Rotor Speed and Rotor Position Estimation Based on MRAS

In the traditional mechanical equipment, the motor is generally equipped with sensors for measuring the speed and position information of the motor. However, installation of sensors increases the structure burden. In this paper, a sensorless method is proposed for measurement of rotor speed and position. The proposed method is MRAS. It can quickly detect the rotor position information and speed information. As the speed increases and the speed estimation error gradually decreases after stable operation, the estimation error of the rotor position also gradually decreases.