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Finite element modeling of Terfenol-D magneto-mechanical coupling: application to a direct micro-stepping rotary motor

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4 Author(s)
Benbouzid, M.E.H. ; Lab. des Syst. Autom., Univ. de Picardie-Jules Verne, Amiens, France ; Beguenane, R. ; Reyne, G. ; Meunier, G.

Highly magnetostrictive materials such as Tb0.3Dy0.7Fe2, 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 investigate a finite element model on 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 are presented

Published in:

Electric Machines and Drives Conference Record, 1997. IEEE International

Date of Conference:

18-21 May 1997

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