Magnetoelectronic angle sensor having four retention devices

• Main Authors: VAN TOMME MARC, OCKET TOM, MERTENS GUUS
• Format: Patent
• Language: English
• Published: 07.10.2015
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

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.