Simulation of speed-control system for PMSM based on sliding mode control

In this paper, we research permanent magnet synchronous motor control system through combining the method of rotor field-oriented control and space vector control strategy. Traditionally PI regulator is used in the design of current-control loop, while sliding mode control with an improved exponential reaching law is researched in the speed-control loop. The simulation indicates that the speed control system have excellent static and dynamic performance and robustness in the permanent magnet synchronous motor control system, and the improved exponential reaching law can effectively weaken the tremble produced by sliding mode control.