多线谱振动噪声主动控制中误差传感器的优化配置  

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

作　　者：周刘彬 刘记心 杨铁军[2] 

机构地区：[1]武汉第二船舶设计研究院,武汉430205 [2]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《振动与冲击》2017年第10期175-181,189,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51375103;51409199)

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Fx LMS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。Aiming at the optimization of sensors' number and locations in the 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 scale of control hardware can be reduced distinctly.The optimization procedure was resolved with the genetic algorithm.In order to eliminate the coupling effects among multi-channel in active control,the Fx LMS algorithm was used.Four hydraulic actuators were placed between the floating raft and the hull structure.The error signals were used as feedback signals for each actuator simultaneously,and the improved integer coding genetic algorithm was applied.The effect of active vibration isolation at multiple excitation frequencies was studied experimentally.The experimental results show that the vibration reduction effect of 4 error signals maintains almost the same as that of 22 error signals.The sound pressure of the 10 monitoring microphones is effectively suppressed.

关 键 词：误差传感器 优化配置 主动隔振 声辐射 实验研究 

分 类 号：TK05[动力工程及工程热物理]