Control and compensation device in an anti-skid control system

A control and compensation circuit in an anti-skid control system including:

• a plurality of wheel speed detectors disposed one on each of a plurality of wheels for detecting a peripheral speed of a corresponding wheel to produce a wheel speed signal related to the peripheral speed of the corresponding wheel;
• a main control circuit for receiving, as an input signal, a wheel speed signal produced by each of said wheel speed detectors to produce an anti-skid control signal for collectively controlling the braking force of said plurality of wheels;
• an electromagnetic actuator for actuating the anti-skid control device so as to collectively release the braking force of each of said wheels when said electromagnetic actuator is placed in an energized state in accordance with the control signal produced by said main control circuit;
• a group of first circuits, one of said first circuits being disposed in each of said wheels to receive, as an input signal, a wheel speed signal produced by a corresponding wheel speed detector so that when said wheel speed signal indicates a locked state of the corresponding wheel continuously more than a predetermined time, an output signal immediately starts to be produced and when said wheel speed signal indicates that the locked state of the corresponding wheel is released, the output signal immediately stops being produced;
• and a single second circuit for producing an output signal of a predetermined time width to actuate said electromagnetic actuator immediately when at least one of said group of first circuits starts to produce an output signal.