Study of modeling and control of magnetostrictive actuator

Preisach operator is a general mathematical tool for hysteresis modeling. The hysteresis of magnetostrictive actuators is modeled using this operator, and the corresponding numerical formula is presented. For the tracking problem of the actuator, a new control algorithm based on the model linearization is put forward. Simulation and experiment testifies that the model can describe the hysteresis of the actuator, the numerical formula has higher precision, and the control method yields perfect effect. Results show the output error in full range of the model and formula is about 1.2%, and the displacement error of the control method is about 3.4%.