Method and apparatus for four wheel steering control utilizing tire characteristics
US5402341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1992 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Apr 6, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/159
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and system is provided for improving vehicle handling during vehicle operation in the nonlinear region of the front tires for use with a vehicle (10) having manually operable front steerable wheels (12) and electronically controlled rear steerable wheels (14). The method includes the step of calculating a desired rear steer angle based on vehicle parameters, such as vehicle speed and front wheel angle. Preferably, the method also includes the steps of determining if the vehicle is operating in the nonlinear region of the front tires, calculating a handling term if the vehicle is operating in the nonlinear region of the front tires and modifying the desired rear steer angle based on the handling term. The rear steerable wheels are then steered toward the modified desired rear steer angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.