Wheel slippage control system

Details Wheel slippage control system Wheel slippage control system

1992-01-29

1999-03-09

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Pulse frequency or time period controlling pressure rebuild

B60T 832

Patent

active

058790632

ABSTRACT:
A processing circuit has a computing cycle divided into several subcycles of uniform duration. The time base values of the last three nulls of a square wave signal produced from the sinusoidal signal of a wheel speed sensor are stored in a register with three places. At the beginning of a subcycle the difference D of the latest and of the oldest time base values stored in the register is formed and in some cases after limiting is converted to a value 1/D and stored, while the previously stored oldest value is erased. At the start of a new computing cycle the stored value 1/D is further processed as the new wheel speed.

REFERENCES:
patent: 4233599 (1980-11-01), Brearly
patent: 5032821 (1991-07-01), Domanico

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