Wheel slip control system for automotive vehicles and the like

Details Wheel slip control system for automotive vehicles and the like Wheel slip control system for automotive vehicles and the like

1976-04-15

1977-07-26

Kunin, Stephen G.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 20, B60T 802, B60T 808

Patent

active

040378810

ABSTRACT:
A control system for adjusting the pressure applied to fluid-controlled brake actuating mechanisms in response to an incremental decrease in wheel velocity from the time a deceleration threshold is reached, at which time a gradual adjustment of brake line fluid pressure is effected, and monitored to determine when a continuously-variable reference increment of wheel speed .DELTA.v has been exceeded, at which time a sharp reduction in brake line fluid pressure is effected. This continuously-variable reference increment .DELTA.v is defined in each cycle by (1) the value of wheel velocity at the time said deceleration threshold is reached and (2) a variable reference signal which is related to both wheel speed and deceleration during periods of deceleration of the monitored wheel, and is related only to acceleration during periods of acceleration of the monitored wheel. A velocity predictor circuit sets a minimum velocity decrease threshold on the reapplication of brakes.

REFERENCES:
patent: 3612622 (1971-10-01), Riordan
patent: 3744855 (1973-07-01), Ochiai
patent: 3827760 (1974-08-01), Fleagle
patent: 3883186 (1975-05-01), Rodi
patent: 3951467 (1976-04-01), Fleagle

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