Vehicle front/rear wheel steering angle control apparatus and vehicle front/rear wheel steering angle control method
US6546323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/159
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A reference steering angle achieved when the steering operation quantity is sustained at a constant value is calculated in correspondence to the steering operation quantity. A decision is made as to whether the vehicle is in a turn-contracting state, in which the direction of a steering operation matches the direction of a change made in the steering operation or a turn-expanding state in which the direction of the steering operation is opposite from the direction of the change made in the steering operation. If the vehicle is determined to be in a turn-contracting state, the target steering angles for the front wheels and the rear wheels are calculated by correcting the reference steering angle so as to achieve a smaller steering center elevation angle. If, on the other hand, the vehicle is determined to be in a turn-expanding state, target steering angles for the front wheels and the rear wheels are calculated by correcting the reference steering angle so as to achieve a larger steering center elevation angle. The steering angles at the front wheels and the rear wheels are adjusted independently of one another so as to match the steering angles with the target steering angles thu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.