基于IIR结构的自适应滤波振动主动控制方法  

Adaptive Filtering Active Vibration Control Method Based on IIR Structure

作　　者：黄全振[1,2] 吕宽洲[1] 李恒宇[2] 王小华[2] 

机构地区：[1]河南工程学院电气信息工程学院,郑州451191 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《振动．测试与诊断》2014年第3期439-446,587,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金重点资助项目(61233010);国家自然科学基金资助项目(61305106;61104006;11202121);中国博士后科学基金资助项目(2013M541505);河南省教育厅科学技术研究重点资助项目(14A413003);上海市机械自动化及机器人重点实验室开放基金资助项目(ZK1301)

摘　　要：当前自适应滤波前馈控制方法中具有代表性的是滤波-X最小均方(filtered-X least mean square,简称FXLMS)算法,它通常假定干扰源可测且作为前馈控制器的参考输入,但实际振动控制过程中需要考虑控制输出反馈信号对参考信号的影响,因此滤波-X算法面向实际应用具有较大的局限性。针对这一问题,以机敏压电太阳能帆板结构为模拟试验对象,提出一种基于IIR(infinite impulse response,简称IIR)结构的滤波-U最小均方(filtered-U least mean square,简称FULMS)自适应滤波控制方法,着重分析了控制器结构设计、FULMS算法推理过程、试验模型结构设计、试验平台的构建及其试验验证等环节。经过与FXLMS算法对比仿真试验,笔者所设计的控制算法控制效果良好。将其进行试验验证分析,结果表明,所采用的控制器设计方法与控制算法收敛速度快,控制效果好,为自适应振动控制方法向实际工程应用提供了较好的研究基础。The filtered-X least-mean-square(FXLMS)algorithm is the most popular method in adaptive filtering feed-forward control.While it is usually assumed that the interference source is tested as a reference input of the feed-forward controller,in the actual control process,it is necessary to consider the influence of the output feedback signal on a reference signal.The filtered-X algorithm thus has greater limitations in its practical application.To solve this problem,a filter-U least-mean-square(FULMS)adaptive control method based on IIR is proposed using smart solar piezoelectric structures as simulation objects.Further,we analyze such elements as the controller structure design,reasoning process FULMS algorithm,structure design of the test model,construction of the experiment platform,and experiment verification.The simulation experiments compare the FULMS control method with the FXLMS method.Results show that the control effect of the FULMS method is better,and the adopted controller design methods and control algorithms have a quick convergence speed.The FULMS method provides better research for an adaptive vibration control method in practical engineering applications.

关 键 词：IIR结构 自适应滤波控制 振动主动控制 多输入多输出方式 压电智能柔性板 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置] TB535[自动化与计算机技术—控制科学与工程]