Research on Adaptive Fuzzy PI-Sliding mode Control Strategy of Permanent Magnet Synchronous Motor in CNC

An adaptive fuzzy PI-sliding mode control(AFPISMC) Strategy is proposed for permanent magnet synchronous motor(PMSM) which is a multivariable,nonlinear,forceful coupled object,which combines the merits of sliding-mode control(SMC),the fuzzy inference mechanism and the adaptive algorithm.SMC has good robustness with regard to parameter variation and external disturbance.Adaptive fuzzy PI mechanism is used to approximate the discontinuous control,to attenuate chattering effectively.The analysis of simulations reveals the effectiveness of the proposed method.