基于MRAS的永磁同步电机无传感器矢量控制研究

摘要

A method of reference adaptive control theory (MRAS) to estimate the speed and position of the motor was presented.PMSM as the reference model,the stator current equation with variable speed as the adjustable model.Popov stability theory as a basis to design adaptive rate,when the adjustable model was equivalent to the reference model,speed estimation s equivalent to the true value.The simulation model was built by MATLAB/ Simulink,and the simulation results showed that the sensorless control based on MRAS had a good recognition effect.%提出了一种基于模型参考自适应理论(MRAS)的速度与位置估算方法.以PMSM本身作为参考模型,以含有转速变量的定子电流方程作为可调模型,以Popov超稳定性理论为基础设计自适应律,当可调模型等效于参考模型时,输出的估计转速收敛于真实值,实现了无速度传感器的电机控制.利用MATLAB/Simulink搭建了仿真模型,仿真结果表明基于MRAS的无传感器控制对转速和转子位置角有很好的辨识效果.