Reduction of plate vibration and acoustic radiation using adaptively controlled boundaries

Abstract

Reduction of plate vibration and acoustic radiation at low frequencies using adaptively controlled boundaries is experimentally demonstrated. The control is based on changing the clamping pressure at the boundaries of the plate to continuously detune the plate resonance frequencies from the frequency of pure-tone excitation. Results are presented for the control of plate vibration with constant and varying frequencies of excitation and for the control of acoustic radiation with constant frequency excitation.