Brake Actuator Control for Heavy Road Vehicle Active Safety Systems.

High precision and fast response of brake actuators are significant for pneumatic pressure control in Active Vehicle Safety Systems in Heavy Commercial Road Vehicles (HCRVs). A three-phase two-way actuator valve is controlled for Antilock Braking System (ABS) application in HCRVs to achieve brake pressure regulation. Actuation of the valve is done with the help of an Output Processor, which modulates the pressure accurately with minimum switching of the on-off solenoid valves. Finally, with the help of a PID-based Actuator Controller, precise control of the actuator is achieved. Hardware-in-loop tests on the regulator valve with the developed algorithms exhibited the desired performance with visible trade-offs between the valve control accuracy and the number of solenoid triggers.