Vibration Control of Plates Using Self-Sensing Active Constrained Layer Damping Networks

Abstract

The Active Constrained Layer Damping (ACLD) treatment has been used successfully for controlling the vibration of various flexible structures. The treatment provides an effective means of augmenting the simplicity and reliability of passive damping with the low weight and high efficiency of active controls to attain high damping characteristics over broad frequency bands. In this study, a self-sensing configuration of the ACLD treatment is utilized to suppress the bending and torsional vibrations of cantilevered plates simultaneously. The treatment considered ensures collocation of the sensors/actuators pairs in order to guarantee stable operation. The theoretical characteristics of the multi-layer treatment are presented in this paper and compared with the experimental performance.

Attenuation of the amplitude of vibration of the first bending and torsional modes of more than 96% and 35% are obtained using proportional controller with voltages less than 93 volts. The corresponding attenuation becomes and 90% and 84% when a derivative controller is used with voltage of 82 volt.

Keywords

Active constrained layer damping self-sensing active constrained layer damping multi-mode damping

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