System and method for encoder failure detection
US7460030B2 · kind B2 · utility
2Cited by
16References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An encoder failure detector system and method for detecting failure of an encoder during time periods when a zero rotational speed is expected. For example, in one embodiment a test signal is applied during a period when a zero rotational speed is expected and a failure is indicated if no movement of a rotor is detected in response to the test signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.