Rotation angle detecting device with a selecting means for selecting a pair of output signals of the magneto-sensing elements
US7671585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Aug 27, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotation angle detecting device includes a magnetic field forming member, magneto-sensing IC circuit including first and second sensing sections in a magnetic field to have a first preset angle between them, and a selecting circuit. One of the first and second sensing section includes plural magneto-sensing elements whose sensing surfaces face in directions different from one another by a second preset angle. When the magnetic field forming member rotates relative to the magneto-sensing means, the magneto-sensing elements respectively provide the output signals. The selecting circuit selects a pair of the output signals of the magneto-sensing elements that is closest to a preset phase difference angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.