Antiskid brake system for vehicle.

摘要

In an antiskid brake system for a vehicle, the braking pressure applied to a wheel (1-4) is reduced when the deceleration of the rotational speed of the wheel (1-4) reaches a predetermined value and is increased when the acceleration of the rotational speed of the wheel (1-4) reaches a predetermined value after reduction of the braking pressure. In a low vehicle speed range lower than a predetermined vehicle speed, the braking pressure is increased at a predetermined rate when the acceleration of the rotational speed of the wheel (1-4) reaches said predetermined value after reduction of the braking pressure. The predetermined rate is independent from the rotational speed of the wheel (1-4) and is changed with the friction coefficient of the road surface so that it reduces as the friction coefficient of the road surface reduces. <IMAGE>