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arXiv · 1007.1591

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

Stefano Vidoli·Francesco dell'Isola
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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

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Stefano Vidoli, Francesco dell'Isola. 2010-07-09. Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks. https://doi.org/10.1016/s0997-7538(01)01144-5

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