System and method for controlling an automated braking application

A system for controlling automated system braking on a vehicle, the system comprising:

• a service brake, including a supply port, actuated based on a pressure of a pneumatic fluid at the service brake supply port;
• a first valve including a supply port, a delivery port, and an electronic control port, the first valve supply port fluidly communicating with the first valve delivery port based on a state of the first valve based on an electronic control signal received at the first valve electronic control port;
• a second valve including a supply port, a delivery port, and an electronic control port, the second valve supply port fluidly communicating with the second valve delivery port based on a state of the second valve based on an electronic control signal received at the second valve electronic control port;
• a modulator including a supply port, a delivery port and a control port, the modulator supply port fluidly communicating with the modulator delivery port based on a modulator control signal at the modulator control port, and the modulator delivery port fluidly communicating with the service brake supply port;
• and
• a controller capable of i) transmitting a first valve electronic control signal to the first valve electronic control port, ii) transmitting a second valve electronic control signal to the second valve electronic control port, and iii) determining an activation profile for the modulator during an automated system braking event based on the respective states of the first valve and the second valve, and transmitting the modulator control signal to the modulator control port for controlling the modulator according to the activation profile during the automated system braking event.

A method for controlling brakes on a vehicle, the method comprising:

• receiving an automated system brake request control signal, representing a requested system brake application and an identified urgency;
• determining a maximum braking pressure to be applied during the system braking application based on the identified urgency;
• transmitting a first system brake mode electronic control signal to an associated first valve to set the first valve state based on the identified urgency;
• transmitting a second system brake mode electronic control signal to an associated second valve to set the second valve state based on the identified urgency, the maximum braking pressure during the automated system braking application being set by the first valve state and the second valve state;
• determining an activation profile for an associated modulator during an automated system braking event based on the determined maximum braking pressure;
• and
• transmitting modulator control signals to achieve the activation profile during the automated system braking event.