Failure detection system for electric power steering system
US6995567B2 · kind B2 · utility
6Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2004 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Aug 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0487
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a failure detection system for an electric power steering system. The system detects ON failure of one of first to fourth switching elements of an H-bridge circuit of the electric power steering system. The system detects ON failure by measuring the value of the current and the fluctuation in the value of the current. Therefore, the system can detect ON failures even when the value of the current is within normal ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.