Analysis of a magnetoelastic sensor

A brief description of a magnetoelastic sensor is presented. The relationship between ac resonance and dc bias magnetization is explained. A 3D magnetostatic finite element model is used to describe the dc bias magnetization using either a uniform solenoidal or permanent magnet source. An analysis o...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1994-09, Vol.30 (5), p.3399-3402
Main Authors: Copeland, R.L., Kopp, M., O'Handley, R.C.
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Equations
Exact sciences and technology
Finite element methods
Magnetic analysis
Magnetic resonance
Magnetic sensors
Magnetization
Magnetoelectric, magnetostrictive, magnetoacoustic, magnetooptic and magnetothermal devices. Spintronics
Magnetostatics
Motion analysis
Permanent magnets
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensor phenomena and characterization
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Description
Summary:A brief description of a magnetoelastic sensor is presented. The relationship between ac resonance and dc bias magnetization is explained. A 3D magnetostatic finite element model is used to describe the dc bias magnetization using either a uniform solenoidal or permanent magnet source. An analysis of the equation of motion of the magnetoelastic sensor is derived and an equivalent circuit model describing the ac resonance behavior is presented. The results of these models agree well with experimental data.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.312668