Improvement of motor drive system by nominal model tracking system using hysteresis element

It has been the important subject in automatic control to obtain quick response without overshoot at the step response and good robustness against parameter variation of the control system. In this paper we suggest a method to improve the control characteristics by use of a hysteresis element, and then propose a model tracking system, which is composed of a nominal model including a hysteresis element and a tracking system with a robust compensator. This proposal gives excellent performance even under parameter variation