Electromagnetic apparatus for measuring angular position
US7583090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is disclosed for measuring a variable angular position of a movable part. The apparatus comprises at least two resonators formed by coupled slow-wave structures, and at least two movable targets having electrodynamic profiles, the targets also having a variable angular position. The angular position of the target is representative of the angular position of the movable part. An electromagnetic field is excited in the resonators at a frequency at which electromagnetic parameters of the resonators depend upon the position of the targets. A change in the angular position of the targets therefore causes a change in electrodynamic parameters of the resonators. The change in the electrodynamic parameters of the resonators is converted into a reading, such as an output voltage, which is indicative of the measured angular position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.