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Technical Paper

Modeling and Simulation Research of Dual Clutch Transmission Based On Fuzzy Control

2007-08-05
2007-01-3754
Dual-Clutch-Transmission (DCT) is one kind new automatic transmission which has double clutch structure. The most important unit of DCT is Transmission-Control-Module (TCM).In the development process of TCM, simulation is an important research tools. We have analyzed the DCT principle of work, established its mathematical model, created the charge and discharge oil models of typical wet dual clutch transmission, established the control logic to unify and separate double clutch in turn, and also designed out the shift control using fuzzy control using MATLAB/Simulink software. Utilizing engine model, driver model, the DCT model, the TCM model, the vehicle model, established the vehicle simulation model, and implemented simulation; Result indicated that, the established model can correctly reflect the torque and speed change when shifted gears and can correctly realize the automatic shift gears.
Technical Paper

Intelligent Control of Metal-belt CVT Based on Fuzzy Logic

2009-04-20
2009-01-1535
Operating level of a metal-belt CVT mainly rest with the ECU. Conventional control strategies which were obtained from tests or PID controller can not correspond to the driver’s intention or provide various driving environments. It is considered that control targets of metal-belt CVT could be distinguished by a speed ratio, line pressure and starting element till now. Running performance of automobile with a CVT mainly depends on the speed ratio control. An adapted fuzzy logic ratio control algorithm is suggested and optimized. A throttle position and its changing rate will be inputs of the FLC to meet the driver’s intention and make the intelligent control come true. A fuzzy logic line pressure control algorithm is also suggested and optimized corresponding to the complicated high line pressure control.
Technical Paper

Hydrogen Fuel Cell Vehicles Technology and the Development Foreground

2009-04-20
2009-01-1015
The paper analyzes the technological features of hydrogen fuel cell vehicles, describes the changes that hydrogen fuel cell vehicles will bring to the automobile industry and the marketing modes, and proposes a brand-new marketing mode of “automobile supermarket”. It also introduces the opportunities and challenges that fuel cell technology will bring to the world energy technology, and puts forward a concept of “hydrogen energy network” to push the mutual development of both hydrogen fuel cell vehicles and hydrogen energy industry.
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