Discrete time sliding mode control of PMSM

In this paper a discrete-time model for Permanent Magnet Synchronous Motor (PMSM) based on the Explicit Euler method is presented. Thus, an advanced application of the discrete variable structure control theory using a discrete time varying sliding surface is designed for the tracking of the rotor velocity. First, modeling and simulation of the PMSM supplied by an inverter is presented. Then, closed loop simulations of the RST control and the discrete time sliding mode control (DSMC) are realized. The obtained results from the two approaches are finally compared in terms of good performances.