基于声辐射模态的有源控制解耦在固定支承板上的研究

基于声辐射模态的主动控制理论,以固定支承板为例,通过四组作动器在固定支承板上的布放,使其能分别控制不同阶声辐射模态辐射的声功率,来使控制方程解耦,从而设计了比较简单与稳定的单输入/单输出控制系统,模拟计算取得了较好的控制效果。同时本文对控制过程中的溢出等问题进行了一定的探讨。

The decoupling of the active structural acoustic control in a rectangular clamped plate based on the theory of radiation modes

Bathed on the theories of Active Structural Acoustic Control and radiation modes, four groups of actuators are equipped on the clamped plate in a certain form,so each group of the actuators can only reduce the sound power radiated by the corresponding radiation mode of the first four modes.Then the control equations can be decoupled,and a simple and stable control system of single input/output is designed.Numerical examples are given to verify the effectiveness of the present method.Finally,the problem of c...