Patent ID: 8544964

Claim:
A brake control system for a utility vehicle having manned and unmanned operational modes, the brake control system comprising: a hydraulically operated brake; a shuttle valve in hydraulic communication with the brake; a manually operated brake circuit connected to the brake via the shuttle valve; and an electro-hydraulic (E-H) brake circuit connected to the brake via the shuttle valve, the E-H brake circuit comprising: a pump; a solenoid operated inlet valve having an outlet and having an inlet connected to the pump; an accumulator connected to the outlet of the inlet valve; a first solenoid operated brake valve having an outlet connected to the brake and having an inlet connected to the outlet of the inlet valve; a second solenoid operated brake valve having an outlet connected to the brake and having an inlet connected to the outlet of the inlet valve; a first central processing unit (CPU) operatively connected to the solenoid of the inlet valve and to the solenoid of the first brake valve; a second CPU operatively connected to the solenoid of the inlet valve and to the solenoid of the second brake valve; an accumulator pressure sensor for sensing a pressure in the accumulator and generating an accumulator pressure signal; and a brake pressure sensor for sensing a pressure in the brake and generating a brake pressure signal, the first and second CPUs controlling the inlet valve and the brake valves as a function of the accumulator pressure signal and the brake pressure signal.