Basic Abs Control; Operation Of Abs Control Unit; Reference Speed; Simplified Abs Control - SSANGYONG Korando 2013 Manual

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3) Basic ABS Control

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Operation of ABS control unit

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Reference speed

The reference speed is the mean, I.e. average speed of all wheel speeds determined by simple
approximation.
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Simplified ABS control

If, during braking, one wheel speed deviates from the reference speed, the ABS control unit attempts to
correct that wheel speed by modulating the brake pressure until it again matches the reference speed.
When all four wheels tend to lock, all four wheels speeds suddenly deviate from the previously
determined reference speed. In that case, the control cycle is initiated again in order to again correct the
wheel speed by modulating the brake pressure.
Applications of the ABS control unit The signals
produced by the wheel sensors are evaluated in
the electronic control unit. From the information
received, the control unit must first compute the
following variables:
- Wheel speed
- Reference speed
- Deceleration
- Slip