Anti-skid control system for a road surface having a split coeff

Details Anti-skid control system for a road surface having a split coeff Anti-skid control system for a road surface having a split coeff

1990-03-26

1991-10-15

Lall, Parshotam S.

Boots, shoes, and leggings

303102, 303111, G06F 1550, B60T 858, B60T 864

Patent

active

050580183

ABSTRACT:
The invention is directed to an arrangement for controlling a braking force applied to each of right and left road wheels individually depending upon a braking condition, with a hydraulic braking pressure supplied to each of wheel brake cylinders through actuators respectively. The actuators are controlled by the braking force control system wherein output signals of wheel speed detectors are fed into first and second detecting circuits respectively by which the braking conditions of the road wheels are detected. Then, the detected signals are fed into a first driving circuit which produces driving signals fed to the actuators on the basis of an output signal fed from either of the detectors for one road wheel having a tendency to be locked first. One of the actuators provided for the road wheel on the road surface of the lower coefficient of friction is driven by a driving signal fed from the first driving circuit, whereas the other actuator is driven by a driving signal which is fed from the first driving circuit and modified thereafter by the second driving circuit in response to a value representing a vehicle speed so as to increase the hydraulic braking pressure rapidly when the vehicle is driven at low speed, consequently shortening the stopping distance.

REFERENCES:
patent: 3840278 (1974-10-01), Fleischer et al.
patent: 3918766 (1975-11-01), Klatt
patent: 3926477 (1975-12-01), Klatt
patent: 3972568 (1976-08-01), Fleischer
patent: 4349876 (1982-09-01), Lindemann
patent: 4489382 (1984-12-01), Jonner et al.
patent: 4593955 (1986-06-01), Leiber

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