Active reduction of broadband structural vibraiton and radiated noise using feedback contorl in the acoustic frequeny range

摘要

The aim of the present paper is to demonstrate hte efficiency of feedback contorllers for the actve ocntorl of the structura vibraitons and the acoustic field fradiated by a rectangular panel,using distributed sensors and actuators.HTe general toic of ASAC (Active Strucutral Acoustic Control) has bene of keen interest for numerous reseaarchers in the past 10 or 13 years,but lrelatiely little attention has bene paid to broadband disturbances occurring in a relatively high frquency range.THese are unformately ocmmon features of noise perturbations in relaistic strucutres such as airpolanes or helicopters.HTe feqw articles that deals with this problem provide scarce.if any,experimental results and are related to fruqncy bands where the strcutue dynamics is rather poor.