Commercial vehicle electronic brake system hardware in-ring test platform based on PXI and cRIO controller, and test method

The invention provides a commercial vehicle electronic brake system hardware in-ring test platform based on a PXI and cRIO controller, and a test method. According to the test platform, four brake gaschamber pressure signals and an accelerator pedal opening signal are acquired separately through an analog acquisition module; driving signals are output to a front axle single-channel module, two ABS electromagnetic valves of a front axle, and a back axle double-channel module through a digital output module; a brake pedal switch, a brake pedal opening signal and a steering wheel corner signal are acquired separately through a digital acquisition module; the analog acquisition module, the digital output module and the digital acquisition module perform data transmission with a cRIO controller correspondingly; driver input signals acquired by the three modules are transmitted to a PXI multifunctional I/O module and are input into a whole vehicle model in a PXI controller to realize closed-ring control; and the PX