两种反馈式振动主动控制算法性能比较分析  

Performance Comparison of Two Feedback Active Vibration Control Algorithms

作　　者：刘锦春[1] 何其伟[1] 朱石坚[1] 李海峰[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2015年第2期342-345,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金青年科学基金项目(批准号:51009143);高等学校全国优秀博士学位论文作者专项资金项目(批准号:201057)资助

摘　　要：舰船振源设备由于其特殊环境转速经常发生浮动和变化,导致无法获得较为精确的参考信号.此时,前馈式振动主动控制算法性能严重下降.针对这类问题,在前馈式FXLMS(filter-X least mean square)的主动控制算法的基础上,增加频率估计环节,进行参考信号反馈闭环生成,形成了2种反馈式的振动主动控制算法.对这2种反馈式振动主动控制算法进行了比较,通过仿真分析了这两种算法在参考信号精度不佳情况下的性能差异.研究分析和仿真结果表明,第二种振动主动控制算法计算代价小,而且在振源目标信号信噪比较高的条件下性能与第一种算法性能类似.The unavailability of precise reference signal is commonly encountered in practical implementation of active vibration control due to the environment limitation of the warship.In order to tackle this problem,two algorithms is presented by adding a frequency estimation loop to update the reference signal based on the Feedforward filter-x Least Mean Square algorithm（FXLMS）.The performance comparison of these two feedback algorithm is analyzed in the paper.The property of the algorithms is presented by the simulations.It is derived that the computational requirements of the second algorithm is much less than the first algorithm,although it presents a little performance degradation.Also,the second have similar performance compared to the first algorithm when the signal noise ratio is higher.

关 键 词：FXLMS 主动控制 反馈 

分 类 号：O32[理学—一般力学与力学基础] X966[理学—力学]