Vehicle steering control system
US7392878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Sep 27, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0469
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle steering control system is provided with a steering angle ratio varying mechanism, a variable power assisted steering mechanism and a steering angle ratio controller. The steering angle ratio varying mechanism varies the steering angle ratio, which is the ratio of the turning angle of the front wheels with respect to the steering angle of the steering wheel. The variable power assisted steering mechanism outputs an auxiliary steering force that supplements the steering force of the driver to the steering mechanism for turning the front wheels. The steering angle ratio controller increases the steering angle ratio in a steering angle range in the vicinity of the steering angle center point, and reduces the steering angle ratio in the steering angle range in the vicinity of the rack stopper position, regardless of the steering angular speed of the steering wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.