多线谱振动噪声主动控制中误差传感器的优化配置

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (10) : 175-181.

论文

周刘彬1，刘记心1，杨铁军2

作者信息 +

Optimal allocation of error sensors in multi-curve spectrum active vibration and sound control

ZHOU liubin1 LIU jinxin1 YANG tiejun2

Author information +

文章历史 +

摘要

针对振动主动控制中的误差传感策略问题，改进了现有的传感器优化算法，求解过程采用整数编码和混合编码的遗传算法，在保证整体减振效果基本不变的前提下减少传感器数目并优化其位置，使整个控制系统的规模得到了降低。同时为了消除多通道主动控制时各通道之间的耦合作用，采用FxLMS算法，在浮筏到舱段振动传递途径中安装了4台液压作动器，误差信号同时作为每个作动器的反馈信号，结合提出的误差传感优化策略，对多个激励频率的主动隔振进行了详细的实验研究。实验结果表明，对舱段结构上优选出来的4个误差点进行有效控制后，舱段结构上22个误差点的全局减振效果基本不变，且10个监测用传声器的声压得到了有效的抑制。

Abstract

Aiming at the optimization of sensors’ number and locations in active control of structural response, an existing optimization selection method was improved. The method can effectively reduce the number of sensors and find their relevant optimization locations, at the same time the effect of vibration reduction maintains almost the same as before, and the control scale of hardware can be reduced distinctly. The optimization procedure was resolved with the genetic algorithm. In order to eliminate the coupling between multi-channel in active control, FxLMS algorithm was used. Four hydraulic actuators were placed between the floating raft and the hull structure, and the error signals were used as feedback signals for each actuator simultaneously, while using the improved integer coding genetic algorithm, the experimental research of active vibration isolation of multiple excitation frequencies was studied. Experimental results show that the effect of vibration reduction of 4 error signals maintains almost the same as that of 22 error signals, sound pressure of the 10 monitoring microphones were effectively suppressed.

导出引用

周刘彬1，刘记心1，杨铁军2. 多线谱振动噪声主动控制中误差传感器的优化配置[J]. 振动与冲击, 2017, 36(10): 175-181

ZHOU liubin1 LIU jinxin1 YANG tiejun2. Optimal allocation of error sensors in multi-curve spectrum active vibration and sound control[J]. Journal of Vibration and Shock, 2017, 36(10): 175-181

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