摘要：根据异步电动机矢量控制原理，本文以两相旋转坐标系电流模型作为可调模型，电压模型为参考模型，构建无速度传感器矢量控制系统。采用模型参考自适应(MRAS，model reference adaptive system)方法对系统进行速度估算，并且在Matlab/Simulink仿真环境下进行实验研究。实验结果表明，所采取的方法能够实时对电机转速进行辨识和估算，使电机转速、电流闭环调速系统具有良好的动态特性。

关键词：矢量控制；模型参考自适应；转速估算

Abstract: According to the vector control principle of asynchronous motor, a speed sensorless vector control system is constructed by using the current model as the adjustable model and the voltage model as the reference