Research On Correction Method For Automatic Transmission Shift Schedule

The car has200years of history from its birth to now, from mechanical transmission at firstto the current manual gearbox, produced a qualitative leap. Because of the AT more simple to shift,more convenient to operate, also let people experience the driving fun and car’s intelligent.Intelligent vehicle has become one of the targets that the people pursue. Based on this research,more and more people are engaged in intelligent shift strategy of automobile.The bus as the main transportation tool of city traffic, the running status is constantly start,acceleration, shift and parking, passengers up and down frequently, large load changes. So theautomatic transmission used in the bus also let it be. In this thesis, equipped with automatictransmission bus as the research object, based on optimal power and the best economical,developed a comprehensive schedule, and on this basis, combined with the intention of driver andlongitude and latitude information from GPS obtained the current traffic information, Accordingto the specific conditions in combination with the intent of the driver for real-time correction onshift schedule, and then the established the models to simulate and analysis, to verify thefeasibility and validity of comprehensive schedule and the correction of the method.In order to complete this thesis, I mainly do a bit of work aspects:1, Read a lot of literature in English, many at home and abroad to learn the application of theautomatic transmission, and a summary of their research shift schedule aspects. Also mounted onthe bus advantages of the automatic transmission is analyzed.2, The shift in the study of law approach, to the driver’s intention to acquire knowledge androad information GPS aspects of the in-depth study and validate the feasibility of its application inthis paper.3, of the common characteristics of the engine and the torque converter work carried outtheoretical analysis and programming, draw their output characteristics, the establishment ofdynamic equations and models developed bus optimal power and economy change block the law,and the introduction of dynamic residual amount Δd and fuel replenishment Δj two parameters to establish a comprehensive shift schedule, the use of traffic information and driver’s intention tomodify it.4, the establishment of a MATLAB/Simulink model to analyze the straight road conditions,detours and pathway, and its simulation analysis. Verify the feasibility of correction methods.In this paper, as a kind of shift schedule correction method, the research process through theresearch we skilled driver experience and previous to the intent of the driver are analyzed, andcombined to obtain road information through GPS, using fuzzy control method to obtain thecorrection method of shift schedule. And through modeling and simulation analysis, correctionmethod has vivificated. As a method, has its advantages and disadvantages, advantages can makea correction to shift strategy in real time, the disadvantage is that the database capacity is too big,heavy workload, the popularity is limited! I hope this paper can be used as a reference, and offersa new thinking and way for the later committed to the research of scholars.