B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
341/73.2
B60T 8/1761 (2006.01)
Patent
CA 1134011
ABSTRACT The invention provides a control system which predicts the brake re-apply point during a brake pressure release/re-apply cycle by measuring the duration of the synchronous running period, that period during which the wheel is decelerating at substantially the same rate as the vehicle. An increase in the synchronous running period above an optimum period is arranged to bring about an earlier re-application of the brakes in a cycle, and a decrease in the synchronous running period is used to effect a later re-application of the brakes. Various circuits are disclosed for detecting the duration of the synchronous running period. In a preferred circuit a track and store circuit compares an acceleration/ deceleration signal with a stored signal whose amplitude follows that of the acceleration/ deceleration signal, and the synchronous running period is taken to be the period between coincidences between the acceleration/ deceleration signal and the stored signal. The timing of the brake re-apply signal is preferably controlled by varying a re-set threshold of a threshold switch responsive to wheel acceleration/ deceleration.
335554
Adamson John
Brearley Malcolm
Lucas Industries Limited
Macrae & Co.
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