ABS pressure apply algorithm

Details ABS pressure apply algorithm ABS pressure apply algorithm

1989-02-03

1989-11-21

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303104, 303105, 303DIG4, 303110, B60T 858

Patent

active

048817848

ABSTRACT:
A brake control system is described that maximizes vehicle braking efficiency by maximizing the amount of time spent cycling pressure at or near the optimal pressure for the road surface. Upon detecting an incipient wheel lock condition, the system measures the optimal pressure for the road surface and relieves pressure. Once wheel recovery is sensed, the system reapplies pressure to a significant fraction of the optimal pressure and increases pressure gradually from that point. If a change to a higher coefficient surface occurs while the system is modulating brake pressure, the system detects that surface transition and rapidly increases brake pressure to quickly arrive at the new optimal pressure.

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