Title:
MAGNETOELECTRONIC ANGLE SENSOR HAVING FOUR RETENTION DEVICES
Document Type and Number:
WIPO Patent Application WO/2014/091032
Kind Code:
A3
Abstract:
The present invention relates to a magnetoelectronic angle sensor having an at least partially ferromagnetic stator and an at least partially ferromagnetic rotor (102) which are opposite each other, with an air gap being formed. The rotor (102) has p lobes which are arranged in such a manner that the magnetic resistance in the air gap changes periodically when the rotor (102) rotates about a rotation axis (106). p is a natural number which is greater than or equal to 2. The stator comprises a stator yoke (104) and teeth (110) which are separated from each other by grooves. There is provided on the stator teeth a magnetic field exciter which produces a predetermined magnetic flux distribution in the air gap and a magnetic flux receiver. The magnetic field exciter may also be provided on the rotor. In addition, the stator has identical retention devices (140) or identical magnetic discontinuities which are distributed in a uniform manner in the peripheral direction of the stator and which are arranged in such a manner with respect to the magnetic field exciter that the signal distortions induced by the retention devices or magnetic discontinuities in the magnetic flux receiver are compensated for / reduced in an output signal of the angle sensor.
Inventors:
OCKET TOM (BE)
MERTENS GUUS (BE)
VAN TOMME MARC (BE)
MERTENS GUUS (BE)
VAN TOMME MARC (BE)
Application Number:
PCT/EP2013/076742
Publication Date:
August 07, 2014
Filing Date:
December 16, 2013
Export Citation:
Assignee:
TYCO ELECTRONICS BELGIUM EC BV (BE)
International Classes:
G01D5/20; G01D5/244; H02K1/14
Domestic Patent References:
| WO2011086021A2 | 2011-07-21 |
Foreign References:
| JP2009098028A | 2009-05-07 | |||
| DE102009061032A1 | 2010-11-18 |
Other References:
NIREI M ET AL: "Angular error analysis of an 8X-VR resolver with an eccentric rotor", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 242-245, 1 April 2002 (2002-04-01), pages 1202 - 1205, XP004360867, ISSN: 0304-8853, DOI: 10.1016/S0304-8853(01)01298-7
Attorney, Agent or Firm:
KUHL, Dietmar (Kinkeldey Stockmair & Schwanhäusse, Leopoldstrasse 4 München, DE)
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