Method and device for rear-wheel steering of automotive vehicle
US5014801A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Feb 9, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/1581
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In an automotive four-wheel steering system having a control unit for operating in response to various sensors associated with the front-wheel and rear-wheel steering systems to control the steering of the rear wheels. The control unit includes a first sensor for detecting front-wheel steering force or front-wheel assist (power) steering force, or cornering force occurring in the front wheels, a second sensor for detecting front-wheel steering speed, and a sensor abnormality determination device for operating, when a difference occurs between the values detected by the first sensor and the direction of the front-wheel steering speed detected by the second sensor, to indicate that an abnormality has occurred in either of the first or second sensors. Thus fail-safe operation is assured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.