Distributed Modal Identification and Vibration Control of Continua: Piezoelectric Finite Element Formulation and Analysis

[+] Author and Article Information
H. S. Tzou

Department of Mechanical Engineering, Center for Robotics and Manufacturing Systems, University of Kentucky, Lexington, KY 40506-0046

C. I. Tseng

Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0046

J. Dyn. Sys., Meas., Control 113(3), 500-505 (Sep 01, 1991) (6 pages) doi:10.1115/1.2896438 History: Revised April 01, 1990; Received October 09, 1990; Online March 17, 2008


“Smart” continua with integrated sensor/actuator for structural identification and control have drawn much attention in recent years due to the rapid development of high-performance “smart” structures. The continua are distributed and flexible in nature. Thus, distributed dynamic measurement and active vibration control are of importance to their high-demanding performance. In this paper, continua (shells or plates) integrated with distributed piezoelectric sensors and actuators are studied using a finite element technique. A new piezoelectric finite element with internal degrees of freedom is derived. Two control algorithms, namely, constant gain feedback control and Lyapunov control, are implemented. Structural identification and control of a plate model with distributed piezoelectric sensor/actuator is studied. Distributed modal voltage and control effectiveness of mono and biaxially polarized piezoelectric actuators are evaluated.

Copyright © 1991 by The American Society of Mechanical Engineers
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