Title :
Analysis of a magnetoelastic sensor
Author :
Copeland, Richard L. ; Kopp, Markus ; Handley, R. C O
Author_Institution :
Sensomatic Electronics Corp., Deerfield Beach, FL, USA
fDate :
9/1/1994 12:00:00 AM
Abstract :
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
Keywords :
electric sensing devices; equivalent circuits; finite element analysis; magnetic devices; magnetic field measurement; magnetisation; magnetoelastic effects; 3D magnetostatic finite element model; AC resonance; DC bias magnetization; equation of motion; equivalent circuit model; magnetoelastic sensor; permanent magnet source; solenoidal source; Equations; Finite element methods; Magnetic analysis; Magnetic resonance; Magnetic sensors; Magnetization; Magnetostatics; Motion analysis; Permanent magnets; Sensor phenomena and characterization;
Journal_Title :
Magnetics, IEEE Transactions on
