| Powertrain system of automobile is a general designation of engine and transmission. Integrated control system of powertrain is the product of integrated control to engine and transmission with high performance MCU(micro control unit). With the development of electron car technology and the improvement of people's standard of living, people's request to automobile performance become higher and higher. Integrated control of powertrain with MCU has been a kind of technology that is developed universally inside and outside of nation. At the same time, intelligent control technology has also become one of important direction in automobile integrated control, and it is applied increasingly and widely in control field of automobile. From this point, the thesis studies integrated control of automobile powertrain system adopting the means combining apish intelligent control and fuzzy control. The thesis consists of seven chapters.The conception of integrated control of automobile powertrain system is introduced, also the feasibility and necessity about integrated control is analyzed, and it is summarized about research condition of integrated control and application of intelligent control in automobile powertrain system. At the end of this chapter, the research content of this thesis is presented.The basic function and component of powertrain control system is expounded. The detailed course of clutch conjunction is analyzed. The rules and types of gear shiftting is summarized. In the end, the evaluation criterion of system shift quality is provided.The type of MCU is selected, and the necessary sensors and output implement of control system is introduced. The signal switch circuit and output control circuit is accomplished according to 8 bits micro control unit 80C552.As integrated powertrain control system is an embedded real time system, the software structure is refined according to programming thinking of module. Subroutine of surveillance and controlling is finished, and fuzzy system rules is compiled. At last, a three-stage hierarchical controller is designed and realized the comprehensive intelligence controlling of the system.After studying the extensive experiment of the system, the effect of intelligence controlling is compared with that of classical controlling, the superiority of the system is confirmed in the end.Continual shift-up and shift-down of the system is simulated by softwareVIIIMatlab/Simulink. A simulating method is given and a simulating model is established. The result of simulation is explained.Last chapter is the summary of whole thesis, and some opinions and suggestions are given for further research .
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