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Proceedings Paper

Piezoelectric power requirements for active vibration control
Author(s): Matthew C. Brennan; Anna-Maria Rivas McGowan
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Paper Abstract

This paper presents a method for predicting the power consumption of piezoelectric actuators utilized for active vibration control Analytical developments and experimental test show that the maximum power required to control a structure using surface-bonded piezoelectric actuators is independent of the dynamics between the piezoelectric actuator and the host structure. The results demonstrate that for a perfectly-controlled system, the power consumption is a function of the quantity and type of piezoelectric actuators and the voltage and frequency of the control law output signal. Furthermore, as control effectiveness decreases, the power consumption of the piezoelectric actuators decreases. In addition, experimental results revealed a nonlinear behavior in the material properties of piezoelectric actuators. The material nonlinearity displayed a significant increase in capacitance with an increase in excitation voltage. Tests show that if the nonlinearity of the capacitance was accounted for, a conservative estimate of the power can easily be determined.

Paper Details

Date Published: 13 June 1997
PDF: 10 pages
Proc. SPIE 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures, (13 June 1997); doi: 10.1117/12.276584
Show Author Affiliations
Matthew C. Brennan, George Washington Univ. (United States)
Anna-Maria Rivas McGowan, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3039:
Smart Structures and Materials 1997: Mathematics and Control in Smart Structures
Vasundara V. Varadan; Jagdish Chandra, Editor(s)

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