다채널 제어 알고리듬을 이용한 음향가진된 밀폐계 평판의 능동진동 제어

Abstract

This paper presents the multi-channel active vibration control of a flexible plate of the acoustically loaded enclosure. The flexible plate was excited acoustically with sinusoidal and white noise input The control was perfonnod by two piezo ceramic actuators and two accelerometers. The experimental results were compared with the single channel control results. In the case of white noise input, 20 dB of vibration reduction was achieved below 300Hz frequency range. The experimental results demonstrate that multi-channcl filtcred-x LMS algorithm is effective than smgle*channel filtcred-x LMS algorithm in active vibration control of plate.