Apparatus and method for testing pressure change rate of component in electro-pneumatic braking system of commercial vehicle

An apparatus for testing a pressure change rate of a component in an electro-pneumatic braking system of a commercial vehicle, comprising:

• a pressure change rate test bench comprising an insulating operating stand including a bench panel and an insulating rubber pad, and a special support disposed on the insulating operating stand to fix different components and assemblies;
• a pneumatic loop mounted on the pressure change rate test bench through the special support, and configured to implement on-off control of air and detection on a pressure change rate of a tested component in an electro-pneumatic braking system of a commercial vehicle;
• a signal processing unit comprising a filter circuit and a National Instruments (NI) acquisition card and configured to acquire a pressure signal and a differential pressure signal and perform analog-digital conversion on the signals to provide signals recognizable by an upper controller and a lower execution component;
• and
• a control unit configured to communicate with the pneumatic loop and drive the components in the pneumatic loop to act by setting a control parameter to obtain test data of the tested component in the electro-pneumatic braking system of the commercial vehicle in the pneumatic loop, wherein the test data comprises braking pressure change rate information and pressure information of the tested component in the electro-pneumatic braking system of the commercial vehicle.