Control Strategy Research of Parallel Hybrid Electric City Bus Based on Fuzzy Control Theory

This article briefly introduces fuzzy control theory and its characteristics,designs the certain control strategy applied to a hybrid electric city bus according to the battery SOC value and the deviation torque between the required torque of vehicle and the engine torque under current speed,and the engine expected output torque. Meanwhile,this article respectively adopts electrically aided control strategy and the designed fuzzy control strategy to simulate a hybrid electric city bus to compare the two control strategies' effect.