The ABS controls the slip rate of the wheels that tend to lock within the range near the peak grip slip rate by cyclically undergoing a hold-decrease-increase process for the brake pressure that tends to lock the wheels. In the ABS Corresponding to each brake wheel cylinder, there is a pair of liquid inlet and outlet solenoid valves, which can be controlled by the electronic control device respectively. Therefore, the braking pressure of each brake wheel cylinder can be adjusted independently, so that the four wheels No brake lockup occurs.
Although the structure and working process of various ABSs are not exactly the same, they all prevent the controlled wheels from locking by adaptively cyclically adjusting the braking pressure that tends to lock the wheels. All kinds of ABS are the same in the following aspects.