Modeling and Control of Hysteresis in Magnetostrictive Actuators

X. Tan and J.S. Baras

Automatica, Vol 40, pp. 1469-1480, July 2004.

Abstract

A novel dynamic model is proposed for the hysteresis in magnetostrictive actuators by coupling a Preisach operator to an ordinary di0erential equation, and a parameter identi2cation method is described. An e3cient inversion algorithm for a class of Preisach operators with piecewise uniform density functions is then introduced, based upon which an inverse control scheme for the dynamic hysteresis model is presented. Finally the inversion error is quanti2ed and l1 control theory is applied to improve the robustness of inverse compensation. Simulation and experimental results based on a Terfenol-D actuator are provided.