Abstract

A high-performance adaptive speed controller for an induction motor with input-output linearization is proposed in this paper. The rotor flux is estimated using the rotor flux estimator in the rotor reference frame and the input-output linearization theory is used to decouple the rotor flux and the motor speed. Then, an integral cost function minimized by the least-squares method is proposed to design a high-performance adaptive speed controller. The overall speed control system is proved to be stable and robust to the parameter variations and external disturbances. Some experimental results are presented to demonstrate the effectiveness of the proposed adaptive speed controller. Good speed tracking and load regulating responses can be achieved by the proposed adaptive speed controller.

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