Nonlinear Controller design for a Permanent Magnet Synchronous Motor

This paper present a speed control technique for a permanent magnet synchronous motor (PMSM) based on an adaptive backstepping technique. The proposed stabilizing feedback law for the PMSM is shown to be globally asymptotically stable in the context of Lyapunov theory. It takes into account nonlinearities of the system and uncertainties of the parameters. Computer simulations have been carried out in order to validate the effectiveness of the proposed controller. The results show that accurate tracking performance of the PMSM has been achieved.