无轴承开关磁阻电动机转子偏心补偿控制  

Rotor Eccentricity Compensation of Bearingless Switched Reluctance Motors

作　　者：张倩影[1] 邓智泉[1] 杨艳[1] 王晓琳[1] 

机构地区：[1]南京航空航天大学,江苏南京210016

出　　处：《微特电机》2010年第6期53-57,68,共6页Small & Special Electrical Machines

基　　金：航空基础科学基金(05F52040)

摘　　要：分析了无轴承开关磁阻电动机不平衡振动的特点,提出采用自适应LMS滤波器用于无轴承开关磁阻电动机转子偏心补偿控制的方法。针对固定步长自适应LMS滤波器存在收敛速度和稳态误差之间矛盾的问题,采用了基于S igmoid函数、基于箕舌线和基于抽样函数的三种改进的变步长自适应LMS滤波器对悬浮转子进行补偿控制。仿真结果表明:自适应LMS滤波器可以有效抑制转子的不平衡振动;变步长自适应LMS滤波器不仅具有较快的收敛速度和跟踪速度,稳态误差也能控制在比较小的范围内;基于抽样函数的变步长LMS算法具有更小的稳态误差。Characteristics of unbalance vibration in switched reluctance motors were analyzed and adaptive filtering LMS algorithm was proposed to compensate rotor eccentricity.In allusion to the contradiction between convergence rate and stable error of the fixed step adaptive filtering LMS algorithm,three variable step adaptive filtering LMS algorithms were adopted respectively based on Sigmoid function,Tongue-like curve and sampling function.Simulation models were built up respectively and compensation performances of each algorithm were compared.The results show that adaptive filtering LMS algorithm can compensate rotor eccentricity effectively.Variable step adaptive filtering LMS algorithms make the system convergent rapidly,and the stable errors are small.The improved LMS algorithm based on the sampling function obtains the smallest stable error.

关 键 词：无轴承开关磁阻电动机 偏心补偿 自适应滤波 LMS算法 变步长 

分 类 号：TM352[电气工程—电机]