Implementation of Fuzzy based on Second Order Sliding Mode Controller fed Induction Motor Drive for Disturbance Rejection Analysis

In this method it shows a unified approach which deals with fuzzy based sliding mode controllers (SMC) is used for Asynchronous drives. In this paper it deeply focuses on the matched and unmatched disturbance and the expressions which will be derived and by using some rules it can be eliminated. By analyzing it shows the basic disadvantage of hysteresis (SM of order one) controllers these limitations can be improved on controllers having higher order. Fuzzy based Second order sliding mode controllers (SOSMC) will be analyzed and the disturbances can be eliminated and system is free from chattering. This shows that the drive having Fuzzy based SOSM controllers regulates the steady switching frequency and they maintain decoupling between torque - flux occurring at the same time. If any disturbances occur by which sudden change in speed and load, or by variations in parameters. The performance of the system which improves the time varying response at high sampling rates with switching frequency constant. The simulations were implemented in Mat lab/Simulink.