公开(公告)号：US20240133714A1

公开(公告)日：2024-04-25

申请号：US18377001

申请日：2023-10-05

Applicant: TDK - Micronas GmbH

Inventor： Jörg Franke ,  Timo Kaufmann ,  Johannes Gutmann

IPC: G01D5/16 ,  G01B7/30

CPC classification number: G01D5/16 ,  G01B7/30

Abstract: A device for determining an encoder magnet rotation angle is provided, wherein the device includes an encoder magnet and a number of n greater than or equal to two magnet sensors. The magnetic field includes a plurality of plane-parallel magnetic field planes, wherein a surface normal of the plane-parallel magnetic field planes is parallel to an encoder magnet rotation axis. The magnetic field further includes a plurality of magnetic field vectors in the plane-parallel magnetic field planes. The two magnet sensors are in at least one of the plane-parallel magnetic field planes, wherein a first magnetic field vector has a first angle at a position of a first magnet sensor, and wherein a number n−1 of further ones of the magnet sensors are arranged at positions in the magnetic field whose magnetic field vectors have an angle which satisfies the equation






θ
i

=


θ

i
-
1


+


360
⁢
°

n



,




wherein 1

公开(公告)号：US20240118354A1

公开(公告)日：2024-04-11

申请号：US18376886

申请日：2023-10-05

Applicant: TDK - Micronas GmbH

Inventor： Jörg Franke ,  David Muthers

IPC: G01R33/09

CPC classification number: G01R33/09

Abstract: A device and a method for compensating a harmonic in an output voltage of at least one xMR sensor assembly is provided. The device includes the at least one xMR sensor assembly including at least one magnetoresistive element, at least one excitation magnet, at least one demodulation unit, a scaling unit and a superposing unit. The method includes detecting the output voltage of the at least one xMR sensor assembly in a demodulation unit, converting the output voltage of the at least one xMR sensor assembly in the demodulation unit, generating a compensation voltage from the demodulation voltage in a scaling unit, and superposing the compensation voltage with the output voltage of the at least one xMR sensor assembly in a superposing unit.

公开(公告)号：US20220128633A1

公开(公告)日：2022-04-28

申请号：US17573717

申请日：2022-01-12

Applicant: TDK - Micronas GmbH

Inventor： Jörg Franke

IPC: G01R33/00 ,  H01F5/04 ,  G01D5/14

Abstract: A sensor device (10) is described. The sensor device (10) comprises a laterally arranged double coil (20) with a first coil (30a) and a second coil (30b), wherein first windings (40a) of the first coil (30a) and second windings (40b) of the second coil (40b) are arranged in a spiral shape. The first windings (40a) from a first center point (50a) lead to a common region (60) and the second windings (40b) from a second center point (50b) lead to the common region (60) as well. A plurality of magnetic field sensor (70, 72a, 72b) is disposed on the laterally arranged double coil (20), wherein the plurality of magnetic field sensors are an interconnection of a plurality of individual sensors, and wherein the plurality of magnetic field sensors are at least four TMR elements in a Wheatstone Bridge or four Hall elements connected in parallel

公开(公告)号：US20200241083A1

公开(公告)日：2020-07-30

申请号：US16750748

申请日：2020-01-23

Applicant: TDK - Micronas GmbH

Inventor： Jörg Franke

IPC: G01R33/00 ,  G01D5/14 ,  H01F5/04

Abstract: A sensor device (10) is described. The sensor device (10) comprises a laterally arranged double coil (20) with a first coil (30a) and a second coil (30b), wherein first windings (40a) of the first coil (30a) and second windings (40b) of the second coil (40b) are arranged in a spiral shape. The first windings (40a) from a first center point (50a) lead to a common region (60) and the second windings (40b) from a second center point (50b) lead to the common region (60) as well. At least one magnetic field sensor (70, 72a, 72b) is disposed on the laterally arranged double coil (20).