Angular Position Tracking Controller for PMSM Based on Compensated Non- Linearities and Type-Ii Internal Model Control

Abstract

This paper proposes a tracking angular position controller for Permanent Magnet Synchronous Motor (PMSM). Instead of linearizing the dq model of the motor, the proposed approach compensates the non-linear terms of the model in order to use robust linear control techniques. Thus, the control laws are composed by two components: the first term compensate the nonlinearities of the dq model, while the second component is defined by linear controllers to get the desired position and d-axis stator current. A type-II internal model controller is used to control the angular position on the motor. Hence, the motor can track even sinusoidal position references. Simulation and experimental results prove the accuracy of the proposed tracking controller.