Vehicle steering control system

Details Vehicle steering control system Vehicle steering control system

1995-06-05

1997-12-30

Teska, Kevin J.

Boots, shoes, and leggings

364424052, 180446, B60K 4100, B62D 504

Patent

active

057037752

ABSTRACT:
In a vehicle steering control system, an actuating torque is applied to steerable wheels according to a steering torque applied to a steering wheel in a conventional manner, and an additional actuating torque is applied to the steering wheel by an electric motor according to lateral dynamic conditions of the vehicle so as to control the lateral stability of the vehicle even in the presence of external interferences such as crosswind. Such external interferences are detected as a lateral dynamic condition of the vehicle such as the yaw rate of the vehicle, and the steering control system produces a steering reaction which counteracts such a lateral dynamic condition by applying the additional actuating torque to the steerable wheels so that the vehicle may maintain a straight course in spite of such external interferences without requiring any intentional efforts by the vehicle operator. By representing the vehicle with a first-order delay transfer function in regards to its lateral dynamic response for each given steering input, the vehicle operator can handle the vehicle without encountering any substantial resistance even when the steering wheel is turned briskly or at high speed.

REFERENCES:
patent: 5251135 (1993-10-01), Serizawa
patent: 5528497 (1996-06-01), Yamamoto et al.

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