Low cost resolver system
US6084376A · kind A · utility
35Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K24/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resolver (10) is excited with a high frequency signal from excitation circuit (16). Outputs of the resolver (10) are transmitted through receiver circuit (24) and input to a DSP signal processing circuit (18), which demodulates the sine and cosine outputs to provide samples of the sine and cosine of the rotor position. The sample values are converted to digital values, which are used to calculate a shaft angular position, which is then used for closed loop position and velocity control of a brushless PM motor (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.