基于镜像修正FxLMS控制算法的船舶管路振动主动控制  

Active control of ship pipeline vibration based on mirror-modifiedFxLMS control algorithm

作　　者：刘学广[1] 谭鉴 吴牧云 张二宝 闫明 刘济源 LIU Xueguang;TAN Jian;WU Muyun;ZHANG Erbao;YAN Ming;LIU Jiyuan(Power and Energy Source Engineering College,Harbin Engineering University,Harbin 150001,China;Mechanical Engineering Department,University College London,London,WC1E 6BT,England)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001 [2]伦敦大学学院机械工程系,伦敦WC1E 6BT

出　　处：《哈尔滨工程大学学报》2024年第1期77-84,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51775124)。

摘　　要：针对船舶管路减振和抗冲击的需求,本文根据镜像修正自适应滤波算法,设计出了一种管路振动主动控制策略,能够有效地控制管路在低频下的振动,并且在次级通道发生突变时,控制系统可再次快速收敛,进行稳定控制。本文先对镜像修正自适应滤波算法进行理论研究,分析算法的迭代及控制过程;再通过仿真分别验证算法在不同参考信号输入下的收敛性及稳定性;最后搭建实验台架,通过试验验证算法的实际控制效果。试验结果表明:该控制策略在管路振动主动控制中能够降低15.37%的振动强度,比自适应滤波算法控制策略的控制效果好8.85%。所以镜像修正自适应滤波算法能够及时有效地进行管路振动控制。In response to the demand of ship pipelines for vibration damping and shock resistance,an active control strategy for pipeline vibration was designed based on the mirror-modified FxLMS algorithm.Such a strategy can effectively control the vibration of a pipeline at low frequencies,and following a sudden change in the secondary passage,the control system can rapidly converge again for stable control.First,theoretical research was conducted on the MMFxLMS algorithm to analyze the iteration and control of the algorithm,verifying the convergence and stability of the algorithm under different reference signal inputs through simulation.Finally,an experimental bench was constructed to verify the actual control effect of the algorithm through experiments.The experimental results showed that the control strategy can reduce the vibration intensity by 15.37%in the active control of pipeline vibration,8.85%higher than the control effect of the FxLMS control strategy.Therefore,the MMFxLMS algorithm can effectively control pipeline vibration over time.

关 键 词：镜像修正自适应滤波算法 在线辨识 自适应滤波算法 归一化算法 整体建模算法 镜像系统 权向量迭代 振动主动控制 

分 类 号：TB535[理学—物理]