Steering control system

Details Steering control system Steering control system

1997-09-04

1999-12-07

Mai, Lanna

Motor vehicles

Steering gear

With electric power assist

701 41, 701 42, B62D 504

Patent

active

059967242

ABSTRACT:
In a steering control system for a motor vehicle, the magnitude of the steering assist torque is reduced from a normal value by a value depending on the ratio of the steering angle to a maximum permissible steering angle which is determined according to the frictional coefficient between the road surface and the road wheels so that excessive steering, which may otherwise occur on a slipper road surface, can be avoided. Additionally, the value by which the steering assist torque is reduced is increased with an increase in the steering speed so that a certain damping effect may be achieved in the system. This is particularly beneficial in preventing any ill effect which may arise when the steering wheel has a large mass of inertia, for instance by being equipped with an air bag system.

REFERENCES:
patent: 5729107 (1998-03-01), Shimizu et al.
patent: 5764015 (1998-06-01), Shimizu et al.
patent: 5767642 (1998-06-01), Furukawa et al.
patent: 5774819 (1998-06-01), Yamamoto et al.
patent: 5828972 (1998-10-01), Asanuma et al.

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