Australian Digital Theses Program

Thesis Details
Title	Vibration Analysis and Control of Smart Structures
Author	Halim, Dunant
Institution	University of Newcastle
Date	2003
Abstract	This thesis represents the work that has been done by the author in the area of vibration analysis and control of smart structures during his PhD candidature. The research was concentrated on flexible structures, using piezoelectric materials as actuators and sensors. The thesis consists of four major parts. The first part (Chapter 2) is the modelling of piezoelectric laminate structures using modal analysis and finite element methods. The second part (Chapter 4) involves the model correction of pointwise and spatial models of resonant systems. The model correction solution compensates for the errors associated with the truncation of high frequency modes. The third part (Chapter 5) is the optimal placement methodology for general actuators and sensors. In particular, optimal placement of piezoelectric actuators and sensors over a thin plate are considered and implemented in the laboratory. The last part (Chapters 6 to 8) deals with vibration control of smart structures. Several different approaches for vibration control are considered. Vibration control using resonant, spatial H-2 and H-infinity control is proposed and implemented on real systems experimentally. It is possible, for certain modes, to obtain the very satisfactory result of up to 30 dB vibration reduction.
Thesis	01front.pdf 122.3 Kb 02chapters1-4.pdf 1052.3 Kb 03chapters5-6.pdf 3001.2 Kb 04chapter7.pdf 4369.4 Kb 05chapter8.pdf 4348.1 Kb 06chapter9.pdf 44.6 Kb 07appendix-bibliog.pdf 172.0 Kb