Rotation detecting device and correction method therefor
US10890464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2017 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Aug 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotation detecting device includes first and second magnetic detection elements that output first and second signals and a detection circuit having the first and second signals input thereto. The detection circuit includes an automatic correction circuit that performs generating and updating of a correction value for correcting the and second signals. The automatic correction circuit is configured to stop the generating or the updating of the correction value in at least one of a case where a rotation direction of an object is changed to a reverse rotation direction from a normal rotation direction and a case where a rotation direction of the object is changed to the normal rotation direction from the reverse rotation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.