Model identification and controller design on piezoelectric ceramics actuator

In this paper, the identification method of the piezoelectric ceramics model is put forward. Firstly Prandtl-lshlinskii model of hysteresis of piezoelectric ceramics is built, and basic creep superposition operator of creep model is identified on the creep features of piezoelectric ceramics. Secondly, the combination model of hysteresis and creep were got. Finally, an adaptive inverse controller is designed based on the hysteresis and creep model of piezoelectric ceramics actuator. The simulation results show that the correctness of the mathematical model and the feasibility of inverse controller designed, which lays a good foundation for the further research and application of piezoelectric ceramic actuator.