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Modélisation des Alliages à Mémoire de Forme Magnétiques pour la conversion d'énergie dans les actionneurs et leur commande.

Abstract : In the mechatronics field, smart materials use is in continuous evolution because of the coming of new materials always more efficient. Magnetic Shape Memory Alloys (MSMAs) are active materials relatively recently discovered which present strain of 6 to 10 % under a magnetic field action. Because of their fast actuation and high strain, these alloys are good candidates for new actuators design. However, nonlinear behavior and hysteresis have to be taken into account in the design stage and the control development to increase the characteristics of the new systems. In this thesis, we propose a modeling of MSMA based on the thermodynamics of irreversible processes with internal variables. It takes into account the magnetic and mechanical applied fields including temperature effects. Nonlinear dynamic modeling of systems using MSMA is also developed through lagrangian and hamiltonian formalisms. These energetic models help us to propose new actuator structures and new hybrid controllers well suited for the dynamic hysteretic behavior of this kind of actuators. Theoretical results of these studies are validated by prototypes builing and experimental test benches.
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https://tel.archives-ouvertes.fr/tel-00258807
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Submitted on : Monday, February 25, 2008 - 2:52:49 PM
Last modification on : Thursday, January 17, 2019 - 4:42:03 PM
Document(s) archivé(s) le : Thursday, May 20, 2010 - 11:32:57 PM

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  • HAL Id : tel-00258807, version 1

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Jean-Yves Gauthier. Modélisation des Alliages à Mémoire de Forme Magnétiques pour la conversion d'énergie dans les actionneurs et leur commande.. Automatique / Robotique. Université de Franche-Comté, 2007. Français. ⟨tel-00258807⟩

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