In order to solve the problem of chattering in standard sliding mode control of three phase asynchronous motor, this paper proposed a fuzzy logic based sliding mode (FLC SMC) control strategy for induction motor in anti buffeting control.This control strategy created a “sliding surface” base on the system state variables of non continuous function, and introduced the fuzzy logic controller to replace the traditional switching function k1,2sgn〖JB((〗s1,2〖JB))〗, and it used the combined SMC and FLC controller to realize the state smoothly mobiling trajectory along the sliding surface.This paper deduced the SMC control method and also presented the membership functions of FLC controller, according to which it designed the FLC SMC three phase asynchronous motor simulation model.Through the simulation comparison showed, the proposed algorithm has better robustness control for parameters and load torque change, which could effectively to prevent the chattering effect.
