Brake control system for an automotive vehicle

Details Brake control system for an automotive vehicle Brake control system for an automotive vehicle

1980-10-08

1983-05-17

Smith, Jerry

Boots, shoes, and leggings

303 97, 303109, B60T 810

Patent

active

043843301

ABSTRACT:
Disclosed is a brake control system for an automotive vehicle for controlling application and release of brake pressure in order to prevent the vehicle from skidding. The system includes a sensing circuit for determining wheel r.p.m., a deceleration detecting circuit for determining a deceleration rate of the wheel r.p.m. and generating a signal when the determined deceleration rate becomes equal to or greater than a predetermined value, a target wheel speed circuit for determining a target wheel r.p.m. based on the wheel r.p.m. and operative responsive to detection of a peak of the coefficient of friction between the vehicle wheel and the road, and a control circuit for controlling application and release of brake fluid pressure to wheel cylinders for controlling the wheel deceleration rate. The target wheel speed circuit is operative to determine a rate of deceleration of wheel r.p.m. based on the difference in wheel r.p.m. between the time of detecting the peak coefficient of friction and the time of detecting the immediately preceding peak. The target wheel r.p.m. is further based on the length of time between detection of the peaks and is determined by subtracting a deceleration value, based on the determined rate of deceleration, from the wheel r.p.m. determined at the time of detecting of the peak of coefficient of friction.

REFERENCES:
patent: 3709565 (1973-01-01), Jonason et al.
patent: 3752536 (1973-08-01), Machek
patent: 3758167 (1973-09-01), Machek
patent: 3827760 (1974-08-01), Fleagle
patent: 3833268 (1974-09-01), Fleagle
patent: 3985396 (1976-10-01), Kuwana et al.
patent: 4006942 (1977-02-01), Saito
patent: 4036536 (1977-07-01), Quon
patent: 4285042 (1981-08-01), Ohmori et al.

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