High Order Observer with Integral Sliding Mode Controller for Permanent Magnet Synchronous Motor

In this paper, high order observer (HOO) and integral sliding mode controller (ISMC) are studied in the system of permanent magnet synchronous motor (PMSM) with the uncertainty disturbance. The system is divided into two loops: current loop and speed loop for ISMC and HOO. HOO can get the estimated value of external interference and the uncertain parameters’ disturbance. The estimated value got from HOO will also be accurate because of the high-order characteristic of HOO. ISMC with the estimated disturbance has better robust and performance. The simulations prove the effectiveness of the ISMC and HOO.