基于改进型最小二乘法的感应电机转动惯量辨识  

Identification of Induction Motors Based on Improved Least Square Algorithm

作　　者：刘永钦[1] 沈艳霞[1] 纪志成[1] 

机构地区：[1]江南大学电气自动化研究所,江苏无锡214122

出　　处：《电机与控制应用》2008年第12期13-17,共5页Electric machines & control application

基　　金：江苏省自然科学基金项目(BK2007540)

摘　　要：为减小感应电机转动惯量对机械特性的影响,基于最小二乘法,引入开关控制器,构建了一种新型的最小二乘参数辨识器。当转动惯量发生变化时,通过开关控制对辨识器进行初始化,实现对参数更快更好地在线辨识。仿真试验表明:该方法克服了传统的带遗忘因子的最小二乘辨识器的波动现象,辨识速度快,精度高,可以有效提高系统的性能。To reduce the influence that the variation of the inertia to the mechanical characteristics of induction motor, a new identifier based on the Recursive Least Squares algorithm is proposed. A switch controller is introduced to the Factor Recursive Least Squares（FFRLS） identifier. When the moment of the inertia changes, the switch controller initialize the identifier and realize the quick tracking of the parameter. The simulation and experiments show that this method is free from the fluctuation, the identifying is more quickly and high precision, and is benefit for the improvement of the performance of the system.

关 键 词：感应电机 遗忘因子最小二乘法 参数辨识 转动惯量 

分 类 号：TM346[电气工程—电机]