Active micro-vibration control based on improved variable step size LMS algorithm  

作　　者：Li Xiangmin Fang Yubin Zhu Xiaojin Huang Yonghui Zhou Yijia 李相敏;Fang Yubin;Zhu Xiaojin;Huang Yonghui;Zhou Yijia(School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200240,P.R.China)

机构地区：[1]School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200240,P.R.China

出　　处：《High Technology Letters》2020年第2期178-187,共10页高技术通讯（英文版）

基　　金：the National Natural Science Foundation of China(No.51575328,61503232).

摘　　要：The contradiction of variable step size least mean square(LMS)algorithm between fast convergence speed and small steady-state error has always existed.So,a new algorithm based on the combination of logarithmic and symbolic function and step size factor is proposed.It establishes a new updating method of step factor that is related to step factor and error signal.This work makes an analysis from 3 aspects:theoretical analysis,theoretical verification and specific experiments.The experimental results show that the proposed algorithm is superior to other variable step size algorithms in convergence speed and steady-state error.

关 键 词：adaptive filtering variable step size least mean square(LMS)algorithm logarithmic and SYMBOLIC functions convergence and STEADY state error ACTIVE CONTROL of micro vibration 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]