Method and apparatus for operating a resolver, and resolver device
US10330500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2015 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Feb 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an apparatus (7) for operating a resolver (1), which has at least one receiver winding (3, 4) or at least one excitation winding (2), which are/can be associated with a rotatably mounted shaft (5), in particular a rotor shaft of an electric motor, said apparatus also having a device (9) which determines an angular position of the shaft (5) as a function of an induced voltage detected by the excitation winding (2) by means of a desired excitation signal (SES) with a predeterminable frequency and amplitude and by the receiver winding (3, 4). According to the invention, means (10) for limiting an electrical voltage on the excitation winding (2) are associated with the excitation winding (2), wherein the means (10) limit the voltage only above a maximum normal voltage in only one current direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.