Antiskid control with surface friction compensation by prolonged

Details Antiskid control with surface friction compensation by prolonged Antiskid control with surface friction compensation by prolonged

1984-08-08

1987-05-12

Gruber, Felix D.

Boots, shoes, and leggings

303100, 303103, 303110, B60T 834, B60T 878, B60T 888

Patent

active

046654909

ABSTRACT:
In an antiskid control system for a motor vehicle, the speed and acceleration of at least one vehicle wheel are detected, and from the detected wheel speed, the speed of the vehicle is estimated. First and second variable threshold values are derived from the vehicle speed. The wheel speed and acceleration are compared with the first and second thresholds, respectively, to estimate the level of road surface friction and to operate solenoid-operated hydraulic brake pressure decreasing means. The operating period of the pressure decreasing means is controlled in accordance with the estimated road surface friction to prevent excessive reduction of the brake pressure and premature locking of the wheels.

REFERENCES:
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patent: 4425622 (1984-01-01), Arikawa
patent: 4446522 (1984-05-01), Sato et al.
patent: 4466066 (1984-08-01), Saumweber et al.
patent: 4530059 (1985-07-01), Brearley et al.

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