Title :
Precise multipole magnetization of disc magnet for sensor application
Author_Institution :
Magnequench Technol. Center, Res. Triangle Park, NC, USA
Abstract :
This paper describes the pulse magnetization of an isotropic permanent magnet disc to provide a precise multiple structure with different magnet pole widths. The magnetization problem coupled with the discharge electrical circuit is solved for different cross sections of the magnet located in the magnetizing fixture. The magnetization vector then is imported into the static model of a sensor magnet. Based on finite-element analysis (FEA) the magnetizing fixture has been built and tested. The flux measurement shows that the precision of magnetization is in the range of ±0.5°.
Keywords :
finite element analysis; magnetic sensors; magnetisation; permanent magnet machines; permanent magnets; different cross sections; different magnet pole widths; disc magnet; discharge electrical circuit; finite-element analysis; isotropic permanent magnet disc; magnetization vector; precise multiple structure; precise multipole magnetization; pulse magnetization; sensor application; the magnetizing fixture; Coupling circuits; Fault location; Fixtures; Magnetic circuits; Magnetic flux; Magnetic sensors; Magnetization; Permanent magnets; Space vector pulse width modulation; Structural discs;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816752
