Piezoelectric power requirements for active vibration control

Matthew C. Brennan; Anna-Maria Rivas McGowan

doi:10.1117/12.276584

13 June 1997 Piezoelectric power requirements for active vibration control

Matthew C. Brennan, Anna-Maria Rivas McGowan

Proceedings Volume 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures; (1997) https://doi.org/10.1117/12.276584
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Matthew C. Brennan and Anna-Maria Rivas McGowan "Piezoelectric power requirements for active vibration control", Proc. SPIE 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures, (13 June 1997); https://doi.org/10.1117/12.276584

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