Grey feedback linearization speed control for induction servo motor drive

Abstract

This study mainly focuses on the development of an uncertainty predictor based on the grey theory as a possible solution to improve the shortcoming of the traditional feedback linearization control scheme. Moreover, the newly designed grey feedback linearization control system is implemented for an indirect field-oriented induction servo motor drive to track periodic speed commands. In the proposed control system, a grey uncertainty predictor is designed to adjust the lumped uncertainty existing in the induction servo motor drive into a feedback linearization control law on line. In addition, the effectiveness of the proposed control scheme is verified by both the simulated and experimental results. With the proposed control system, the controlled induction servo motor drive possesses the advantages of good tracking control performance and robustness to uncertainties.