| With the rapid development of the automobile industry, the auto industry has gradually become a pillar industry in many countries. In order to control the quality of automotive products, and improve the quality, it is bound to put its assembly and parts higher and more stringent requirements. Transmission is the necessary system to achive the engine power output to traffic. Therefore, testing and analysis the transmission parts' and components' performance, life, can provide a reliable evaluation for the product design and quality of the scientific basis, shorten product development cycles and increase product quality.Based on the large number of literature at home and abroad, Against advanced and widespread automobile transmission test bed system abroad, combining Shaoguan ambitious automotive transmission gears Limited Test-bed project,this Papers research and development Automotive Transmission Performance Testing Platform suited to China's conditions . This test platform not only can carry out transmission test,but also can provide reliable data for the further transmission product research and development.First ,papers reviewed and analyzed the domestic and foreign automobile transmission technology of the status quo, and then the following five part of the test bed development were introduced.(1) hydraulic loading system: first the principle of the hydraulic loading system was introduced,and then designed the structure of the hydraulic loading system, in accordance with the requirements of the design of the it, the hydraulic loading control system was also designed. Finally, the loading process of the load control system was introuced briefly.(2) Oil circulatory system:according to the work requirements of the circulatory system,paper designed the pipeline structure of the circulatory system, introduced the control methods which a system to control temperature and the control principle of the flow control valve and the design of electronic control unit.(3) Motor Speed Control System: First introduced Several of the principles and methods of VVVF, and then introduced the motor speed control method in a system. (4) The supervision system for test-bed Hardware foundation of the supervision system, including system framework, data collection board, PLC and its D/A & A/D module and method to software designing are introduced.(5) Parameter examination and anti- interference design Parameter examination, including rotate speed, wind temperature, wind pressure, specification of some sensor and anti-interference design are briefly introduced.
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