基于声辐射模态有源解耦控制的溢出机理研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (3) : 79-83.

论文

基于声辐射模态有源解耦控制的溢出机理研究

田晓光；姜哲

作者信息 +

Research on the mechanism of control spillover of the decoupling of the Active Structural Acoustic Control based on the theory of radiation modes

Tian Xiao-guang，JIANG Zhe

Author information +

文章历史 +

摘要

基于声辐射模态有源控制，通过作动器位置布置可以使得控制过程解耦，通过对比解耦和非解耦两种控制方式，并对其控制结果进行讨论。发现解耦控制所需控制能量较小并且相对控制稳定，比非解耦控制有明显优势。并且两者在低频段都能取得良好的控制效果，在频率较高时出现不同程度的控制溢出。在解耦控制的基础上，通过分析各阶声辐射模态辐射效率特点，作动器布置对称形式与声辐射模态对称形式的对应关系，揭示了溢出的机理。

Abstract

Decoupling control methods can be achieved by arranging the position of the actuator, the control effects of the two control methods are discussed based on the theories of Active Structural Acoustic Control and radiation modes. The decoupling method needs less input control energy and more stable, it has obvious advantages compared with the non-decoupling method. Both of them can achieve well control effect in the low frequency range and occur control spillover in the high frequency range. The mechanism of control spillover is discussed by analyzing the feature of the radiation efficiency of the radiation modal and the correspondence between the symmetrical forms of the actuator positions and the radiation modals.

导出引用

田晓光;姜哲. 基于声辐射模态有源解耦控制的溢出机理研究[J]. 振动与冲击, 2012, 31(3): 79-83

Tian Xiao-guang;JIANG Zhe. Research on the mechanism of control spillover of the decoupling of the Active Structural Acoustic Control based on the theory of radiation modes[J]. Journal of Vibration and Shock, 2012, 31(3): 79-83