Angle detection device
US7692566B2 · kind B2 · utility
3Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2008 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | May 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resolver includes an excitation signal generator which generates a sine wave and a cosine wave as an excitation signal, a rotor which receives the excitation signal, and a rotary transformer which detects an output signal of the rotor, the resolver being arranged to detect angle information of the rotor. The resolver further includes a controller which outputs angle information at a zero cross point of the output signal detected by the rotary transformer. The resolver can provide high detection accuracy and be low in cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.