Vector Control of Active Disturbance Rejection Induction Motor based on Sliding Mode Variable Structure

Aiming at the problems of coupling and chattering in the actual operation of induction motor, a composite control strategy based on sliding mode variable structure active disturbance rejection control is proposed. Firstly, the mathematical model of induction motor under vector control is established. By selecting reasonable state variables and using the idea of disturbance compensation in active disturbance rejection technology, the SMADRC controller of induction motor speed loop is designed. The controller not only retains the strong robustness of traditional sliding mode, but also effectively weakens the motor chattering problem through compensation. Finally, the feasibility and correctness of the control strategy are verified by numerical simulation