A novel rotor position detection method of PMSM based on MEMS inertial sensor

This paper proposes a novel rotor position detection Method of permanent magnet synchronous motor (PMSM) based on MEMS inertial sensor, where the MEMS inertial sensor is installed on the shaft of rotor. Firstly, the principle of detecting the rotor position by MEMS inertial sensor is illustrated. Then, in order to avoid the integral error caused by gyroscope, the multi-sensor information fusion scheme based on Kalman filter is proposed for detecting the rotor position when the motor is running. The effectiveness of the proposed method is verified by the experimental results on a 15KW PMSM motor prototype, which show the position detected by MEMS inertial sensor track the actual position accurately.