Study on the Vehicle Controller of Hybrid Electric Vehicle based on fuzzy logic

This paper describes a kind of Parallel Hybrid Electric Vehicle (PHEV) with the torque and speed alternating-coupled planetary gear and Continuously Variable Transmission (CVT). By improving PHEV mode-transformation efficiency, it is easy to achieve the goal of improving fuel-economy and reducing emissions. The main components of the Vehicle Controller such as fuzzy control units, assistant control units and components control units are researched and designed successfully in the use of relative hardware and software based on the fuzzy logic control strategy of maximal state of charge of the battles, in order to realize real-time control of PHEV.