Automatic vehicle steering apparatus

Details Automatic vehicle steering apparatus Automatic vehicle steering apparatus

1991-02-25

1993-08-10

Tyson, Karin L.

Motor vehicles

With means for controlling operation responsive to...

Radiation, force, or waves reflected from external object or...

180131, 180142, 36442407, B62D 128

Patent

active

052340708

ABSTRACT:
A vehicle is operable in either one of two modes to control the turning of steerable vehicle wheels. During operation of the vehicle in a manual steering mode, the steerable vehicle wheels are turned in response to rotation of a steering wheel. During operation of the vehicle in an automatic steering mode, the steerable vehicle wheels are turned to maintain a predetermined relationship between the vehicle and a reference during movement of the vehicle relative to the reference. Upon initiation of operation of the vehicle in either of the two steering modes, a valve assembly is operated from an initial condition to either one of two actuated conditions to effect turning movement of the steerable vehicle wheels toward either the left or the right. During the manual steering mode, the valve assembly is operated in response to rotation of the vehicle steering wheel. During the automatic steering mode, the relationship of a vehicle to the reference outside of the vehicle is sensed and the valve assembly is operated independently of the steering wheel to maintain a predetermined relationship between the vehicle and the reference as the vehicle moves relative to the reference.

REFERENCES:
patent: 3946825 (1976-03-01), Gail
patent: 4155417 (1979-05-01), Ziems
patent: 4219093 (1980-08-01), Lang
patent: 4406232 (1983-09-01), Fasse et al.
patent: 4414903 (1983-11-01), Fasse et al.
patent: 4657087 (1987-04-01), Liveneh
patent: 4736811 (1988-04-01), Marsden et al.
patent: 4803415 (1989-02-01), Sepsey
patent: 4967362 (1990-10-01), Shutten et al.
patent: 5048630 (1991-09-01), Schaffer
SAE Technical Paper Entitled Automatic Electronic Steering-A New Approach.

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