Finite element analysis and design of actively controlled piezoelectric smart structures

Authors:
S. X. Xu;T. S. Koko
Affiliations:
Cornell Fracture Group, 641 Rhodes Hall, Cornell University, Ithaca, NY;Research and Emerging Technologies Department, Martec Limited, Suite 400, 1888 Brunswick Street, Halifax, Canada, NS B3J 3J8
Venue:
Finite Elements in Analysis and Design
Year:
2004

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Abstract

A general purpose design scheme of actively controlled smart structures with piezoelectric sensors and actuators is presented in this study. The proposed scheme can make use of any finite element code with piezoelectric elements, and control design is carried out in state space form established on finite element modal analysis. Subsequent details of designing state/output feedback control are addressed. For the purpose of demonstration, a commercial finite element code complemented with output feedback control law is employed to design a set of structure systems for active vibration control. The validity and efficiency of present scheme is confirmed by comparing with available reported results. The present scheme can be adapted to the design of actively controlled smart structures with non-piezoelectric sensors or actuators.