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Proceedings Paper

Dynamic output characteristics of piezoelectric actuators
Author(s): Chen Liang; Fanping P. Sun; Craig A. Rogers
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Paper Abstract

Like every dynamic output device, piezoceramic (PZT) actuators have their own output characteristics. The output characteristics of PZT actuators are functions of frequency and may be treated as frequency independent only in a certain frequency range. The dynamic excitation provided by a PZT actuator depends on its dynamic characteristics and structural mechanical impedance. The conventional method of using the statically determined induced moment or the force of PZT actuators as forcing functions is not correct. This paper uses a simple example, a PZT actuator-driven one-degree-of-freedom spring-damper-mass system, to illustrate the methodology used to determine the dynamic characteristics of PZT actuators and the structural response based on the concept of structural impedance.

Paper Details

Date Published: 23 July 1993
PDF: 12 pages
Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993); doi: 10.1117/12.148503
Show Author Affiliations
Chen Liang, Virginia Polytechnic Institute and State Univ. (United States)
Fanping P. Sun, Virginia Polytechnic Institute and State Univ. (United States)
Craig A. Rogers, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1916:
Smart Structures and Materials 1993: Smart Materials
Vijay K. Varadan, Editor(s)

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