Vehicle-trailer backing up system using active front steer

Details Vehicle-trailer backing up system using active front steer Vehicle-trailer backing up system using active front steer

2006-12-26

2006-12-26

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

For trailer

C340S671000, C340S684000, C340S691500, C701S036000, C701S041000

Reexamination Certificate

active

07154385

ABSTRACT:
A vehicle-trailer back-up control system that employs an active front steer sub-system. The system includes a smart hitch controller that receives a vehicle speed signal and a hand-wheel angle signal, and calculates a hitch angle command signal. The system further includes a hitch angle sensor that measures the hitch angle between the vehicle and the trailer that is compared to the hitch angle command signal to generate a hitch angle error signal. A PID control unit receives the hitch angle error signal, and generates a corrected road wheel angle signal based on proportional and derivative gains. The corrected road wheel angle signal is used to generate a motor angle signal that is applied to a steering actuator to be combined with the steering angle signal to generate the front wheel steering signal during a back-up maneuver.

REFERENCES:
patent: 5247442 (1993-09-01), Kendall
patent: 5579228 (1996-11-01), Kimbrough et al.
patent: 6292094 (2001-09-01), Deng et al.
patent: 6806809 (2004-10-01), Lee et al.
patent: 7032705 (2006-04-01), Zheng et al.
patent: 2006/0020382 (2006-01-01), Shin et al.
ANONYMOUS, Device to Assist in Backing up a Trailer, Article, Sep. 2004, 2 pages.

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