Application and Research of the Internal Model Decoupling Control in the PMSM Speed Control System

In the speed control system of the permanent magnet synchronous motor,the motor always has some unfavorable properties such as nonlinearity,variability of parameters and strong-coupling.The Conventional PID control can not complete coupling dynamically and some methods of decoupling are sensitive to parameters.The internal model decoupling control was introduced,and the dynamic decoupling can be realized through internal model control with this method.The simulation results show that:With this control method,the system control performance was improved and the control quality was more better.