Active Power Flow Control of a Thin Plate(Generation of a Quiet Zone by Using Vibration Intensity Suppression)

Abstract

This paper addresses the active power flow control of a vibrating plate. Unlike conventional modal-based vibration control, power flow control falling into a category of active wave control has the potential for suppressing all the vibration modes of a target structure. From a viewpoint of wave propagation, this paper pressents a novel power flow control using vibration intensity as a criterion of vibration energy flow. By expanding the conception of the approach presented in the work, a control method to generate a quiet zone on a designated area of the target plate is then proposed. Finally, a numerical simulation as well as an experiment using adaptive feedforward control was conducted, demonstrating the validity of the proposed active power flow control.