System for determining at least one rotation parameter of a rotating member
US10969252B2 · kind B2 · utility
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18References
9Claims
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Key dates
| Filing date | Sep 12, 2017 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Oct 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/773
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a system having a coder with a magnetic track that exhibits an alternation of North and South magnetic poles separated by i Archimedean spiral transitions. The invention also includes a rotation sensor able to detect the periodic magnetic field emitted by the coder using several sensitive elements, the sensitive elements being distributed angularly along the magnetic track while forming between at least two sensitive elements an angle α which is designed so that the signals delivered by the elements are in quadrature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.