The hysteresis compensation control of the piezoceramic actuators based on the inverse Preisach model

In order to solve the hysteresis nonlinearity of piezoelectric ceramic actuators, a closed-loop control strategy base on Preisach inverse compensation is proposed in this paper. Firstly, an inverse Preisach model was achieved using the sorting & taxis realization method. And the inverse model was connected in series with the hysteresis of the system to reduce the impact of the hysteresis. Then, a PI controller was designed to attenuate the non-linearity, which could not be compensated by inverse model. Using the designed PI controller, the tracking accuracy could be improved, and the average absolute error decreased to 0.025 μm. Experiments show that the inverse Preisach model control strategy has good control performance.