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ICNPAA 2004: Mathematical Problems in Engineering and Aerospace Sciences
June 2-4, 2004
The West University of Timisoara
Timisoara, Romania

Organizers
Conference Organizer and Chair: Seenith Sivasundaram

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Influence of Nonlinear Properties of Piezoelectric Actuators on the Control of Flexible Structures
by
Lucian Iorga
Rutgers University, 98 Brett Rd., Piscataway, NJ 08854, USA
Coauthors: Haim Baruh

Piezoelectric materials display a pronounced nonlinear behavior especially when subject to strong electric fields as is the case in structural control applications. The piezoelectric constitutive equations are modified to take into account terms nonlinear in the electric field. A pseudo-hysteretic model based on these equations is used to evaluate the influence of nonlinearities in the response of elastic structures incorporating piezoelectric actuators. Simple control laws based on the set of linear piezoelectric constitutive equations are employed to counter vibrations in simple beam and plate structures. The effect of the nonlinearities is qualitatively analyzed and guidelines to modify the control laws to account for the nonlinearities are drawn up.

Date received: February 23, 2004

Copyright © 2004 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cakt-62.