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Power-split continuously variable transmissions (CVTs) represent a promising technology to improve the fuel economy of high-power off-road vehicles such as construction and agricultural machines. Power-split CVTs are capable of keeping the combustion engine running within the optimal range in terms of fuel economy and performance. There are characterized by the combination of a traditional mechanical...
Control strategy that determines the overall efficiency of hybrid system plays a centre role in hybrid electric vehicle (HEV). Utilizing fuzzy logic with quadratic programming, an optimal torque based fuzzy logic control strategy for parallel hybrid electric vehicle is built. The controller is designed based on battery state of charge, electric motor speed, and a relationship between the totally required...
In order to realize optimal distribution between two types of energy in HEV and assure the reasonable operation of motor and battery, an optimal method based on energy fuzzy control strategy is presented. The proposed energy fuzzy control strategy is modeled in Simulink and incorporated into the vehicle simulation software ADVISOR. Then, to the lack of the traditional method of getting membership...
In front wheels driven vehicles, fuel economy can be obtained by summing torques applied on rear wheels. On the other hand, unequal torques applied to rear wheels provide enhanced safety. In this paper, a model with seven degrees of freedom is considered for vehicle body. Thereafter, power-train subsystems are modeled. Considering an electrical machine on each rear wheel, a fuzzy controller is designed...
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