Aiming at the errors caused by hysteresis nonlinear effect in the operation of piezoelectric ceramic actuators

a hysteresis compensation control method is proposed. Firstly

for the hysteresis nonlinearity

the corresponding hysteresis model is built based on the PI model

and the inverse model is used to adjust the input voltage of the piezoelectric actuator. Secondly

aiming at the shortcomings of PI model

PID closed-loop control is combined to further compensate the hysteresis error. Finally

the piezoelectric hysteresis compensation control system is built based on LabVIEW FPGA module

and the elliptic vibration trajectory control experiment is studied. The experimental results show that the maximum relative error of the displacement of the piezoelectric actuator under the composite control is less than 3%.