John S. Baras


Modeling and control of a magnetostrictive actuator

X. Tan and Baras, J.S.

41st IEEE Conference on Decision and Control, Las Vegas, December 10-13, 2002.

Full-text article [ PDF]


The rate-dependent hysteresis existing in magnetostrictive actuators presents a challenge in control of these actuators. In this paper we propose a novel dynamical model for the hysteresis in a thin magnetostrictive actuator. The model features the coupling of the Preisach operator with an ordinary differential equation (ODE). We prove the well-posedness of the model, study the parameter identification methods, and propose an inverse control scheme. The effectiveness of the identification and inverse control schemes is demonstrated through experimental results.

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