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| Torque distribution strategy of pure electric bus with double motors driving by front and rear axles |
| 1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan， Hubei 430070， China; 2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan， Hubei 430070， China； 3. Hubei Engineering Technology Research Center for New Energy and Intelligent Connected Vehicle,Wuhan University of Technology, Wuhan， Hubei 430070， China |
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Abstract To solve the coordination problem between the driving antiskid strategy and the optimal torque distribution strategy, based on the realtime particle swarm optimization algorithm, a comprehensive torque distribution strategy with the consideration of stability and economy of vehicles was proposed. The driving antiskid strategy with slip rate as control target could output the front and rear axle torque constraints. By the particle swarm optimization with realtime optimization as optimization method and with front and rear axle torque constraints as dynamic constraint condition, the optimal torque distribution strategy could run normally when the antiskid strategy took effect. Based on AVLCruise and Simulink platform, a joint simulation model of vehicle economy was established to analyze the optimization effect. The results show that under the three selected cycle conditions, the power consumption per hundred kilometers is averagely decreased by 479%, and the driving mileage is averagely increased by 549%. The comprehensive torque distribution strategy can improve the fuel economy on the premise of ensuring the longitudinal stability of bus.
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