Patent ID: 8490758

Claim:
An electro-hydraulic brake system for a vehicle, comprising: a caliper positionable about a portion of a brake disk of a driving wheel of the vehicle, the caliper comprising one or more hydraulic cylinders and one or more springs, each of the cylinders arranged generally in parallel with at least one of the one or more springs; one or more hydraulic pistons configured to travel within the one or more hydraulic cylinders and to exert a force on a brake pad attached to the caliper in a direction away from the brake disc and opposite to a spring force exerted on the brake pad in a direction toward the disc by the one or more springs, the brake pad moveable into contact with the brake disc to exert a braking force on the driving wheel of the vehicle; a hydraulic pressure actuator in communication with the one or more hydraulic pistons and configured to actuate the one or more hydraulic pistons, the hydraulic pressure actuator comprising a master cylinder in communication with the one or more hydraulic pistons and a self-locking lead screw configured to transmit an actuation force onto the master cylinder; and a controller configured to receive a brake command signal from a user pressing on a brake pedal of the vehicle and to convert the brake command signal into a braking force demand, the controller configured to generate a brake actuator command based at least in part on the braking force demand and to communicate the brake actuator command to the hydraulic pressure actuator to thereby operate the hydraulic pressure actuator to adjust the position of the brake pad to a position relative to the brake disk corresponding to the brake actuator command and to maintain the brake pad at said position until another brake command signal is received from the user pressing on the brake pedal.