发明授权
- 专利标题: Rear wheel steering control
- 专利标题(中): 后轮转向控制
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申请号: US09992505申请日: 2001-11-06
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公开(公告)号: US06580988B2公开(公告)日: 2003-06-17
- 发明人: William Chin-Woei Lin , Yuen-Kwok Chin , Weiwen Deng , Scott P. Sherman , Paul A. Grougan , Eugene A. Rodden
- 申请人: William Chin-Woei Lin , Yuen-Kwok Chin , Weiwen Deng , Scott P. Sherman , Paul A. Grougan , Eugene A. Rodden
- 主分类号: B62D504
- IPC分类号: B62D504
摘要:
A method is disclosed for controlling the rear wheel angle in a four-wheel steering vehicle such as a pickup truck. The front wheels are steered using the conventional operator handwheel linked to the front wheels. The rear wheels are actuated with a reversible electric motor and the rear wheel angle controlled using a computer with inputs of vehicle velocity, operator handwheel position and correlated front wheel angle, and handwheel turning rate. Control of rear wheel angle starts with a correlation of ratios of rear wheel angle to front wheel angle, R/F, vs. vehicle velocity suitable, determined under steady state front steering angle and velocity conditions, to maximize the contribution of the rear wheels while avoiding side-slip of the vehicle. It is found that driver steering feel and vehicle maneuverability is improved by imposing a minimum front wheel angle requirement before rear wheel steering is permitted and by modifying the current value of R/F with gain factors base d on the hand wheel angle and rate of motion.
公开/授权文献
- US20030088350A1 REAR WHEEL STEERING CONTROL 公开/授权日:2003-05-08
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