Research On Fuzzy Control Of AMT System Based On LabVIEW

The automation of the Vehicle power transmission system is the kernel in the vehicle electronics. The clutch control and the shift schedule are the key and difficult problems in AMT. These technologies affect the economics and the dynamics, the comfort and the security. Aiming on AMT system which has simple structure, high efficiency, fuzzy control technology was introduced. By combining the experience of the drivers and theory, the shift schedule and clutch control strategy was studied to avoid constructing the formula of the complicated multi-parameters and non-linear system .Analyzing the system theory and the structure, clutch manipulation principle and the performance criteria of the gear shifting was introduced. Based on the data communication between the ECU and PC using VISA node in LabVIEW, the impact degree module, the slip frictional power module and the total program were designed.Analyzing principle of the clutch control and the shift control, the apt parameters were selected as the antecedences and the consequences of fuzzy controller. Based on the driver's experience, the clutch control strategy and the shift schedule were achieved, and the fuzzy controller was build. By storing the membership function and the fuzzy controlling schedules in MCU, the fuzzy control was come true with indirect query method in MCU and shortened the time of program running.