Vehicular rear wheel steer angle control system

Details Vehicular rear wheel steer angle control system Vehicular rear wheel steer angle control system

1986-06-27

1987-11-17

Love, John J.

Land vehicles

Wheeled

Running gear

180140, 180142, B62D 714

Patent

active

047069783

ABSTRACT:
A four wheel steer vehicle is equipped with a steering control system for controlling a rear wheel steer angle so that a rear end of the vehicle follows a path along which a front end moves. The control system includes a front wheel steer angle sensor, a controller for producing a control signal representing a desired rear wheel steer angle and an actuator for altering the rear wheel steer angle in response to the control signal produced by the controller. The controller estimates the path of the front end by calculating a value of a course angle of the front end from the front wheel steer angle each time the vehicle travels a predetermined short distance, and storing a predetermined number of the course angle values which are most recently determined. The controller determines the desired rear wheel steer angle so that the course angle of the rear end equals the oldest one of the stored course angle values of the front end.

REFERENCES:
patent: 4263979 (1981-04-01), Sturgill

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