Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks

TL;DR

This paper introduces a novel device using uniformly distributed interconnected PZT actuators embedded in plates to control vibrations, combining electric network modeling with optimal impedance tuning for improved performance.

Contribution

The paper presents a new device design with interconnected piezoelectric actuators and a mathematical model for electro-mechanical wave propagation, enabling enhanced vibration control.

Findings

The device effectively controls plate vibrations.

Optimal net-impedance improves actuation performance.

Model validity is limited to certain waveforms.

Abstract

In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node of an electric network to ground, thus playing the two-fold role of capacitive element in the electric network and of couple suppliers. A mathematical model is introduced to describe the propagation of electro-mechanical waves in the device; its validity is restricted to the case of wave-forms with wave-length greater than the dimension of the piezoelectric actuators used. A self-resonance criterion is established which assures the possibility of electro-mechanical energy exchange. Finally the problem of vibration control in simply supported and clamped plates is addressed; the optimal net-impedance is determined. The results indicate that the proposed device can improve the performances of piezoelectric actuation