SYNTHESIS METHOD AND ROBUSTNESS OF SLIDING MODE OBSERVERS OF INDUCTION MOTOR’S FLUX

The synthesis method of generalized observer of rotor flux vector of induction motor that generates a family of sliding mode observers is presented. The synthesis procedure is based on Lyapunov’s second method and the equivalent control method. The analytic research of robustness of observers to variations of rotor resistance of induction motor is performed based on their generic structure. A comparative robustness analysis of the generic flux sliding mode observers is given.