Journal
AUTOMATICA
Volume 40, Issue 9, Pages 1469-1480Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2004.04.006
Keywords
hysteresis; magnetostrictive actuator; Preisach operator; inverse compensation; robust control
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A novel dynamic model is proposed for the hysteresis in magnetostrictive actuators by coupling a Preisach operator to an ordinary differential equation, and a parameter identification method is described. An efficient 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 quantified and l(1) control theory is applied to improve the robustness of inverse compensation. Simulation and experimental results based on a Terfenol-D actuator are provided. (C) 2004 Elsevier Ltd. All rights reserved.
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