Research on permanent magnet synchronous motor based on fractional order fuzzy sliding mode control

Abstract

In order to improve the comprehensive control performance of permanent magnet synchronous motor (PMSM) control system, the speed loop used the fractional calculus of speed error. The fractional order integral sliding mode controller is designed in this paper based on the traditional sliding mode control (SMC). and the boundary layer method is introduced to solve the chattering problem existing in the traditional sliding mode control. At the same time, the fuzzy controller is used to adjust the coefficients in front of the saturation function of the fractional order sliding mode controller(FOSMC), so as to effectively weaken the chattering phenomenon of sliding surface and improve the comprehensive performance of the system. MATLAB simulation results show that the PMSM fractional order fuzzy sliding mode control (FOFSMC) system can weaken the chattering problems and has strong robustness.