SSANGYONG Rexton Y290 2012 Manual page 513

3) Basic ABS Control
Operation of ABS control unit
Reference speed
The reference speed is the mean, I.e. average speed of all wheel speeds determined by
simple approximation.
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.
Select Low control
This control is used for the rear axle. This controls the brake pressure on the rear wheels so
that the rear wheels will not be locked.
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