Working Components Of Anti-lock Braking system-
While braking, if a wheel-locking situation is detected or anticipated, the ECU alerts the HCU by sending a current and commands it to release the brake pressure, allowing the wheel velocity to increase and the wheel slip to decrease.
When the wheel velocity increases, the ECU reapplies the brake pressure and restricts the wheel slip to a certain degree
(Note: When the braking action is initiated, a slippage between the tire and the road surface in contact will occur, which makes the speed of the vehicle different from that of the tire).
The Hydraulic Control Unit controls the brake pressure in each wheel cylinder based on the inputs from the system sensor. As a result, this controls the wheel speed. This process is repeated for the next braking operation.