异步电机调速系统转速辨识的研究  

Study on Rotor Speed Identification in Asynchronous Motor Speed Control System

作　　者：顾美华[1] 林金星[1] 

机构地区：[1]南京邮电大学自动化学院,南京江苏210023

出　　处：《计算机仿真》2015年第5期350-353,共4页Computer Simulation

基　　金：江苏省基础研究计划(自然科学基金)资助项目(BK20141430);国家自然科学基金(61304106)

摘　　要：针对异步电机转速辨识过程存在积分初始值误差和直流偏置问题,为提高无速度传感器异步电机调速系统中转速观测值的准确性,采用一种以反电动势为电机输出量的模型参考自适应系统(MRAS)法。基于MATLAB/SIMULINK平台,对以转子磁链和反电动势作为电机输出量的MBAS法进行建模与仿真研究。仿真结果表明,基于反电动势的MRAS法比基于转子磁链的MRAS法能准确有效地辨识电机的实际速度,更能满足现代电机调速系统的性能要求。In order to overcome integral initial value error and DC offset problem in the speed identification process and improve the accuracy of speed observations in speed sensorless asynchronous motor speed control system, this paper adopts a counter electromotive force as the motor output of Model Reference Adaptive System （MRAS） method. Based on MATLAB/SIMULINK platform, the MRAS with the rotor flux and the counter electromotive force as a motor output is modeled and simulated. The simulation results show that the proposed method of MRAS based on the counter electromotive force can identify the speed of motor more accurately and effectively than the method of MRAS based on rotor flux.

关 键 词：无速度传感器 模型参考自适应系统 反电动势 转速辨识 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]