Encoder for a position sensor with a stabilizing effect for the passing through zero of the magnetic induction
US7388368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2007 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | May 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The object of the invention relates to an encoder for a position sensor, including at least one junction (J) between one so-called small pole (P) and one so-called large pole (G), having an angular width larger than the angular width of the small pole, the small pole (P) and the large pole (G) corresponding to each junction (J) having polarities of opposite signs, characterized in that, for each junction (J), the large pole (G) of a given sign consists: of at least one small stabilizing pole (ps) of the same sign placed adjacent to the small pole (P) of opposite sign and having an angular width substantially identical with that of said first pole, one the one hand and of at least one complementary pole (pc) of the same sign as the stabilizing pole (ps), the complementary pole (pc) and/or the small stabilizing pole (ps) having a gradual magnetization profile adapted for stabilizing the passing through zero gauss of the radial component of the magnetic induction, on the other hand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.