simulations and experimental results are presented.
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1999 | Esfahani SH, Moheimani SO, Petersen IR, 'An LMI Approach to Sub-Optimal Guaranteed Cost Control for Uncertain Time-Delay Systems', IEE Proceedings - Control Theory and Applications, 145, No. 6 491-498 (1999) [C1] | ||||||||||
1998 |
Esfahani SH, Moheimani SOR, Petersen IR, 'LMI approach to suboptimal guaranteed cost control for uncertain time-delay systems', IEE PROCEEDINGS-CONTROL THEORY AND APPLICATIONS, 145 491-498 (1998)
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1998 |
Moheimani SO, Petersen IR, 'Guaranteed cost control of uncertain systems with a time-multiplied quadratic cost function: an approach based on linear matrix inequalities', Automatica, 34 654-654 (1998) [C1]
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1998 |
Moheimani SO, Savkin V, Petersen IR, 'Robust filtering, prediction, smoothing, and observability of uncertain systems', IEEE Transactions on Circuits and Systems - 1: Fundamental Theory and Applications., 45, No 4 446-457 (1998) [C1]
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Show 198 more journal articles |
Conference (218 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2020 |
Mandavi M, Coskun MB, Nasrabadi HM, Moheimani SOR, 'A HIGH DYNAMIC RANGE AFM PROBE WITH COLLOCATED PIEZOELECTRIC TRANSDUCER PAIRS', 2020 33RD IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS 2020), CANADA, Vancouver (2020)
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2019 |
Maroufi M, Alipour A, Alemansour H, Moheimani SOR, 'Design and Characterization of a MEMS Probe Scanner for On-chip Atomic Force Microscopy', PROCEEDINGS OF 2019 4TH INTERNATIONAL CONFERENCE ON MANIPULATION, AUTOMATION AND ROBOTICS AT SMALL SCALES (MARSS 2019), FINLAND, Helsinki (2019)
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2019 |
Nikooienejad N, Maroufi M, Moheimani SOR, 'Characterization of a Tilted-beam Piezoresistive MEMS Sensor with Current-drive Readout Circuit', 2019 AMERICAN CONTROL CONFERENCE (ACC), PA, Philadelphia (2019)
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2018 |
Nikooienejad N, Alipour A, Maroufi M, Moheimani SOR, 'Sequential Cycloid Scanning for Time-resolved Atomic Force Microscopy', 2018 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS (AIM), Auckland, NEW ZEALAND (2018) [E1]
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2017 |
Tajaddodianfar F, Moheimani SOR, Owen J, Randall JN, 'A Self-tuning Controller for High-Performance Scanning Tunneling Microscopy', 2017 IEEE CONFERENCE ON CONTROL TECHNOLOGY AND APPLICATIONS (CCTA 2017), HI (2017) [E1]
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2017 |
Fowler AG, Coskun MB, Moheimani SOR, 'Q Control of a Microfabricated Piezoelectric Cantilever with On-Chip Feedthrough Cancellation', 2017 IEEE CONFERENCE ON CONTROL TECHNOLOGY AND APPLICATIONS (CCTA 2017), HI (2017) [E1]
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2017 |
Maroufi M, Alemansour H, Moheimani SOR, 'A Closed-loop MEMS Force Sensor with Adjustable Stiffness', 2017 IEEE CONFERENCE ON CONTROL TECHNOLOGY AND APPLICATIONS (CCTA 2017), HI (2017) [E1]
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2017 |
Ruppert MG, Harcombe DM, Ragazzon MRP, Moheimani SOR, Fleming AJ, 'Frequency domain analysis of robust demodulators for high-speed atomic force microscopy', Proceedings of the 2017 American Control Conference, Seattle, USA (2017) [E1]
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Nova | |||||||||
2017 |
Tajaddodianfar F, Moheimani SOR, Fuchs E, Randall JN, 'Stability Analysis of A Scanning Tunneling Microscope Control System', 2017 AMERICAN CONTROL CONFERENCE (ACC), Seattle, WA (2017) [E1]
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2017 |
Bazaei A, Maroufi M, Moheimani SOR, 'Tracking of Constant-Linear-Velocity Spiral Trajectories by Approximate Internal Model Control', 2017 IEEE CONFERENCE ON CONTROL TECHNOLOGY AND APPLICATIONS (CCTA 2017), HI (2017) [E1]
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Nova | |||||||||
2017 |
Maroufi M, Ruppert MG, Fowler AG, Moheimani SOR, 'Design and control of a single-chip SOI-MEMS atomic force microscope', Proceedings of the 2017 American Control Conference, Seattle, USA (2017) [E1]
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Nova | |||||||||
2017 |
Ruppert MG, Maroufi M, Bazaei A, Moheimani SOR, 'Kalman Filter Enabled High-Speed Control of a MEMS Nanopositioner', IFAC PAPERSONLINE, Toulouse, FRANCE (2017) [E1]
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2017 |
Moore SI, Yong YK, Moheimani SOR, 'Switched Self-Sensing Actuator for a MEMS Nanopositioner', 2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS (ICM), Federat Univ Gippsland, Gippsland, AUSTRALIA (2017) [E1]
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2017 |
Maroufi M, Moheimani SOR, 'Characterization of piezoresistive and electrothermal sensors in MEMS devices', Proceedings of IEEE Sensors, Orlando (2017) [E1]
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2017 |
Bazaei A, Maroufi M, Moheimani SOR, 'Tracking Control of Constant-Linear-Velocity Spiral Reference by LQG Method', IFAC PAPERSONLINE, FRANCE, Toulouse (2017) [E1]
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2016 |
Moore SI, Moheimani SOR, 'A switched actuation and sensing method for a MEMS electrostatic drive', Proceedings of the 2016 American Control Conference, Boston, MA (2016) [E1]
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2016 |
Maroufi M, Moheimani SOR, 'CROSS COUPLING IN PARALLEL KINEMATIC MEMS NANOPOSITIONERS', PROCEEDINGS OF THE ASME 8TH ANNUAL DYNAMIC SYSTEMS AND CONTROL CONFERENCE, 2015, VOL 3, Columbus, OH (2016) [E1]
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2016 |
Ruppert MG, Harcombe DM, Reza Moheimani SO, 'State estimation for high-speed multifrequency atomic force microscopy', Proceedings of the 2016 American Control Conference, Boston, MA (2016) [E1]
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2016 |
Ruppert MG, Moheimani SOR, 'MULTI-MODE Q CONTROL IN MULTIFREQUENCY ATOMIC FORCE MICROSCOPY', INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 4, Boston, MA (2016) [E1]
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2016 |
Findeisen R, Grover MA, Wagner C, Maiworm M, Temirov R, Tautz FS, et al., 'Control on a molecular scale: A perspective', Proceedings of the American Control Conference, Boston (2016) [E1]
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2015 |
Bazaei A, Yong YK, Moheimani SOR, 'Internal model control for high-speed spiral scan AFM', 2015 Australian Control Conference, AUCC 2015 (2015) [E1] We report on a novel application of internal model control for accurate tracking of a high speed spiral trajectory in scanning probe microscopy. With a closed-loop bandwidth of on... [more] We report on a novel application of internal model control for accurate tracking of a high speed spiral trajectory in scanning probe microscopy. With a closed-loop bandwidth of only 1 kHz, we achieved tracking errors as low as 0.31% of the scan diameter and an ultra-video frame rate of 37.5 frames per second (FPS) for a high pitch spiral trajectory generated by amplitude modulation of 3 kHz sinusoids.
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2015 |
Fowler AG, Moheimani SOR, '4-DOF SOI-MEMS ultrasonic energy harvester', IEEE-NANO 2015 - 15th International Conference on Nanotechnology (2015) [E1] A silicon-on-insulator microelectromechanical systems (MEMS)-based energy harvester potentially suitable for applications such as implanted biomedical systems is presented. Design... [more] A silicon-on-insulator microelectromechanical systems (MEMS)-based energy harvester potentially suitable for applications such as implanted biomedical systems is presented. Designed to be mechanically excited by an external source of ultrasonic waves, the harvester features a novel 4-degree-of-freedom resonant mechanism that allows the device to generate electrical energy in any orientation. Experimental testing of the fabricated harvester shows that the device is able to generate 50.9nW, 60.6nW, and 14.3nW of electrical power when excited by ultrasonic waves directed from the x, y, and z directions, respectively.
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2015 |
Petersen I, Moheimani R, 'Welcome to ISIC 2015 from the general and program chairs', IEEE International Symposium on Intelligent Control - Proceedings (2015)
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2015 |
Yong YK, Moheimani SOR, 'Control of vertical axis of a video-speed AFM nanopositioner', Proceedings of the American Control Conference (2015) [E1] This paper presents the combination of active and passive damping control techniques to increase the vertical tracking bandwidth of a fast nanopositioner for video-speed atomic fo... [more] This paper presents the combination of active and passive damping control techniques to increase the vertical tracking bandwidth of a fast nanopositioner for video-speed atomic force microscopy (AFM). The passive damping technique utilizes an inertial counterbalance arrangement to mechanically cancel the low 20-kHz vertical resonant mode of the nanopositioner; and the active control technique employs an integral resonant control technique to augment damping to resonant modes at 60 kHz and above. The combined damping techniques increases the vertical tracking bandwidth from 2.3 kHz to 28.1 kHz. This allow high-quality AFM images to be recorded at video speed, i.e. up to 1000 Hz line rate without noticeable image artifacts.
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2015 |
Bazaei A, Maroufi M, Moheimani SOR, 'Noise resilient 2-DoF washout tracking controller for nanopositioning systems subject to sensor drift', Proceedings of the American Control Conference (2015) [E1] We propose a two-degree-of-freedom washout control structure for tracking of sinusoidal references in lightly damped structures subject to sensor drift and measurement noise. An a... [more] We propose a two-degree-of-freedom washout control structure for tracking of sinusoidal references in lightly damped structures subject to sensor drift and measurement noise. An algorithm is derived, assigning stable parameter intervals to a second-order washout damping compensator for a resonant plant with a single dominant mode. Simulation results demonstrate quality drift and noise rejection performance of the proposed method, when tracking a 3 kHz sinusoidal reference in a nanopositioning stage with a 4.5 kHz resonance frequency. Experiments are conducted, validating high efficacy of the proposed washout tracking control strategy.
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2015 |
Bazaei A, Fowler AG, Maroufi M, Moheimani SOR, 'Tracking of spiral trajectories beyond scanner resonance frequency by a MEMS nanopositioner', 2015 IEEE Conference on Control and Applications, CCA 2015 - Proceedings (2015) [E1] This paper presents a novel application of internal model control (IMC) for high-precision tracking of spiral reference signals generated by single-tone sine waves. In contrast to... [more] This paper presents a novel application of internal model control (IMC) for high-precision tracking of spiral reference signals generated by single-tone sine waves. In contrast to the existing spiral tracking control methods, the IMC approach provides zero steady-state tracking error for linear-time-invariant plants. An application of the proposed method is demonstrated with a two-axis microelectromechanical system (MEMS) stage that has a dominant resonance frequency of 1.3 kHz. Using a reference sinusoidal frequency of 1.4 kHz, the stage can scan a 16 µm-diameter area within 55ms with a root-mean-squared (rms) tracking error of 20nm.
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2015 |
Petersen I, Moheimani R, 'Welcome to CCA 2015 from the General and Program Chairs', 2015 IEEE Conference on Control and Applications, CCA 2015 - Proceedings (2015)
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2015 |
Maroufi M, Yong YK, Moheimani SOR, IEEE, 'Design and Control of a MEMS Nanopositioner with Bulk Piezoresistive Sensors', 2015 IEEE CONFERENCE ON CONTROL AND APPLICATIONS (CCA 2015) (2015) [E1]
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2014 |
Karvinen KS, Moheimani SOR, 'The control of higher modes in atomic force microscopy', Proceedings of the 2014 International Conference on Nanoscience and Nanotechnology, ICONN 2014 (2014) [E3] Strong nonlinear interactions between the cantilever tip and sample may result in coupling of the cantilever modes, which may result in image artefacts. Such observations have bee... [more] Strong nonlinear interactions between the cantilever tip and sample may result in coupling of the cantilever modes, which may result in image artefacts. Such observations have been made in liquid AFM [1] and contact mode AFM [2, 3]. There are currently very few solutions to address this problem. While the displacement sensor can be calibrated to ignore contributions from the higher modes, this approach lacks robustness [4]. To mitigate these effects, we propose the application of modulated-demodulated control to suppress the higher modes. The modulated-demodulated control technique is advantageous as it reduces the bandwidth requirements of the baseband controller, simplifying the implementation of high-bandwidth controllers [5].
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2014 |
Coskun MB, Moore S, Moheimani SOR, Neild A, Alan T, 'Force-compensating MEMS sensor for AFM cantilever stiffness calibration', Proceedings of IEEE Sensors (2014) We have developed a force compensating MEMS sensor along with corresponding feedback control circuitry to characterize samples with a wide range of mechanical stiffnesses without ... [more] We have developed a force compensating MEMS sensor along with corresponding feedback control circuitry to characterize samples with a wide range of mechanical stiffnesses without loss of accuracy. The device consists of a movable shuttle supported by slender flexures, integrated thermal displacement sensors and comb-drive actuators controlled with a customized circuitry. The operation principle is simple but subtle: as the device applies loads on a sample, any shuttle displacement which would typically be incurred in conventional systems, is immediately nullified through an electrostatic force generated by the combs. The system allows the forces to be transduced directly. And, more importantly, thanks to the control algorithm, the range and precision of the applied forces become independent of both the mechanical device parameters and sample compliance. Hence, the number of necessary calibration steps is reduced significantly whilst the measurement range is substantially increased.
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2014 |
Bazaei A, Mohammadi A, Reza Moheimani SO, 'Sensing bandwidth of electrothermal MEMS transducers in constant voltage and current modes', 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Besancon, France (2014) [E1]
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2014 |
Bazaei A, Maroufi M, Mohammadi A, Reza Moheimani SO, 'Development of a MEMS position transducer using bulk piezoresistivity of suspensions', 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics AIM, Besancon, France (2014) [E1]
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2014 |
Moore SI, Moheimani SOR, 'Self-sensing electrostatic drive in a MEMS nanopositioner for the application of vibration control', 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Besancon, France (2014) [E1]
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2014 |
Mohammadi A, Moheimani SOR, Yuce MR, 'SNR improvement in MEMS electrothermal displacement sensors', 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Besancon, France (2014) [E1]
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2014 |
Wadikhaye SP, Yong YK, Moheimani SOR, 'Design and characterisation of a serial-kinematic nanopositioner for high-speed AFM', IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Besancon, France (2014) [E1]
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2014 |
Sanjeevini S, Bhikkaji B, Moheimani SOR, 'Stability analysis of switched systems with 'mixed'-negative imaginary property', IFAC Proceedings Volumes (IFAC-PapersOnline) (2014) [E1] This paper discusses the stability of feedback systems in which both plant and controller are switched. Switched systems considered here have all their subsystems satisfying the &... [more] This paper discusses the stability of feedback systems in which both plant and controller are switched. Switched systems considered here have all their subsystems satisfying the 'mixed'-negative imaginary property. A definition for dissipativity (for switched systems) is proposed, and dissipative switched systems are shown to be stable (under certain conditions). Switched systems with 'mixed'-negative imaginary property are shown to be dissipative and conditions for stability are derived. As an illustration of the results, a switched controller is designed for a nanopositioning stage, which has a 'mixed'-negative imaginary frequency response function. Simulations show that the closed loop is stable and the designed controller damps the resonances satisfactorily.
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2014 |
Fairbairn MW, Wadikhaye SP, Moheimani SOR, 'Sensorless damping control of a high speed flexure guided nanopositioner', IFAC Proceedings Volumes (IFAC-PapersOnline) (2014) [E1] The scan speed of the Atomic Force Microscope (AFM) is limited by the highly resonant nature of the nanopositioner which scans the sample relative to the probe tip. Feedback contr... [more] The scan speed of the Atomic Force Microscope (AFM) is limited by the highly resonant nature of the nanopositioner which scans the sample relative to the probe tip. Feedback control may be used to dampen the resonance; however this requires external displacement sensors which may introduce high frequency noise into the feedback loop. In this work an active piezoelectric shunt control system, which requires no external feedback sensors, is designed to damp the resonance of a high speed flexure guided nanopositioner. The shunt impedance is designed in such a way that the closed loop transfer function from applied voltage to actuator displacement is equivalent to that of a displacement feedback system using a Positive Position Feedback (PPF) controller. This impedance design is an improvement over a passive impedance in that higher damping of the resonance is achievable. AFM images of a test sample were obtained to demonstrate the reduction of image artifacts when this control technique is applied.
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2014 |
Ruppert MG, Moheimani SOR, 'Novel reciprocal self-sensing techniques for tapping-mode atomic force microscopy', IFAC Proceedings Volumes (IFAC-PapersOnline) (2014) [E1] We evaluate two novel reciprocal self-sensing methods for tapping-mode atomic force microscopy (TM-AFM) utilizing charge measurement and charge actuation, respectively. A microcan... [more] We evaluate two novel reciprocal self-sensing methods for tapping-mode atomic force microscopy (TM-AFM) utilizing charge measurement and charge actuation, respectively. A microcantilever, which can be batch fabricated through a standard microelectromechanical system (MEMS) process, is coated with a single piezoelectric layer and simultaneously used for actuation and deflection sensing. The setup enables the elimination of the optical beam deflection technique which is commonly used to measure the cantilever oscillation amplitude. The voltage to charge and charge to voltage transfer functions reveal a high amount of capacitive feedthrough which degrades the dynamic range of the sensors significantly. A feedforward control technique is employed to cancel the feedthrough and increase the dynamic range from less than 1dB to approximately 30 dB. Experiments show that the conditioned self-sensing schemes achieve an excellent signal-to-noise ratio and can therefore be used to provide the feedback signal for TM-AFM imaging.
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2014 |
Moore SI, Moheimani SOR, 'Simultaneous actuation and sensing for electrostatic drives in MEMS using frequency modulated capacitive sensing', IFAC Proceedings Volumes (IFAC-PapersOnline) (2014) [E1] This paper presents a displacement sensing technique that can be integrated into a microfabricated microelectromechanical system (MEMS) device. This sensor determines displacement... [more] This paper presents a displacement sensing technique that can be integrated into a microfabricated microelectromechanical system (MEMS) device. This sensor determines displacement by measuring the capacitance of a MEMS electrostatic drive, as the capacitance is a function of the displacement. The electrostatic drive is incorporated into an LC oscillator whose frequency varies with the capacitance. A lock-in amplifier is used to extract the frequency signal. The sensitivity of the sensor was -1.153 V µm-1 and exhibited no dynamics up to the 1.2 kHz bandwidth of the MEMS device it was implemented in. The electrostatic drive in this technique is used for both actuation and sensing. This effectively increases the transduction efficiency of both the actuator and sensor as more space on the die can be dedicated to the one drive. Additionally, the scheme allows for one terminal of the drive to be grounded. Thus, this scheme can be used on MEMS devices with more than one drive connected to a common mechanical structure which is electrically grounded.
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2014 |
Fowler AG, Maroufi M, Bazaei A, Moheimani SOR, 'MEMS Nanopositioner for Lissajous-Scan Atomic Force Microscopy', ASME Proceedings: Dynamic Systems and Control Conference, San Antonio, Texas (2014) [E1]
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2013 |
Fowler AG, Moheimani SOR, Behrens S, 'A MEMS electromagnetic energy harvester using ultrasonic excitation', 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: AIM 2013, Wollongong (2013) [E1]
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2013 |
Moore SI, Moheimani SOR, 'MEMS Based Oscillator Incorporating A Displacement Sensor', 3rd Australian Control Conference (AUCC), Perth, AUSTRALIA (2013) [E1]
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2013 |
Ruppert MG, Fairbairn MW, Moheimani SOR, 'Multi-Mode Resonant Control of a Microcantilever for Atomic Force Microscopy', 2013 IEEE/ASME International Conference On Advanced Intelligent Mechatronics (AIM): Mechatronics For Human Wellbeing, Wollongong, Australia (2013) [E1]
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2013 |
Wadikhaye SP, Yong YK, Moheimani SOR, 'Nanopositioner Design using Tapered Flexures: A Parametric Study', 2013 IEEE/ASME International Conference On Advanced Intelligent Mechatronics (AIM): Mechatronics For Human Wellbeing, Wollongong, Australia (2013) [E1]
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2013 |
Maroufi M, Moheimani SOR, 'Design, Fabrication and Characterization of a High-Bandwidth 2DOF MEMS Nanopositioner', 2013 IEEE/ASME International Conference On Advanced Intelligent Mechatronics (AIM): Mechatronics For Human Wellbeing, Wollongong, AUSTRALIA (2013) [E1]
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2013 |
Piriyanont B, Moheimani SOR, 'Design, Modeling, and Characterization of a MEMS Micro-gripper with an Integrated Electrothermal Force Sensor', 2013 IEEE/ASME International Conference On Advanced Intelligent Mechatronics (Aim): Mechatronics For Human Wellbeing, Wollongong, Australia (2013) [E1]
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2013 |
Bazaei A, Moheimani SOR, 'Realization of a class of compensators by modulated-demodulated structures with application in tracking of biased sinusoids', Proceedings of the American Control Conference, Washington, DC (2013) [E1]
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2013 |
Fairbairn MW, Moheimani SOR, 'A new approach to active Q control of an atomic force microscope micro-cantilever operating in tapping mode', Proceedings of the 6th IFAC Symposium on Mechatronic Systems, Hangzhou, China (2013) [E1]
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2013 |
Karvinen KS, Moheimani SOR, 'Modulated-demodulated Q control of an atomic force microscope microcantilever', Proceedings of the 6th IFAC Symposium on Mechatronic Systems, Hangzhou, China (2013) [E1]
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2013 |
Moore S, Moheimani SOR, 'MEMS resonator with displacement sensor based on electro-thermal principles', Proceedings of the 6th IFAC Symposium on Mechatronic Systems, Hangzhou, China (2013) [E1]
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2013 |
Fowler AG, Moheimani SOR, Rakotondrabe M, 'Closed-loop control of a novel 2-DOF MEMS nanopositioner with electrothermal actuation', Proceedings of the 6th IFAC Symposium on Mechatronic Systems, Zhejiang University, Hangzhou, China (2013) [E1]
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2013 |
Yong YK, Fowler AG, Mohammadi A, Moheimani SOR, 'Control of a MEMS nanopositioner for atomic force microscopy', Proceedings of the 6th IFAC Symposium on Mechatronic Systems, 2013, Hangzhou, China (2013) [E1]
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2013 |
Bazaei A, Fowler AG, Moheimani SOR, 'Nonlinear Analysis of Electrothermal Position Sensors with Contoured Heaters', 2013 IEEE SENSORS, Baltimore, MD (2013) [E2]
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2013 |
Karvinen KS, Moheimani SOR, 'Analysis and Application of Modulated-Demodulated Control', 2013 3rd Australian Control Conference (AUCC), Perth, AUSTRALIA (2013) [E1]
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2013 |
Fairbairn MW, Mueller P, Moheimani SOR, 'Active Piezoelectric Shunt Control of an Atomic Force Microscope Micro-Cantilever', 2013 3rd Australian Control Conference (AUCC), Perth, Australia (2013) [E1]
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2013 |
Fowler AG, Moheimani SOR, Behrens S, 'A 3-DOF SOI MEMS ultrasonic energy harvester for implanted devices', Journal of Physics: Conference Series, Imperial Coll London, London, ENGLAND (2013) [E1]
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2013 |
Piriyanont B, Moheimani SOR, Bazaei A, 'Design and Control of a MEMS Micro-gripper with Integrated Electro-thermal Force Sensor', 2013 3rd Australian Control Conference (AUCC), Perth, Australia (2013) [E1]
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2013 |
Yong YK, Bazaei A, Moheimani SOR, 'Control of a High-Speed Nanopositioner for Lissajous-scan Video-rate AFM', 2013 3rd Australian Control Conference (AUCC), Perth, AUSTRALIA (2013) [E1]
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2012 |
Bazaei A, Fowler AG, Moheimani SO, 'Improved electrothermal position sensing in MEMS with non-uniformly shaped heaters', 11th IEEE Sensors 2012. Proceedings, Taipei, Taiwan (2012) [E1]
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2012 |
Fowler AG, Moheimani SO, Behrens S, 'A 3-DoF MEMS ultrasonic energy harvester', 11th IEEE Sensors 2012. Proceedings, Taipei, Taiwan (2012) [E1]
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2012 |
Rakotondrabe M, Fowler AG, Moheimani SO, 'Characterization of a 2-DoF MEMS nanopositioner with integrated electrothermal actuation and sensing', 11th IEEE Sensors 2012. Proceedings, Taipei, Taiwan (2012) [E1]
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2012 |
Laskovski AN, Yuce MR, Moheimani SO, 'Ultra low frequency FM sensing of piezoelectric strain voltage', 11th IEEE Sensors 2012. Proceedings, Taipei, Taiwan (2012) [E1]
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2012 | Mohammadi A, Yuce MR, Moheimani SO, 'A readout circuit implementation to reduce the flicker noise in MEMS electrothermal sensors', 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012, Seville, Spain (2012) [E1] | Nova | |||||||||
2012 |
Yong YK, Moheimani SO, 'A Z-scanner design for high-speed scanning probe microscopy', 2012 IEEE International Conference on Robotics and Automation, Saint Paul, MN (2012) [E1]
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2012 |
Wadikhaye S, Bhikkaji B, Moheimani SO, Yong YK, 'Analog implementation of a damping and tracking controller for a high-speed X-Y nanopositioner', 2012 American Control Conference, Montreal, Canada (2012) [E1]
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2012 | Fairbairn MW, Moheimani SO, 'Minimizing probe loss in tapping mode atomic force microscopy using a switched gain resonant controller', Australian Control Conference Proceedings 2012, Sydney, Australia (2012) [E1] | Nova | |||||||||
2012 |
Bazaei A, Moheimani SO, 'Improving transient performance of signal transformation approach', Proceedings of the 51st IEEE Conference on Decision and Control, Hawaii, USA (2012) [E1]
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2012 |
Moheimani R, Eleftheriou E, 'Second workshop on dynamics and control of micro- and nanoscale systems', IEEE Control Systems (2012) The authors briefly describe the events of the Second Workshop on Dynamics and Control of Micro- and Nanoscale Systems was held at the University of Newcastle, Australia, February... [more] The authors briefly describe the events of the Second Workshop on Dynamics and Control of Micro- and Nanoscale Systems was held at the University of Newcastle, Australia, February 23-24, 2012. The purpose of this workshop was to bring together some of the leading experts in the field of dynamics and control of micro- and nanoscale systems to discuss emerging research problems and recent advances in the field. The two-day program comprised two keynote speeches and 17 invited presentations. © 1991-2012 IEEE.
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2012 |
Fairbairn MW, Moheimani SO, 'Quality factor enhancement of an atomic force microscope micro-cantilever using piezoelectric shunt control', 2012 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) Proceedings, Kaohsiung, Taiwan (2012) [E1]
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2012 |
Yong YK, Bazaei A, Moheimani SO, Allgower F, 'Design and control of a novel non-raster scan pattern for fast scanning probe microscopy', 2012 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) Proceedings, Kaohsiung, Taiwan (2012) [E1]
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2011 |
Fairbairn MW, Moheimani SO, Fleming AJ, 'Passive piezoelectric shunt control of an atomic force microscope microcantilever', 2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics: AIM2011, Budapest (2011) [E1]
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2011 |
Yong YK, Moheimani SO, Petersen I, 'A non-raster scan method for high-speed SPM', 2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Budapest, Hungary (2011) [E3]
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2011 |
Yong YK, Fleming AJ, Moheimani SO, 'Vibration and tracking control of a flexure-guided nanopositioner using a Piezoelectric strain sensor', First International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-Nano 2011), Changchun, China (2011) [E2]
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2011 |
Fairbairn MW, Moheimani SO, Fleming AJ, 'Improving the scan rate and image quality in tapping mode atomic force microscopy with piezoelectric shunt control', Proceedings of the 2011 Australian Control Conference, AUCC 2011, Melbourne, Vic (2011) [E1]
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2011 |
Zhu Y, Bazaei A, Moheimani SO, Yuce MR, 'Design, prototyping, modeling and control of a MEMS nanopositioning stage', 2011 American Control Conference, San Francisco, CA (2011) [E1]
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2011 |
Yong YK, Bhikkaji B, Moheimani SO, 'Analog control of a high-speed atomic force microscope scanner', 2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM2011), Budapest, Hungary (2011) [E1]
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2011 |
Wadikhaye S, Yong YK, Moheimani SO, 'A novel serial-kinematic AFM scanner: Design and characterization', Proceedings IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society, Melbourne, Australia (2011) [E1]
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2011 |
Mohammadi A, Yuce MR, Moheimani SO, 'Dealing with 1/f Noise in MEMS electrothermal sensing', Proceedings. IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society, Melbourne, Vic (2011) [E1]
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2011 |
Bhikkaji B, Yong YK, Mahmood IA-T, Moheimani SO, 'Multivariable control designs for Piezoelectric tubes', Proceedings of the 18th IFAC World Congress, 2011, Milano, Italy (2011) [E1]
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2010 |
Mahmood IA-T, Moheimani SO, 'Spiral-scan atomic force microscopy: A constant linear velocity approach', Proceedings of the 10th IEEE International Conference on Nanotechnology, Seoul, Korea (2010) [E2]
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2010 |
Yong YK, Ahmed B, Moheimani SO, 'A 12-electrode piezoelectric tube scanner for fast atomic force microscopy', 2010 American Control Conference, ACC 2010, Baltimore, MD (2010) [E1]
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2010 |
Mahmood IA-T, Moheimani SO, 'Spiral scanning: An alternative to conventional raster scanning in high-speed scanning probe microscopes', 2010 American Control Conference, ACC 2010, Baltimore, MD (2010) [E1]
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2010 |
Bazaei A, Moheimani SO, Sebastian A, 'Stability of signal transformation method for triangular waveform tracking', 2010 49th IEEE Conference on Decision and Control, CDC 2010, Atlantic, GA (2010) [E1]
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2010 |
Yong YK, Moheimani SO, 'A compact XYZ scanner for fast atomic force microscopy in constant force contact mode', 2010 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings, Montreal, Canada (2010) [E1]
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2010 |
Zhu Y, Moheimani SO, Yuce MR, 'A MEMS nanopositioner with thermal actuator and on-chip thermal sensor', 2010 IEEE Sensors, Kona, HI (2010) [E2]
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2010 |
Ji L, Zhu Y, Moheimani SO, Yuce MR, 'A micromachined 2DOF nanopositioner with integrated capacitive displacement sensor', Sensors, 2010 IEEE: Proceedings of the Ninth IEEE Sensors Conference 2010, Waikoloa, Hawaii (2010) [E2]
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2010 |
Bazaei A, Yong YK, Moheimani SO, Sebastian A, 'Tracking control of a novel AFM scanner using signal transformation method', Preprints of the 5th IFAC Symposium on Mechatronic Systems, Cambridge, Massachusetts (2010) [E1]
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2009 |
Aphale SS, Ferreira A, Moheimani SO, 'Loop-shaping H [infinity]-control of a 2-DOF piezoelectric-stack actuated platform for nanoscale positioning', Proceedings - IEEE International Conference on Robotics and Automation, Kobe, Japan (2009) [E1]
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2009 |
Bhikkaji B, Moheimani SO, 'Fast scanning using piezoelectric tube nanopositioners: A negative imaginary approach', 2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings, Singapore (2009) [E1]
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2009 |
Yong YK, Moheimani SO, 'Vibration control of a novel tube scanner using piezoelectric strain-induced voltage', 2009 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Singapore (2009) [E1]
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2009 |
Pereira E, Aphale SS, Feliu V, Moheimani SO, 'A hybrid control strategy for vibration damping and precise tip-positioning of a single-link flexible manipulator', 5th IEEE International Conference on Mechatronics, Malaga, Spain (2009) [E1]
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2009 |
Zhu Y, Moheimani SO, Yuce MR, 'A 2-DOF wideband electrostatic transducer for energy harvesting and implantable applications', 2009 IEEE Sensors Conference, Christchurch, NZ (2009) [E2]
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Nova | |||||||||
2009 |
Zhu Y, Yuce MR, Moheimani SO, 'A low-loss MEMS tunable capacitor with movable dielectric', 2009 IEEE Sensors Conference, Christchurch, NZ (2009) [E2]
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Nova | |||||||||
2009 |
Fleming AJ, Aphale SS, Moheimani SO, 'A new robust damping and tracking controller for SPM positioning stages', Proceedings of the American Control Conference, St Louis, MO (2009) [E1]
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Nova | |||||||||
2009 |
Mahmood IA-T, Moheimani SO, 'Improvement of accuracy and speed of a commercial AFM using positive position feedback control', Proceedings of the American Control Conference, St Louis, MO (2009) [E1]
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Nova | |||||||||
2009 |
Chenniappan V, Moheimani SO, Yuce MR, 'A pendulum-like structure for design of oscillators', Advanced Materials Research, Singapore (2009) [E1]
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Nova | |||||||||
2008 | Pereira E, Moheimani SO, Aphale S, 'Op-Amp based analog implementation of the Integral Resonant Control Scheme', Proceedings ICAST 2008: 19th International Conference on Adaptive Structures and Technologies, Ascona, Switzerland (2008) [E2] | ||||||||||
2008 |
Yong YK, Liu K, Moheimani SO, 'H-infinity control for reducing cross-coupling in a compliant XY nanopositioning stage', Proceedings ICAST 2008: 19th International Conference on Adaptive Structures and Technologies, Ascona, Switzerland (2008) [E2]
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2008 |
Aphale SS, Fleming AJ, Moheimani SO, 'A second-order controller for resonance damping and tracking control of nanopositioning systems', Proceedings ICAST 2008: 19th International Conference on Adaptive Structures and Technologies, Ascona, Switzerland (2008) [E2]
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2008 |
Aphale SS, Bhikkaji B, Moheimani SO, 'A closed-loop approach to reducing scan errors in nanopositioning platforms', Proceedings of the 17th World Congress of the International Federation of Automatic Control, Seoul, Korea (2008) [E1]
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Nova | |||||||||
2008 |
Gawthrop PJ, Bhikkaji B, Moheimani SO, 'Physical-model-based control of a Piezoelectric tube scanner', Proceedings of the 17th World Congress of the International Federation of Automatic Control, Seoul, Korea (2008) [E1]
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Nova | |||||||||
2008 |
Sebastian A, Pantazi A, Moheimani SO, Pozidis H, Eleftheriou E, 'A self servo writing scheme for a MEMS storage device with sub-nanometer precision', Proceedings of the 17th World Congress of the International Federation of Automatic Control, Seoul, Korea (2008) [E1]
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Nova | |||||||||
2008 |
Yong YK, Liu K, Moheimani SOR, 'H A compliant XY nanopositioning platform designed for scanning probe microscopy applications is presented in this article. The device possesses a very high out-of-plane stiffness r... [more] A compliant XY nanopositioning platform designed for scanning probe microscopy applications is presented in this article. The device possesses a very high out-of-plane stiffness resulting in extremely low cross-coupling between various axes. However, cross-couplings between X-and Y-axes of the stage cannot be ignored during fast raster scans. A H8 controller is designed to minimize cross-coupling between these two axes of the nanoscale positioning stage, particularly at its mechanical resonance frequencies. The controller is augmented with integral action to achieve accurate tracking and damping. Raster scan results over an area of 10µm×10µm with small positioning errors are demonstrated. High-speed accurate raster scans of up to 100Hz, with nanoscale resolution are also illustrated.
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2008 |
Aphale SS, Fleming AJ, Moheimani SOR, 'A second-order controller for resonance damping and tracking control of nanopositioning systems', 19th International Conference on Adaptive Structures and Technologies 2008, ICAST 2008 (2008) This paper presents a simple second-order controller that damps the resonance typical of piezoelectric nanopositioners and delivers good tracking performance. This method employs ... [more] This paper presents a simple second-order controller that damps the resonance typical of piezoelectric nanopositioners and delivers good tracking performance. This method employs the Integral Resonant Control scheme (IRC) for damping the dominant resonant mode of the piezoelectric nanopositioner and uses an integral controller to achieve tracking performance. As disturbance rejection is a main concern in nanopositioning applications, the control scheme is tested for its disturbance rejection performance. It is seen that the control scheme has good disturbance rejection characteristics deeming it suitable for nanopositioning applications. To test the tracking performance, the system is made to track a 20 Hz triangular input at various integral gains. It is shown that improved tracking performance can be achieved at high gains with only a slight degradation in disturbance rejection performance at high frequencies.
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2008 |
Pereira E, Moheimani SOR, Aphale SS, 'Op-Amp based analog implementation of the Integral Resonant Control scheme', 19th International Conference on Adaptive Structures and Technologies 2008, ICAST 2008 (2008) The Integral Resonant Control (IRC) is a simple low-order control scheme that has been introduced as a high-performance controller design methodology for flexible structures with ... [more] The Integral Resonant Control (IRC) is a simple low-order control scheme that has been introduced as a high-performance controller design methodology for flexible structures with collocated actuator-sensor pairs. It is capable of achieving significant damping, over several modes, while guaranteeing closed-loop stability of the system in presence of unmodelled out-of-bandwidth dynamics. These reasons make the IRC an ideal controller for various industrial damping applications, if packaged in a simple easy-to-implement electronic module. In this work, we propose an analog implementation of the IRC scheme using a single Op-Amp circuit. The goal is to demonstrate that with a simple analog realization of the modified IRC scheme, it is possible to damp a large number of vibration modes. A brief discussion about the modeling, circuit considerations, implementation and experimental results is presented in order to validate the usefulness and practicality of the proposed analog IRC implementation.
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2008 |
Mahmood IA-T, Liu K, Moheimani SO, 'Two sensor based H 8 control of a piezoelectric tube scanner', Proceedings of the 17th World Congress of the International Federation of Automatic Control, Seoul, Korea (2008) [E1]
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Nova | |||||||||
2008 |
Aphale SS, Devasia S, Moheimani SO, 'Achieving high-bandwidth nanopositioning in presence of plant uncertainties', Proceedings of the 2008 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Xi'an, China (2008) [E1]
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Nova | |||||||||
2008 |
Yong YK, Aphale SS, Moheimani SO, 'Design, analysis and control of a fast nanopositioning stage', Proceedings of the 2008 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, Xi'an, China (2008) [E1]
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Nova | |||||||||
2008 |
Bhikkaji B, Moheimani SO, Petersen IR, 'Multivariable integral control of resonant structures', Proceedings of the 47th IEEE Conference on Decision and Control, Cancun, Mexico (2008) [E1]
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Nova | |||||||||
2007 |
Aphale SS, Moheimani SO, Fleming AJ, 'Dominant resonant mode damping of a piezoelectric tube nanopositioner using optimal sensorless shunts', American Control Conference, 2007. ACC '07. proceedings, New York (2007) [E1]
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2007 |
Aphale SS, Fleming AJ, Moheimani SOR, 'Integral resonant control of collocated smart structures', SMART MATERIALS AND STRUCTURES (2007) [E4]
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2007 |
Mahmood IA-T, Moheimani SO, Bhikkaji B, 'Precise tip positioning of a flexible manipulator using resonant control', 2007 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings, Zurich, Switzerland (2007) [E1]
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2007 |
Clayton GM, Tien S, Fleming AJ, Moheimani SO, Devasia S, 'Hysteresis and Vibration Compensation in Piezoelectric Actuators by Integrating Charge Control and Inverse Feedforward', Preprints of the 4th IFAC-Symposium on Mechatronic Systems, Heidelberg, Germany (2007) [E1]
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2007 |
Aphale SS, Fleming AJ, Moheimani SO, 'Integral control of smart structures with collocated sensors and actuators', Proceedings of the European Control Conference 2007, Kos, Greece (2007) [E1]
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2007 |
Mahmood IA-T, Bhikkaji B, Moheimani SO, 'Vibration and position control of a flexible manipulator', Conference Proceedings of 2007 Information, Decision and Control: IDC '07, Adelaide (2007) [E1]
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2007 |
Fleming AJ, Wills AG, Moheimani SO, 'Sensor fusion for improved control of piezoelectric tube scanners', 2007 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings, Zurich, Switzerland (2007) [E1]
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2007 |
Aphale SS, Moheimani SOR, Fleming AJ, 'Dominant resonant mode damping of a piezoelectric tube nanopositioner using optimal sensorless shunts', 2007 AMERICAN CONTROL CONFERENCE, VOLS 1-13, New York, NY (2007) [E1]
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2007 |
Bhikkaji B, Ratnam MR, Fleming AJ, Moheimani SO, 'High-Performance Control of a PZT Scanner', Preprints of the 4th IFAC-Symposium on Mechatronic Systems, Heidelberg, Germany (2007) [E1]
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2007 |
Aphale SS, Moheimani SO, Fleming AJ, 'Optimal Sensorless Shunts for Vibration Damping of a Piezoelectric Tube Nanopositioner', Proceedings of the 17th International Conference on Adaptive Structures and Technologies, Taipei, Taiwan (2007) [E2]
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2006 |
Fleming AJ, Moheimani SO, 'Proof-Mass Inertial Vibration Control Using a Shunted Electromagnetic Transducer', Proceedings of 16th IFAC World Congress, Prague, Czech Republic (2006) [E1]
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2006 | Vautier BJG, Moheimani SO, 'Multivariable LQG Vibration Control Using Charge-Driven Piezoelectric Actuators', Proceedings of 16th IFAC World Congress, Prague, Czech Republic (2006) [E1] | ||||||||||
2006 |
McKelvey T, Moheimani SO, 'Estimation of Phase Constrained Mimo Transfer Functions with Application to Flexible Structures with Mixed Collocated and Non-Collocated Actuators and Sensors', Proceedings of 16th IFAC World Congress, Prague, Czech Republic (2006) [E1]
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2006 |
Fleming AJ, Niederberger D, Moheimani SO, Morari M, 'Mitigation of acoustic resonance using electrically shunted loudspeakers', Proceedings of the Society of Photo-Optical Instrumentation Engineers: Smart Structures and Materials 2006: Damping and Isolation, San Diego, CA (2006) [E2]
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2006 | Bhikkaji B, Ratnam MR, Moheimani SO, 'PVPF control of piezoelectric tube scanners', Proceedings of the Society of Photo-Optical Instrumentation Engineers: Smart Structures and Materials 2006: Damping and Isolation, San Diego, CA (2006) [E2] | ||||||||||
2005 | Moheimani SO, 'Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium', Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium, Sydney (2005) [E4] | ||||||||||
2005 |
Wills AG, Bates DR, Fleming AJ, Ninness BM, Moheimani SO, 'Application of MPC to an Active Structure Using Sampling Rates up To 25kHz', Proceedings of the 44th IEEE Conference On Decision And Control, Seville, Spain (2005) [E1]
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2005 |
Fleming AJ, Moheimani SO, 'Senor-less Vibration Suppression and Scan Compensation for Piezoelectric Tube Nanopositioners (invited paper)', Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference 2005, Seville, Spain (2005) [E1]
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2005 |
Ratnam M, Bhikkaji B, Fleming AJ, Moheimani SO, 'PPF Control of a Piezoelectric Tube Scanner (invited paper)', Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference 2005, Seville, Spain (2005) [E1]
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2005 |
Moheimani SO, Vautier BJG, Bhikkaji B, 'Multivariable PPF Control of an Active Structure', Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference 2005, Seville, Spain (2005) [E1]
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2004 |
Lau K, Quevedo DE, Goodwin GC, Moheimani SO, 'Multi-modal modulated and demodulated vibration control of flexible structures using piezoelectric transducers', Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium, Sydney (2004) [E1]
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Nova | |||||||||
2004 |
Fleming AJ, Moheimani SO, 'Hybrid DC accurate charge amplifier for linear piezoelectric positioning', Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium, Sydney (2004) [E1]
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2004 |
Niederberger D, Fleming AJ, Moheimani SO, Morari M, 'Online-tuned multi-mode resonant piezoelectric shunt for broadband vibration suppression', Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium, Sydney (2004) [E1]
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2004 |
Behrens S, Fleming AJ, Moheimani SO, 'Negative inductor-resistor controller for electromagnetic shunt damping', Mechatronic Systems 2004, A Proceedings Volume from the 3rd IFAC Symposium, Sydney (2004) [E1]
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2004 | Moheimani SO, 'Recent developments in structural vibration control using piezoelectric transducers', Conference Paper, Prague, Czech Republic (2004) [E1] | ||||||||||
2004 |
Behrens S, Fleming AJ, Moheimani SO, 'Control orientated synthesis of electromagnetic shunt impedances for vibration isolation', CD ROM, Sydney (2004) [E1]
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2004 |
Behrens S, Fleming AJ, Moheimani SO, 'Vibration isolation using a shunted electromagnetic transducer', Conference Paper, San Diego California USA (2004) [E2]
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2004 |
Fleming AJ, Moheimani SO, 'Synthesis of optimal piezoelectric shunt impedances for structural vibration control', Conference Paper, San Diego California USA (2004) [E2]
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2003 |
Behrens S, Fleming AJ, Moheimani SOR, 'Electromagnetic shunt damping', PROCEEDINGS OF THE 2003 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS (AIM 2003), VOLS 1 AND 2, KOBE, JAPAN (2003)
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2003 | Vautier BJG, Moheimani SO, 'Avoiding hysteresis in vibration control using piezoelectric laminates', Proceedings 42nd IEEE Conference on Decision and Cont, Maui, Hawaii (2003) [E1] | ||||||||||
2003 |
Fleming AJ, Behrens S, Moheimani SO, 'Active LQR and H2 shunt control of electromagnetic transducers', Proceedings for CDC 2003 (CD ROM), Maui, Hawaii, USA (2003) [E1]
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2003 |
Behrens S, Fleming AJ, Moheimani SO, 'Electrodynamic Vibration Suppression', Proceedings of SPIE, San Diego, California (2003) [E2]
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2003 |
Fleming AJ, Moheimani SO, 'Improved current and charge amplifiers for driving piezoelectric loads', Proceedings of SPIE, San Diego, California (2003) [E2]
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2003 |
Behrens S, Fleming AJ, Moheimani SO, 'Robust passive Piezoelectric Shunt Dampener', Proceedings of SPIE, San Diego, California (2003) [E2]
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2003 |
Fleming AJ, Behrens S, Moheimani SO, 'An Autonomous Piezoelectric Shunt Damping System', Proceedings of SPIE, San Diego, California (2003) [E2]
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2002 |
Moheimani SO, Halim D, 'A Convex Optimization Approach to the Mode Acceleration Problem', 15th Triennial World Congress, Barcelona, Spain (2002) [E1]
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2002 |
Moheimani SO, Behrens S, Fleming AJ, 'Dynamics and Stability of Wideband Vibration Absorbers with Multiple Piezoelectric Transducers', 15th Triennial World Congress, Barcelona, Spain (2002) [E1]
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2002 |
Behrens S, Moheimani SO, Fleming AJ, 'Multiple Mode Passive Piezoelectric Shunt Dampener', Mechatronic Systems, Berkeley, California, USA (2002) [E1]
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2002 |
Fleming AJ, Moheimani SO, 'The Effect of Artificially Reducing the Size of Inductors in Piezoelectric Shunt Damping Circuits', Mechatronic Systems, Berkeley, California, USA (2002) [E1]
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2002 |
Fleming AJ, Moheimani SO, 'Power Harvesting Piezoelectric Shunt Damping', Mechatronic Systems, Berkeley, California, USA (2002) [E1]
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2002 |
Behrens S, Fleming AJ, Moheimani SO, 'Series-Parallel Impedance Structure for Piezoelectric Vibration Damping', Proceedings of SPIE - Smart Materials II, Melbourne, Australia (2002) [E1]
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2002 |
Moheimani SO, Behrens S, 'Multi-mode piezoelectric shunt damping with a highly resonant impedance', Proceedings of the 2002 IEEE International Conference on Control Applications, Glasgow, Scotland (2002) [E1]
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2002 |
Halim D, Moheimani SO, 'Compensating for the trunction error in models of resonant systems that include damping', Proceedings of the 41st IEEE Conference on Decision and Control, Las Vegas, Nevada, USA (2002) [E1]
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2002 |
Fleming AJ, Moheimani SO, 'Adaptive Piezoelectric Shunt Damping', Smart Structures and Materials 2002: Damping and Isolation, San Diego, USA (2002) [E1]
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2002 |
Behrens S, Moheimani SO, 'Current Flowing Multiple Mode Piezoelectric Shunt Dampener', Smart Structures and Materials 2002:Damping and Isolation, San Diego, USA (2002) [E1]
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2002 |
Moheimani SO, Fleming AJ, Behrens S, 'On the Feedback Structure of Wideband Piezoelectric Shunt Damping Systems', 15th Triennial World Congress, Barcelona, Spain (2002) [E1]
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2001 |
Halim D, Moheimani SO, 'Spatial Control of Flexible Structures - Application of Spatial H~ control to a Piezoelectric Laminate Beam', Proceedings of the American Control Conference, Arlington, Virginia (2001) [E1]
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2001 |
Halim D, Moheimani SO, 'Spatial Resonant Control with Collocated Piezoelectric Actuator/Sensor Pairs', Proceedings of the American Control Conference, Arlington, Virginia (2001) [E1]
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2001 |
Halim D, Moheimani SO, 'Experiments on Spatial H2 Control for Vibration Suppression of a Piezoelectric Laminate Beam', Proceedings of 40th IEEE Conference on Decision and Control, Orlando,Florida USA (2001) [E1]
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2000 |
Moheimani SOR, 'Minimizing the effect of out-of-bandwidth dynamics in the models of reverberant systems that arise in modal analysis: implications on spatial H-infinity Control', AUTOMATICA (2000) [E1]
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2000 |
Behrens S, Moheimani SO, 'Optimal Resistive Elements for Multiple Mode Shunt Damping of a Piezoelectric Laminate Beam', CDC Downunder (CD-Rom), Sydney, Australi (2000) [E1]
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2000 |
McKelvey T, Fleming AJ, Moheimani SO, 'Subspace based system identification for an acoustic enclosure', Proceedings of IEEE International Conference on Control Applications & IEEE International Symposium on Computer-Aided Control Systems Design, Alaska, USA (2000) [E1]
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2000 |
Fleming AJ, Behrens S, Moheimani SO, 'A New Approach to Piezoelectric Shunt Damping', Proceedings of IS3M 2000 Symposium, Hong Kong (2000) [E1]
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2000 |
De Dona JA, Moheimani SO, Goodwin GC, 'Robust combined PLC/LHG controller with allowed over-saturation of the input signal', Proceedings of the American Control Conference, Chicago, Illinois, USA (2000) [E1]
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2000 |
Moheimani SO, Heath WP, 'Model correction for a class of spatio-temporal systems', Proceedings of the American Control Conference, Chicago, Illinois, USA (2000) [E1]
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2000 |
Moheimani SO, Clark RL, 'Minimizing the truncation error in assumed modes models of structures', Proceedings of the American Control Conference, Chicago, Illinois, USA (2000) [E1]
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2000 |
Halim D, Moheimani SO, 'Experiments in Spatial H Control of a Piezoelectric Laminate Beam', Robust Control Workshop 2000 - Workshop Proceedings (CD-Rom), Newcastle, Australia (2000) [E2]
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2000 |
Moheimani SOR, Clark RL, 'Minimizing the truncation error in assumed modes models of structures', PROCEEDINGS OF THE 2000 AMERICAN CONTROL CONFERENCE, VOLS 1-6, CHICAGO, IL (2000)
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1999 |
Reza Moheimani SO, 'Experimental verification of the corrected transfer function of a piezoelectric laminate beam', IDC 1999 - 1999 Information, Decision and Control, Data and Information Fusion Symposium, Signal Processing and Communications Symposium and Decision and Control Symposium: Proceedings (1999) Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modelling technique for piezoelectric laminates is the assumed... [more] Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modelling technique for piezoelectric laminates is the assumed modes method which results in an infinite-dimensional model of the composite structure. For control design purposes, such a model is simplified by removing higher frequency modes which lie outside of the bandwidth of interest. Truncation can considerably perturb the in-band zeros of the truncated model. This paper suggests a method of minimizing the effect of the removed higher order modes on the low frequency dynamics of the truncated model of a piezoelectric laminated beam by adding a zero frequency term to the low order model of the laminate. Simulations and experimental results are presented.
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1999 | Petersen IR, Moheimani SO, Pota HR, 'Minimax LQG Optimal Control of Acoustic Noise in a Duct', IFAC World Congress 1999, Beijing, P.R. China (1999) [E1] | ||||||||||
1999 |
De Dona JA, Moheimani SO, Goodwin GC, Feuer A, 'Allowing for Over-Saturation in Robust Switching Control of a Class of Uncertain Systems', Proceedings of the 38th Conference on Decision and Control, Phoenix, Arizona USA (1999) [E1]
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1999 |
Moheimani SO, Ryall T, 'Considerations on Placement of Piezoceramic Actuators that are used in Structural Vibration Control', Proceedings of the 38th Conference on Decision and Control, Phoenix, Arizona USA (1999) [E1]
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1999 | Moheimani SO, 'An Experimental Verification of the Reduced Order Transfer Function of a Piezoelectric Laminate Beam', Proceedings of the 38th Conference on Decision and Control, Phoenix, Arizona USA (1999) [E1] | ||||||||||
1999 | Moheimani SO, 'Minimizing the Effect of out of Bandwidth Dynamics in the Models of Reverberant Systems that arise in Modal Analysis: Implications on Spatial H(infinity) Control', Proceedings of the 38th Conference on Decision and Control, Phoenix, Arizona USA (1999) [E1] | ||||||||||
1999 |
Pota HR, Moheimani SO, Smith M, 'Resonant Controllers for Flexible Structures', Proceedings of the 38th Conference on Decision and Control, Phoenix, Arizona USA (1999) [E1]
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1999 |
Moheimani SO, 'Minimizing the Effect of Out of Bandwidth Modes in the Truncated Assumed Modes Models of Structures', Proceedings of the American Control Conference, San Diego, California, USA (1999) [E1]
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1998 |
Moheimani SO, Pota HR, Petersen IR, 'Active control of noise and vibration in acoustic ducts and flexible structures - a Spatial Control approach', Proceedings of the 1998 American Control Conference, Philadelphia, Pennsylvania (1998) [E1]
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1998 |
Moheimani SO, Pota HR, Petersen IR, 'Spatial Control of Active Vibration Control of Piezoelectric Laminates', Proceedings of the 37th IEEE Conference on Decision and Control, Tampa, Florida USA (1998) [E1]
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1998 |
Moheimani SO, Fu M, 'Spatial H2 norm of flexible structures and its application in model order selection', Proceedings on the 37th IEEE Conference on Decision and Control, Tampa, Florida USA (1998) [E1]
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1998 |
Esfahani SH, Moheimani SOR, Petersen IR, 'LMI approach to suboptimal guaranteed cost control for uncertain time-delay systems', IEE PROCEEDINGS-CONTROL THEORY AND APPLICATIONS (1998) [E1]
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Show 215 more conferences |
Grants and Funding
Summary
Number of grants | 39 |
---|---|
Total funding | $22,618,735 |
Click on a grant title below to expand the full details for that specific grant.
20141 grants / $37,585
Cantilever mass sensing application in a microfluidic device$37,585
Funding body: CSIRO - Commonwealth Scientific and Industrial Research Organisation
Funding body | CSIRO - Commonwealth Scientific and Industrial Research Organisation |
---|---|
Project Team | Professor Reza Moheimani, Mr Michael Ruppert |
Scheme | Postgraduate Scholarship |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2016 |
GNo | G1400764 |
Type Of Funding | Other Public Sector - Commonwealth |
Category | 2OPC |
UON | Y |
20131 grants / $447,629
Control, estimation and nanopositioning for high-throughput probe-storage $447,629
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2015 |
GNo | G1200018 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20125 grants / $626,912
Facility for Characterization of Engineered Microelectromechanical Systems$300,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani, Professor Erich Kisi, Scientia Professor Ian Petersen, Professor Gursel Alici, Dr Elanor Huntington, Dr Sam Behrens, Associate Professor Charles Harb, Dr Hermanshu Pota, Associate Professor Weihua Li, Associate Professor James Welsh, Associate Professor Terrence Summers |
Scheme | Linkage Infrastructure Equipment & Facilities (LIEF) |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1100803 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
Facility for Characterization of Engineered Microelectromechanical Systems$200,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Professor Erich Kisi, Associate Professor James Welsh, Associate Professor Terrence Summers |
Scheme | Equipment Grant |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1100690 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Facility for Characterization of Engineered Microelectromechanical Systems$53,621
Funding body: CSIRO - Commonwealth Scientific and Industrial Research Organisation
Funding body | CSIRO - Commonwealth Scientific and Industrial Research Organisation |
---|---|
Project Team | Professor Reza Moheimani, Professor Erich Kisi, Scientia Professor Ian Petersen, Professor Gursel Alici, Dr Elanor Huntington, Dr Sam Behrens, Associate Professor Charles Harb, Dr Hermanshu Pota, Associate Professor Weihua Li, Associate Professor James Welsh, Associate Professor Terrence Summers |
Scheme | Linkage Infrastructure Equipment & Facilities (LIEF) Partner Funding |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1200708 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
Facility for Characterization of Engineered Microelectromechanical Systems$53,291
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani, Professor Erich Kisi, Scientia Professor Ian Petersen, Professor Gursel Alici, Dr Elanor Huntington, Dr Sam Behrens, Associate Professor Charles Harb, Dr Hermanshu Pota, Associate Professor Weihua Li, Associate Professor James Welsh, Associate Professor Terrence Summers |
Scheme | Linkage Infrastructure Equipment & Facilities (LIEF) Partner Funding |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1200709 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
High-performance controller design for high-speed manipulation and imaging at nanometre-scale $20,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Doctor Mehmet Yuce |
Scheme | Near Miss Grant |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1200669 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20111 grants / $25,000
Innovations in Feedback-Controlled Nanoscale Manipulation and Imaging$25,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Associate Professor Yuen Yong |
Scheme | Near Miss Grant |
Role | Lead |
Funding Start | 2011 |
Funding Finish | 2011 |
GNo | G1001038 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20101 grants / $35,000
Multidimensional vibration energy harvesting$35,000
Funding body: CSIRO - Energy Technology
Funding body | CSIRO - Energy Technology |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Postgraduate Research Scholarship |
Role | Lead |
Funding Start | 2010 |
Funding Finish | 2013 |
GNo | G1000732 |
Type Of Funding | Other Public Sector - Commonwealth |
Category | 2OPC |
UON | Y |
20094 grants / $1,636,400
Advanced model-based control for ultra-fast and ultra-high-precision nanoscale positioning CC inactive in Tech One awaiting funds to be returned to the ARC$891,200
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Future Fellowships |
Role | Lead |
Funding Start | 2009 |
Funding Finish | 2013 |
GNo | G0189719 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Electron Microscopes for Nanometer-scale Imaging/Microanalysis in the Materials, Biological, Physical, Engineering and Chemical Sciences$650,000
Funding body: ARC (Australian Research Council)
Electron Microscopes for Nanometer-scale Imaging/Microanalysis in the Materials, Biological, Physical, Engineering and Chemical Sciences$70,000
Funding body: ARC (Australian Research Council)
Signal Transformation Approach to Nanopositioning$25,200
Funding body: IBM Research - Zurich
Funding body | IBM Research - Zurich |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Joint Study Agreement |
Role | Lead |
Funding Start | 2009 |
Funding Finish | 2009 |
GNo | G0190527 |
Type Of Funding | International - Non Competitive |
Category | 3IFB |
UON | Y |
20082 grants / $9,971,084
Centre for Complex Dynamic Systems and Control$9,648,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Emeritus Laureate Professor Graham Goodwin, Professor Minyue Fu, Professor Reza Moheimani, Doctor Julio Braslavsky, Dr GREG Adams, Associate Professor Jose De Dona, Associate Professor Maria Seron, Associate Professor James Welsh, Professor Andrew Fleming, Associate Professor Tristan Perez, Doctor Damian Marelli, Associate Professor Brailey Sims, Conjoint Professor Kerrie Mengersen, Professor A Pettitt, Dr R Reeves, Professor Ian Turner, Dr Salvatore Crisafulli, Dr M Downey, Mr J Lee, Mr P Stone, Conjoint Professor John Rayner |
Scheme | ARC Centres of Excellence |
Role | Investigator |
Funding Start | 2008 |
Funding Finish | 2010 |
GNo | G0188623 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Centre for Complex Dynamic Systems and Control$323,084
Funding body: NSW Department of State and Regional Development
Funding body | NSW Department of State and Regional Development |
---|---|
Project Team | Emeritus Laureate Professor Graham Goodwin, Professor Minyue Fu, Professor Reza Moheimani, Doctor Julio Braslavsky, Dr GREG Adams, Associate Professor Jose De Dona, Associate Professor Maria Seron, Associate Professor James Welsh, Professor Andrew Fleming, Doctor Damian Marelli, Associate Professor Brailey Sims, Conjoint Professor Kerrie Mengersen, Professor A Pettitt, Dr R Reeves, Professor Ian Turner, Dr Salvatore Crisafulli, Dr M Downey, Mr J Lee, Mr P Stone |
Scheme | ARC Centres of Excellence Partner Funding |
Role | Investigator |
Funding Start | 2008 |
Funding Finish | 2010 |
GNo | G0189187 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
20072 grants / $884,000
Robust Control of Electrostatic Microactuators$870,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani, Doctor Mehmet Yuce |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2011 |
GNo | G0186355 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
RQF Support for Assistant Dean (Research)$14,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Internal Research Support |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2007 |
GNo | G0187948 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20062 grants / $928,875
Nano-positioning facility for nano-scale measurement and manipulation$530,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani, Scientia Professor Ian Petersen, Emeritus Laureate Professor Graham Goodwin, Emeritus Professor Rick Middleton, Professor Minyue Fu, Dr Valeri Ougrinovska, Dr Hermanshu Pota, Professor Andrew Fleming, Dr Steven Schofield |
Scheme | Linkage Infrastructure Equipment & Facilities (LIEF) |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2006 |
GNo | G0185548 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
Advanced Control of Dual-Stage Hard Disk Drives$398,875
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2008 |
GNo | G0185298 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20053 grants / $19,782
Advanced Control of Dual-Stage Hard Disk Drives$9,105
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Project Grant |
Role | Lead |
Funding Start | 2005 |
Funding Finish | 2005 |
GNo | G0184640 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
High speed nano-positioner for scanning probe microscopy and nano-manufacturing$8,277
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Professor Minyue Fu |
Scheme | Project Grant |
Role | Lead |
Funding Start | 2005 |
Funding Finish | 2005 |
GNo | G0184716 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
44th IEEE Conference on Decision and Control and European Control Conference ECC 2005, 12-15 December 2005$2,400
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2005 |
Funding Finish | 2005 |
GNo | G0185925 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20041 grants / $8,966
Sensor-less electromagnetic noise control in acoustic enclosures$8,966
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Project Grant |
Role | Lead |
Funding Start | 2004 |
Funding Finish | 2004 |
GNo | G0183489 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20032 grants / $7,105,929
Centre for Complex Dynamic Systems and Control.$6,929,432
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Emeritus Professor Rick Middleton, Emeritus Laureate Professor Graham Goodwin, Professor Minyue Fu, Conjoint Professor Kerrie Mengersen, Professor Iain Raeburn, Professor Reza Moheimani, Dr William Heath, Doctor Julio Braslavsky, Associate Professor Jose De Dona, Doctor Richard Gerlach, Associate Professor Maria Seron, Associate Professor Brailey Sims |
Scheme | ARC Centres of Excellence |
Role | Investigator |
Funding Start | 2003 |
Funding Finish | 2007 |
GNo | G0182216 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Robust Control and System Identification of Highly Resonant Systems.$176,497
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani, Professor Brett Ninness |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2003 |
Funding Finish | 2005 |
GNo | G0182060 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20023 grants / $106,904
Robust control of spatially distributed uncertain systems$92,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2002 |
Funding Finish | 2003 |
GNo | G0181101 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Control of emitted noise from switched reluctance drives using shunted piezoelectric transducers$12,504
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Doctor Colin Coates, Professor Robert Betz |
Scheme | Project Grant |
Role | Lead |
Funding Start | 2002 |
Funding Finish | 2002 |
GNo | G0181289 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
IEEE Conference on Control Applications, Glasgow, Scotland 17-20 September 2002$2,400
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2002 |
Funding Finish | 2002 |
GNo | G0182295 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20013 grants / $20,400
Vibration reduction by shunt-damping of peizoelectric actuators.$13,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Project Grant |
Role | Lead |
Funding Start | 2001 |
Funding Finish | 2001 |
GNo | G0179939 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Modeling and identification of spatio-temporal systems for control via modal analysis$5,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Dr William Heath, Professor Reza Moheimani |
Scheme | Project Grant |
Role | Investigator |
Funding Start | 2001 |
Funding Finish | 2001 |
GNo | G0180023 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
American Control Conference, USA 25-27 June 2001$2,400
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2001 |
Funding Finish | 2001 |
GNo | G0180940 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20003 grants / $79,002
Direct feedback control of vibrations using piezoelectric actuators$52,131
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Emeritus Professor Rick Middleton |
Scheme | Multi-Year Project Grant Scholarship |
Role | Lead |
Funding Start | 2000 |
Funding Finish | 2002 |
GNo | G0178814 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Optimal placement of Piezoceramic actuators for Vibration Control.$25,000
Funding body: Defence Science and Technology Group
Funding body | Defence Science and Technology Group |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Aeronautical and Maritime Research Laboratory (AMRL) |
Role | Lead |
Funding Start | 2000 |
Funding Finish | 2001 |
GNo | G0179192 |
Type Of Funding | Other Public Sector - Commonwealth |
Category | 2OPC |
UON | Y |
International Symposium on Smart Structures and Microsystems 2000, Hong Kong 19-21 October 2000$1,871
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2000 |
Funding Finish | 2000 |
GNo | G0180165 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
19994 grants / $683,088
Smart Structures Control Laboratory$500,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | S. O. R. Moheimani |
Scheme | Linkage Infrastructure Equipment & Facilities (LIEF) |
Role | Lead |
Funding Start | 1999 |
Funding Finish | 1999 |
GNo | |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | N |
Controller design methodologies for active vibration control of piezoelectric laminates$171,688
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Australian Postdoctoral Research Fellowship |
Role | Lead |
Funding Start | 1999 |
Funding Finish | 2002 |
GNo | G0177873 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Robust Filtering and Parameter Estimation for Active Noise Control$9,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani, Professor Minyue Fu |
Scheme | Project Grant |
Role | Lead |
Funding Start | 1999 |
Funding Finish | 1999 |
GNo | G0178040 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
IEEE Conference on Decision and Control Phoenix, Arizona, USA.$2,400
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 1999 |
Funding Finish | 1999 |
GNo | G0180460 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
19981 grants / $2,179
American Control Conference, USA 22-26 June 1998$2,179
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Reza Moheimani |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 1998 |
Funding Finish | 1998 |
GNo | G0180357 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Research Supervision
Number of supervisions
Past Supervision
Year | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2017 | PhD | Enhanced Methods for System Identification employing Instrumental Variables, Regularization and Useful Redundancy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2017 | PhD | Self-Sensing, Estimation and Control in Multifrequency Atomic Force Microscopy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2016 | PhD | Instrumentation Techniques for the Control of MEMS Nanopositioners | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2015 | PhD | Design, Analysis and Control of a MEMS Micro-Gripper | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2015 | PhD | MEMS-Based Nanopositioning for On-Chip High-Speed Scanning Probe Microscopy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2014 | PhD | Design and Analysis of Novel Microelectromechanical Systems for Energy Harvesting and Nanopositioning Applications | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2014 | PhD | Design, Characterization and Control of Serial-Kinematic X-Y-Z Nanopositioner for High-Speed Atomic Force Microscopy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2014 | PhD | High Precision MEMS Displacement Sensors Device Techniques and Readout Circuits | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2014 | PhD | Control and Estimation Techniques for High-Bandwidth Dynamic Mode Atomic Force Microscopy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2013 | PhD | Feedback Control of the Atomic Force Microscope Micro-cantilever for Improved Imaging | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2010 | PhD | Vibration and Position Control of Piezoelectric Tube Scanners for Fast Atomic Force Microscopy | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2005 | PhD | Vibration Control Using Shunted Piezoelectric and Electromagnetic Transducers | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2004 | Masters | Charge-Driven Piezoelectric Actuators in Structural Vibration Control Applications | M Engineering (Elec & Comp)[R], College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2004 | Masters | Charge-Driven Piezoelectric Actuators in Structural Vibration Control Applications | Electrical Engineering, University of Newcastle | Principal Supervisor |
2004 | PhD | Synthesis and Implementation of Sensor-less Shunt Controllers for Piezoelectric and Electromagnetic Vibration Control | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2003 | PhD | Vibration Analysis and Control of Smart Structures | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2001 | Masters | Passive and Semi-active Vibration Control of Piezoelectric Laminates | Electrical Engineering, University of Newcastle | Principal Supervisor |
Research Collaborations
The map is a representation of a researchers co-authorship with collaborators across the globe. The map displays the number of publications against a country, where there is at least one co-author based in that country. Data is sourced from the University of Newcastle research publication management system (NURO) and may not fully represent the authors complete body of work.
Country | Count of Publications | |
---|---|---|
Australia | 337 | |
United States | 78 | |
Switzerland | 20 | |
United Kingdom | 15 | |
India | 13 | |
More... |
News
News • 4 Feb 2019
Dr Michael Ruppert receives IEEE Best Paper Award
Dr Michael Ruppert, a research associate in the School of Electrical Engineering and Computing, attended the IEEE Control Systems Society Awards Ceremony at the 2018 IEEE Conference on Decision and Control in Miami, Florida, on December 18, 2018, to accept the outstanding paper award from the journal IEEE Transactions on Control Systems Technology.
News • 25 Aug 2014
UON researcher collects prestigious medal
In an Australian-first, University of Newcastle nanotechnology researcher Professor Reza Moheimani has been awarded the prestigious Nichols Medal in Cape Town.
Professor Reza Moheimani
Position
Adjunct Professor
School of Engineering
College of Engineering, Science and Environment
Focus area
Electrical and Computer Engineering
Contact Details
reza.moheimani@newcastle.edu.au | |
Phone | (02) 4921 6030 |
Fax | (02) 4921 6993 |
Office
Room | EAG27 |
---|---|
Building | Engineering A Building |
Location | Callaghan University Drive Callaghan, NSW 2308 Australia |