Rear wheel steering control system for vehicle

Details Rear wheel steering control system for vehicle Rear wheel steering control system for vehicle

1989-07-05

1991-05-21

Lall, Parshotam S.

Boots, shoes, and leggings

36457107, 180 791, 180141, B62D 504, B62D 506

Patent

active

050180703

ABSTRACT:
A vehicle control system has a controller comprising a first section for producing a control signal to control the rear wheel steer angle so that the rear wheel steer angle remains equal to a linear combination of a proportional term obtained by multiplying the front wheel steer angle by a proportional coefficient, and a negative derivative term obtained by multiplying the time rate of change of the front wheel steer angle by a derivative coefficient, and a second section which increases the rear wheel steering amount in the direction opposite to the front wheel steering direction by increasing the absolute value of the derivative coefficient with increase in the lateral acceleration of the vehicle or the front wheel steer angle, in order to improve the yawing characteristic of the vehicle in the high lateral acceleration range.

REFERENCES:
patent: 4666013 (1987-05-01), Shibahata
patent: 4679809 (1987-07-01), Ito et al.
patent: 4705130 (1987-11-01), Fukunaga et al.
patent: 4706979 (1987-11-01), Kawabe et al.
patent: 4828064 (1989-05-01), Furutani et al.
patent: 4878557 (1989-11-01), Shibahata et al.

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