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Proceedings Paper

Dynamic analysis of active structures under multiple actuators excitations using an impedance approach
Author(s): Alessandra Sermoneta; Chen Liang; Fanping P. Sun; Craig A. Rogers
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Paper Abstract

Dynamic interaction between an integrated induced strain actuator and its host structure depends on the driving point mechanical impedance of the host structure and the mechanical impedance of the actuator. For the case of several actuators, the individual actuator/structure impedance will not only depend on the driving point host structural impedance, but also on the electromechanical coupling with the other actuators. In this paper, a general dynamic model of a structure driven by multiple actuators is presented, as based on an impedance modeling approach developed for a single actuator. The basic formulation is provided in terms of structural admittance of an arbitrary structure and dynamic transduction relations of transducers. It can be easily applied to any form of structure and actuators, even an electromagnetic shaker, provided their dynamic transduction relations can be developed. The developed theoretical model has been used to predict the dynamic response of a simply- supported beam with several bonded piezoelectric actuators activated simultaneously. Experiments have also been conducted which validate the theoretical model.

Paper Details

Date Published: 8 May 1995
PDF: 10 pages
Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208281
Show Author Affiliations
Alessandra Sermoneta, Univ. di Roma La Sapienza (Italy)
Chen Liang, San Diego 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. 2443:
Smart Structures and Materials 1995: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)

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