Electromagnetic method of the angular displacement monitoring
US6393912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/284
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is disclosed for monitoring an angular displacement, such as angle position and the direction of displacement. The method and apparatus includes at least one resonator placed in proximity to a electrodynamic profile and exciting within said resonator an alternating electromagnetic field. The electromagnetic field should be at a frequency at which the electromagnetic field contacts the electrodynamic profile and then variations of the electromagnetic field parameters are measured for the resonator caused by rotating the electrodynamic profile. Excitation of the resonator is by an electromagnetic field in the form of at least one slowed electromagnetic wave having a suitable energy distribution of the electric and magnetic fields for measuring the electromagnetic field parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.