Robust Control for Magnetostrictive Actuators

Abstract

The hysteresis phenomenon exists in magnetostrictive actuators. When the hysteresis nonlinearity exists in a controlled system, the system usually exhibits inaccuracies or oscillations and even instability due to the undifferentiable and nonmemoryless character of the hysteresis. This paper proposes the robust control in broadband for magnetostrictive actuators, where the hysteresis is described by the Preisach model.