摘  要：为了改善异步电机低速时磁链的畸变和运行特性，依据模型参考自适应系统原理（MRAS）设计了一种新颖的速度磁链自适应观测器，并通过对G矩阵的选择配置观测器极点。观测器以定子电流和定子磁链为状态变量，利用速度自适应律，把磁链观测与速度辨识结合起来，应用于异步电机无速度传感器矢量控制中。仿真和实验结果表明，估算转速跟踪真实转速快速、准确，建立的模型合理、有效，为交流异步电机控制系统的设计与调试提供了新的思路。
关键词：异步电机；模型参考自适应系统；极点配置；建模与仿真

Abstract: In order to improve the flux aberration and running characteristics of the rotor,designed a new speedadaptive flux observer based on a model reference self-adaptive system theory(MRAS)in this paper.It collocated full-order observer poles by the means of choosing G matrix.The observer used the stator current and stator flux as state variables and combined flux observation with speed estimating by using the speed adaptive law.It was used in the speed sensorless vector control of asynchronous motor.The simulation results indicated that the speed estimate was quick and accurate.The model testified in reasonability and validity.This method offers a new idea for the designing and debugging asynchronous motor.
Key Words: Asynchronous motor；Model reference self-adaptive system; Pole collocating;Modeling and simulation