Fuzzy Control and Simulation on Automatic Transmission of Tracked Vehicle in Complicated Driving Conditions

In order to adapt automatic transmission system to the complex running conditions of tracked vehicle, the primary principle of fuzzy intelligent shift control of tracked vehicle is proposed and the simulation model of tracked vehicle drive train are established, based on human-vehicle-road closed loop system of vehicle steering parameter, road surface status and driver manipulating information. An intelligent fuzzy shift control system composed of a basic fuzzy shift strategy and a fuzzy modification module is developed to improve dynamic conditions and cross-country maneuverability. The simulation result shows that the fuzzy shift strategy can improve the shift quality of a tracked vehicle under varying driving conditions and avoid shift cycling effectively. Therefore the intelligent fuzzy shift strategies are effective.