主动结构-声系统的鲁棒H_∞控制实验研究

EXPERIMENTAL STUDY ON THE ROBUST H_∞CONTROL FOR ACTIVE STRUCTURAL ACOUSTIC SYSTEM

基于H∞ 控制理论 ,建立了结构振动声辐射鲁棒反馈控制模型 ,利用混合灵敏度设计方法 ,将鲁棒反馈控制器设计问题转化为标准H∞ 控制问题求解。建立了一套以TMS3 2 0C3 0数字信号处理芯片为核心的封闭空间弹性壁振动声辐射鲁棒H∞ 控制实验系统。

Based on the H ∞ control theory,the feedback robust control model of Structural_Acoustic system is presented in the paper.The mixed sensitive design method is used to design the robust H ∞ controller of vibration system.A H ∞ control experimental system for enclosed elastic wall structure is also build up,which is based on the TMS320C30 DSP board.The experimental results show that the sound radiation is reduced effectively in assigned frequency band.