TYPE-2 FUZZY REACHING LAW SPEED CONTROL OF AN ELECTRIC DRIVE

Z.H. Akpolat∗ and A. Altinors∗

Keywords

Type-2 fuzzy logic, sliding mode control, reaching law control, drive control, robust control, speed control

Abstract

In this paper, a new control scheme is described for the robust speed control of electrical drives. The proposed control method is based on type-2 fuzzy logic and Sliding Mode Control (SMC) technique. In the design of the proposed controller, Reaching Law Control (RLC) approach—a SMC design method—is used. Takagi-Sugeno-Kang (TSK) fuzzy system and interval type-2 fuzzy sets are preferred due to their suitability for control applications. Non-singleton fuzzification is employed because of its effectiveness on uncertainties. The control performance is tested under inertial- frictional variations and external load torque disturbances. To show the effectiveness of the new control approach, simulation results of the SMC and type-2 fuzzy SMC (T2FSMC) systems are presented together.

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