Patent · US Active

Sensor devices and methods for determining a rotation angle of a magnet

US11885648B2 · kind B2 · utility

0Cited by

1References

25Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Joo II Park · Yeoksam-dong, KR
Richard Heinz · Munich, DE
Hyun Jeong Kim · Hwaseong-si, KR
Stephan LEISENHEIMER · Deisenhofen, DE
Severin NEUNER · Valley, DE

Key dates

Filing date	Jul 14, 2022
Grant date	Jan 30, 2024
Priority date	—
Expiry date	Jul 14, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01D3/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining a rotation angle of a magnet includes measuring a 3D magnetic field vector of a magnetic field generated by the magnet, wherein the 3D magnetic field vector describes at least a part of an ellipse in 3D space during a rotational movement of the magnet. The method further includes mapping the measured 3D magnetic field vector to a 2D vector based on a compensation mapping, wherein the compensation mapping is configured to map the ellipse in 3D space to a circle in 2D space. The method further includes determining the rotation angle of the magnet based on the 2D vector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.