Dynamic hysteresis Preisach model of a piezoceramic actuator based on asymmetric exponential function hysteresis operators

This paper proposed an asymmetric exponential function hysteresis operator, whose shape parameters were related to the input rate, so the shape of the new operator is variable and asymmetric. A dynamic Preisach model was built based on the new operator, and identified by the neural network. The experimental results show that the new dynamic model can describe the dynamic hysteresis of the piezoceramic actuators accurately. Under multi-frequency signals, the mean square error predicted by this new model reduces more than 0.20, and the max absolute error reduce more than 0.84μm, when compared with the double-S function hysteresis model.