Switching Gain Adaptive Sliding Mode Model-Following Speed Control of PMSM

This paper aims at increasing the robustness of the PMSM speed system with the parameter variation and load disturbance. A strong robust control strategy named sliding mode model-following control (SMMFC), with the switching gain adaptation, is proposed. The design, stability analysis, simulations and experiments of SMMFC for the practical PMSM speed control system are presented. The experimental results show that the robustness has been improved by sliding mode control, and the chattering has been well suppressed by switching gain adaptation of sliding mode depending on the observed speed output of reference model. Meanwhile the control accuracy has been enhanced by model-following control, and the transient performance can be lightly changed by adjusting the reference model. The speed control performance of PMSM has been improved by the proposed scheme.