Power steering apparatus having failure detection device for rotation angle sensors
US7743875B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 25, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jan 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.