Angle sensor with inductive coil coupling
US4829247A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K24/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An angle sensor (1) with a rotatably arranged transmitter part (5) and a fixed transmitter part (9). The rotatable transmitter part (5) has a coil (10) which can be connected to a source of alternating current, is wound helically on a support and extends on both sides of an axis of rotation (53) with longitudinal axis extending transverse to it. The fixed receiver part (9) contains at least one sensor for electromagnetic fields which is arranged facing and spaced from the coil (10). The sensor extends on both sides of the axis of rotation (53) transverse to it and is connected on the output side to a circuit which has circuit components (22, 23, 24, 25, 26) for compensating for the deviations of the output signal or signals of the stationary receiver part (9) from a fixed relationship of the angular position of the rotatable transmitter part (5) and the output signal or signals of the stationary receiver part (9) which are caused by asymmetries or inaccuracies in the arrangement of the transmitter and receiver parts (5, 9).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.