Sliding mode control of hysteresis nonlinear system based on inverse compensation

In order to reduce the hysteresis nonlinearity of system, a control scheme of sliding mode based on a hysteretic inverse operator is proposed in this paper. At first, a operator that is able to describe the character of hysteresis is brought in and a dynamic hysteresis model is established combined with a linear system. Then, the hysteretic inverse operator added in control system to compensate for the impact of hysteresis. Besides, a sliding mode controller is designed. Finally, the application of this control scheme in simulation experiments is studied and the results of comparing with PID control scheme show the sliding mode control scheme with inverse compensation can offer a good tracking accuracy.