Wheel lock control system failure and disabling circuit

Details Wheel lock control system failure and disabling circuit Wheel lock control system failure and disabling circuit

1976-09-29

1977-12-06

Kunin, Stephen G.

Fluid-pressure and analogous brake systems

Pipeless valves

340 52B, B60T 802

Patent

active

040614026

ABSTRACT:
A wheel lock control system for a vehicle is described that is responsive to wheel speed to provide a brake release signal when the wheel speed signal characteristics represent an incipient wheel lock condition. The braking forces on the vehicle wheels are relieved by the wheel lock control system for the duration of the brake release signal. A monitoring circuit monitors selected system parameters and provides a fault signal while the parameters represent a fault condition. A logic circuit is responsive to the fault signal and the brake release signal to provide an inhibit signal which is initiated solely by the fault signal and terminated only when both the fault and the brake release signals are terminated so that the inhibit signal exists only for the duration of a temporary fault occurring during time periods other than during a brake release signal and exists for the duration of the longer one of the fault signal or a brake release signal if the fault signal coexists at least momentarily with the brake release signal. The system is inhibited from releasing the vehicle wheel brakes during the period of the inhibit signal.

REFERENCES:
patent: 3620577 (1971-11-01), Neisch et al.
patent: 3899215 (1975-08-01), Sutton
patent: 3966267 (1976-06-01), McNinch, Jr. et al.

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