Automatic deceleration control method and apparatus for a vehicl

Details Automatic deceleration control method and apparatus for a vehicl Automatic deceleration control method and apparatus for a vehicl

1998-01-03

2000-06-27

Dombroske, George

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

731173, 701 79, 701 80, 701 90, F02D 2902, F02D 4500, B60T 800, B60T 832

Patent

active

060817615

ABSTRACT:
An automatic deceleration control apparatus for a vehicle operates so as to secure appropriate tire grip performance, depending on the conditions of a road surface on which the vehicle runs turning, and restrain excessive rolling of the vehicle body, thereby stabilizing the turning behavior of the vehicle at all times. While the vehicle is turning on a high-friction road surface without undergoing yaw moment control, a safe vehicle speed is computed within the rollover limit of the vehicle. While the vehicle is turning on a low-friction road surface under yaw moment control, on the other hand, a safe vehicle speed that ensures satisfactory tire grip performance is computed in accordance with an estimated road friction coefficient. When the vehicle is about to exceed its safe speed as it turns, it is automatically decelerated to the safe speed or below. Thus, the vehicle can be prevented from spinning, drifting out, or rolling over.

REFERENCES:
patent: 4680714 (1987-07-01), Kubo
patent: 5047940 (1991-09-01), Onaka et al.
patent: 5702165 (1997-12-01), Koibuchi
patent: 5738420 (1998-04-01), Kawaguchi et al.
patent: 5902345 (1999-05-01), Minowa et al.

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