In one embodiment, a vehicle braking system, for delivering pressurized air to a brake chamber to achieve a desired braking response, includes an air-pressure controlled relay valve for delivering the pressurized air to the brake chamber. A solenoid receives a variable control input pressure and delivers the control input pressure to the relay valve as a function of a state of the solenoid. An ECU controls the solenoid according to a control model for delivering the pressurized air to the brake chamber and achieving the desired braking response.
This application is a continuation of U.S. application Ser. No. 10/850,720 "Control Module for Single 3/2 Solenoid Controlled Relay Valve" filed May 21, 2004, now U.S. Pat. No. 7,415,341, which was a continuation-in-part of Ser. No. 10/745,126, U.S. Pat. No. 7,020,551 "Roll Stability Control System," filed Dec. 23, 2003, both of which are fully incorporated herein by reference.
