The invention relates to an intelligent networked automobile cruise speed optimization method for variable-gradient and variable-speed-limit traffic scenes. The method is mainly divided into three parts. A dynamic traffic information acquisition method is used for acquiring information such as a driving route, a road gradient, a road speed limit and the like from intelligent traffic cloud based ona V2X technology and transmitting the information to a vehicle-mounted controller; an optimization problem stage is divided according to the road speed limit; in a vehicle speed segmented optimization method based on a rolling distance domain optimization strategy, global problem segmented rolling optimization is achieved through the rolling distance domain optimization strategy; and according toan optimal vehicle speed calculation method based on dynamic planning, a multi-constraint and multi-target vehicle speed optimization problem is designed in each stage, an energy target function is established by adopting an automobile energy consumption model, and a safe, energy-saving and efficient cruise automobile speed is optimized and calculated by adopting a dynamic planning algorithm. Bymeans of existing mature technical conditions, automobile cruise speed optimization is achieved, and an effective and reliable solution is provided for automobile economical cruise driving.
本发明涉及一种面向变坡度和变限速交通场景的智能网联汽车巡航车速优化方法,主要分为三个部分,动态交通信息获取方法,其基于V2X技术,在智慧交通云获取行驶路线、道路坡度、道路限速等信息,传输至车载控制器;依据道路限速,划分优化问题阶段;基于滚动距离域优化策略的车速分段优化方法,其利用滚动距离域优化策略实现全局问题分段滚动优化;基于动态规划的最优车速计算方法,其在每个阶段设计包含多约束和多目标的车速优化问题,采用汽车能耗模型建立能量目标函数,并采用动态规划算法优化计算安全、节能、高效的巡航车速;本发明利用现有成熟的技术条件,实现汽车巡航车速优化,为汽车经济性巡航驾驶提供了有效可靠的解决方案。
Intelligent networked automobile cruise speed optimization method for variable-gradient and variable-speed-limit traffic scenes
一种面向变坡度和变限速交通场景的智能网联汽车巡航车速优化方法
2020-08-14
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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