一种改进的MRAS磁链观测与转速估计方法

An Improved MRAS Flux Observer and Speed Estimation Method

基于模型参考自适应(MRAS)转速估计法,为了解决电压模型在电机低速情况下转速估计误差较大等问题,本文提出了一种将电机自身作为参考模型的转速估计方法。通过MATLAB/Simulink仿真,结果表明该方法具有对异步电机参数的变化鲁棒性好,收敛速度快,转速估计精度高的特点。

Based on the model reference adaptive（MRAS）speed estimation method,in order to solve the problem that the speed estimation error of the voltage model is large in the low speed condition of the motor,a speed estimation method which uses the motor itself as a reference model is proposed in this paper. Through MATLAB/Simulink simulation,the results show that the method has the characteristics of good robustness,fast convergence and high precision of speed estimation for asynchronous motor parameters.