Composite adaptive position controller for induction motor using feedback linearisation

A new adaptive control technique is proposed to control the position of the induction motor. First, the rotor flux is estimated with the simplified rotor flux observer on the rotor reference frame and the feedback linearisation theory is used to decouple the rotor position and the flux amplitude. Then, a new composite adaptive control algorithm based on an integral cost function is designed to control the position of the induction motor. The overall position control system is verified to be stable and robust to the parameter variations and external disturbances. Experimental results are provided to demonstrate the effectiveness of the presented approach. The good position tracking and load regulating responses can be obtained by the proposed controller