Nominal Model-Based Control for Permanent Magnet Synchronous Motor

A nonlinear speed controller for permanent magnet synchronous motor (PMSM) was designed to achieve speed tracing control and robust adaptive control. The proposed strategy was composed of nominal model method, backstepping control, sliding mode approach and RBF network approach. The controller included two parts: the model controller and the robust controller. The former was designed to ensure a desired reference output trajectory, and the later was devised to realize the robust control against PMSM parameter variations. A simulation model for the PMSM control system using the designed controller was built. The simulation results show that the controller can achieve fine speed tracing performance and robustness against parameter variations and load torque disturbance.