Encoder failure detection
US7178412B2 · kind B2 · utility
4Cited by
12References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Sep 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An encoder failure detector system and method for detecting failure of an encoder at near-zero rotational speeds. For example, in one embodiment a failure is indicated if a torque command exceeds a selected threshold for a selected period of time and no movement of a rotor is detected during the selected period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.