The invention provides a vehicle driving speed determining method and a device. The method comprises the steps: obtaining the road information of a target road, the vehicle information of a target vehicle, and an engine oil consumption characteristic diagram of the target vehicle; establishing a power and resistance model of the target vehicle according to the vehicle information and the road information; generating a target state equation according to the power and resistance model; generating a target cost function of the target vehicle according to the target state equation and the engine oil consumption characteristic diagram; and determining a minimum value of the target cost function and a target control sequence corresponding to the minimum value by using a dynamic programming algorithm, and determining a driving speed curve of the target vehicle on the target road according to the target control sequence and the target state equation. According to the method, the proper runningspeed curve of the target vehicle running on the target road can be determined through the dynamic planning algorithm, so that the oil consumption of vehicle running can be effectively reduced, the fuel economy of the vehicle is improved, and resources and cost are saved.
本申请提供了一种车辆行驶速度确定方法和装置,其中,该方法包括:获取目标道路的道路信息、目标车辆的车辆信息和目标车辆的发动机油耗特性图;根据车辆信息和道路信息建立目标车辆的动力和阻力模型;根据动力和阻力模型生成目标状态方程;根据目标状态方程和发动机油耗特性图生成目标车辆的目标成本函数;利用动态规划算法确定目标成本函数的最小值和最小值对应的目标控制序列,并根据目标控制序列和目标状态方程确定目标车辆在目标道路上的行驶速度曲线。上述方法可以通过动态规划算法确定目标车辆在目标道路上行驶的合适的行驶速度曲线,从而能有效地降低车辆行驶的油耗,改善车辆的燃油经济性,节约资源和成本。
Vehicle running speed determining method and device
车辆行驶速度确定方法和装置
2020-04-21
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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