J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-785 - Pr2-788
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-785-Pr2-788

DOI: 10.1051/jp4:19982181

CAD of a direct drive rotary motor based on giant magnetostrictive alloys

M.E.H. Benbouzid1, G. Reyne2 and G. Meunier2

1  Laboratoire de Génie des Systèmes Industriels, Université de Picardie Jules Verne, and École Supérieure d'Ingénieurs en Électronique et Électrotechnique, 7 rue du Moulin Neuf, 80000 Amiens, France
2  Laboratoire d'Électrotechnique de Grenoble, INPG/UJF, UMR 5529 du CNRS, BP. 46, 38402 Saint-Martin-d'Hères, France

Highly magnetostrictive materials such as Tb-3Dy7Fe2, commercially known as Terfenol-D, have been used to date in a variety of devices such as high power actuators and linear motors. The authors are investigating a finite element model devoted to Computer Aided Design (CAD) of a direct micro-stepping rotary motor. Such a motor would be a high torque micro-radian stepper, capable of precision movements and self-braking in the power off state. The thrust of this paper is to test the validity of the so-called "weak coupling" approach on a motor based on the proven inch worm technique. Comparison between numerical outputs from the model and test results on prototype hardware will be presented.

© EDP Sciences 1998