Anti-skid control system for use in motor vehicle

Details Anti-skid control system for use in motor vehicle Anti-skid control system for use in motor vehicle

1990-05-21

1992-01-21

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Pipeless valves

303103, 303109, 188181C, 36442602, B60T 866

Patent

active

050823337

ABSTRACT:
An anti-skid control system for use in a motor vehicle having wheels whose rotational speeds are sensed by wheel sensors. The anti-skid control system decides the condition of the road-surface, on which the motor vehicle is running, on the basis of signals from wheel sensors. A reference speed is further calculated on the basis of the sensed speeds of the wheels symmetrically provided at the rear-right and rear-left sides with respect to the advancing direction of the motor vehicle. That is a selected one of an average value of the speeds of the rear-right and rear-left wheels sensed by the wheel sensors and the maximum one of the sensed rear-right and rear-left wheel speeds is selected in accordance with the decided road-surface condition. The reference speed is calculated on the basis of the selected one. A control unit of the anti-skid control system performs slip control of the wheels in accordance with the calculated reference speed. With this arrangement, the anti-skid control system can improve the braking efficiency and controllability irrespective of turning of the motor vehicle.

REFERENCES:
patent: 3829168 (1974-08-01), Schnaibel et al.
patent: 4134621 (1979-01-01), Smedley et al.
patent: 4168866 (1979-09-01), McNinch, Jr. et al.
patent: 4896924 (1990-01-01), Kuwana et al.
patent: 4970650 (1990-11-01), Hashiguchi et al.

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