| The paper is about of manufacture automobile gas-brake valves' synthesis-performance testing system.First, through lucubrating automobile brake process on the vary coherence coefficient road surface, educes testing theory research about of gas-brake valves.Secondly, detailedly analyzes the theory of gas-brake valves' pressure adjustment and their function in the brake system. On the base of them, discussestesting gas-brake valves' performance' s requirement and condition, and makes certain of the testing principle and technical requirement. This testing system mainly appliances IPC (industry Personal Computer) control technology, electric-gas proportion control technology and gas-transmission testing technology and so on. For gas- transmission system, mainly discusses testing theory, detailed structure and performance' s character; for mechanism system, mainly design brake - valve's linear motive machine and auto clearance-adjust arm simulate machine.Finally, discusses the control system. On the side of hardware, introduces its constitute and characteristic. On the side of software, expatiates vision programme and application of DMA (Direct Memory Access) and interrupt technology on the environment of Windows 2000.
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