Abstract: An antilock brake system for use with a self-energizing brake system having hydraulic interconnected actuators that act on an eccentric rotor and a brake exciter that provides for disengagement of the actuators from the rotor. The antilock brake system has wheel speed sensors that provide for a control module to determine when a wheel is in a state of immanent brake lock-up and to generate a control signal. Responsive to the control signal a brake disengagement module provides for regulation of the brake force generated by the brake system by alternately causing the exciter to operate the actuators to disengage and to re-engage the rotor.

Abstract: A brake system according to the present invention comprises an eccentric rotor and a brake effecter module. The brake effecter module has a pair of hydraulically interconnected actuators, a brake control valve and a brake exciter. Each of the pair of actuators can engage a different point on the eccentric rotor. The brake control valve effects braking by restricting the flow of a working fluid that is pumped in and out by each of the actuators as they engage the rotating rotor. The degree of restriction to the flow of the working fluid can be varied to adjust the amount of braking force applied. The brake system is self-energizing in that it is not reliant on a substantial external source of energy to effect braking. The energy required to pump the working fluid is derived from the rotation of the rotor. The brake exciter provides for disengagement of the actuators from the rotor when braking force is not being applied.