Method and apparatus for contactless detection of the rotational angle of a rotatable element
US7589522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Nov 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2013
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a device and a method for determining the rotational angle of a rotatable element in a non-contact manner, the device including at least one magnetoresistive sensor element which emits at least one first signal for determining a rotational angle of the rotatable element in a first region. A plunger core and a coil move in relation to each other in the axial direction of a shaft according to the rotary movement of the shaft, the coil emitting another signal relating to the modification of the coil inductance, such that rotational angles beyond the first region can be clearly determined in association with the first signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.