Magnetic force control based on the inverse magnetostrictive effect

We describe a novel magnetic force control method. The method employs a mechanical stress applied to a magnetostrictive material to control the attractive force between fixed and movable members of a magnetic circuit that includes a permanent magnet. The method has the advantage over electromagnet c...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2004-05, Vol.40 (3), p.1601-1605
Main Authors: Ueno, T., Jinhao Qiu, Tani, J.
Format: Article
Language:English
Subjects:
Applied classical electromagnetism
Applied sciences
Electric motors
Electrical engineering. Electrical power engineering
Electrical machines
Electromagnetism
electron and ion optics
Electromagnets
Energy consumption
Exact sciences and technology
Force control
Fundamental areas of phenomenology (including applications)
Magnetic analysis
Magnetic circuits
Magnetic forces
Magnetic materials
Magnetism
Magnetostatics
magnetic shielding, magnetic induction, boundary-value problems
Magnetostriction
Permanent magnets
Physics
Stress control
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Description
Summary:We describe a novel magnetic force control method. The method employs a mechanical stress applied to a magnetostrictive material to control the attractive force between fixed and movable members of a magnetic circuit that includes a permanent magnet. The method has the advantage over electromagnet control that a constant force can be maintained without energy consumption. We discuss the variation of the magnetic force with compression of several magnetostrictive materials. The experimental results agree with theoretical predictions of magnetic force based on analysis of an equivalent magnetic circuit and the piezomagnetic properties of the magnetostrictive materials.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2004.826626