Switched reluctance angular velocity sensor
US5574361A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Dec 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bearing assembly for a vehicle including a fixed element, a rotating element rotating relative to the fixed element about an axis, and an annular sensor connected to one of the fixed element and the rotating element. The sensor includes a pick-up coil and an annular magnet connected to the pick-up coil. The magnet has a plurality of magnetic regions which alternate in polarity around the magnet. The magnet generates a magnetic flux path magnetically coupling the magnet to the coil and resulting in the generation of an electrical signal in the coil. The rotating bearing element includes a plurality of gear teeth. The gear teeth generate a change in the reluctance of the magnetic flux path to vary the electrical signal in response to the angular speed of the fixed element relative to the rotating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.