Electronically Controlled Electricity Actustor Automatic Transmission Test-Bed

As the development of automobile technology, the convenience and comfort are highly desired by people, so more and more automatic transmissions are installed to cars. As a result of cost restriction, at present some automobiles are equipped with manual transmission. On the one hand, the automobile equipped with MT will increase Drivers'labor intensity, on the other hand, it does not favor the traffic safety. The automobile equipped with automatic transmission has smooth gearshifting and convenient operation. Moreover, it can automatically gearshift in term of optimal occasion, redounding to improvement of dynamic performance and fuel economy. So, mang manufacturers have considered automatic transmission as their development direction.In the article, through the analysis about present automatic transmission, proposes one kind of brand-new electricity actuator automatic transmission, and analyed its structure, working principle and chantacterristics. Automatic Transmission is important composing part, its capability influence quality of car to the largish extent. Reference the testing standards of transmission in inside and outside, for the new automatic, drawn up the correlation testing content.In the the process of development new products, inspection and maintenance of automatic transmission, carried correlation testing to the transmission gearbox appears extremely essential. In order to research this new automatic transmission, builded the transmission test-bed., mainly divided into the hardware part and the software part. And the hardware part included test platform overall design, power unit analysis, load installment analysis, test-bed performance match. The software part included test-bed control system design, testing system design, experimental sensor choiced and the measure of parameters.The simulation model is built up by the software MATLAB/SIMULINK, included the power source module, three-phase motor module, the judgment model of transmission shift position, the power transmission model of gearbox, the transmission load model and so on. Set up simulation parameters and run the simulation model, through the analysis of simulation curve, confirmed the correctness of this model.