Title:
AMR ARRAY MAGNETIC DESIGN FOR IMPROVED SENSOR FLEXIBILITY AND IMPROVED AIR GAP PERFORMANCE
Document Type and Number:
WIPO Patent Application WO/2010/005688
Kind Code:
A3
Abstract:
An AMR array magnetic position sensing system for improved sensor flexibility and improved air gap performance is disclosed. A pair of magnets can be enclosed in a magnet carrier that moves along a path and located above an array of AMR position sensors. The magnets are generally magnetized through the length of the magnets, and the magnets are positioned in the carrier such that an angle between the magnets exists in a manner similar to an angle made by AMR runners on a surface of the AMR positions sensors to create magnetic flux lines thereof. The AMR position sensors come into contact with the uniform magnetic flux lines to sense a change in linear and angular position associated with the magnet carrier. The output signal generated by the AMR position sensors have less susceptibility to variations in air gap as the angles of the magnetic flux lines generated by the magnets do note change with respect to air gap variation.
Inventors:
DMYTRIW ANTHONY (US)
VAN OSTRAND KENT E (US)
VAN OSTRAND KENT E (US)
Application Number:
PCT/US2009/047294
Publication Date:
March 18, 2010
Filing Date:
June 14, 2009
Export Citation:
Assignee:
HONEYWELL INT INC (US)
DMYTRIW ANTHONY (US)
VAN OSTRAND KENT E (US)
DMYTRIW ANTHONY (US)
VAN OSTRAND KENT E (US)
International Classes:
G01R33/09; G01B7/00
Foreign References:
| US6806702B2 | 2004-10-19 | |||
| JPH06137809A | 1994-05-20 | |||
| KR20070114314A | 2007-11-30 |
Other References:
See also references of EP 2288926A4
Attorney, Agent or Firm:
BEATUS, Carrie (Law Department AB/2B101 Columbia Roa, Morristown NJ, US)
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