The invention discloses a hybrid electric vehicle economic driving decision-making method in a multi-lane scene, which comprises the following steps: collecting traffic information, predicting the traffic density and traffic flow balance speed of surrounding vehicles, and predicting the speed of the surrounding vehicles through a function interpolation method; by taking lane changing safety, main vehicle passing efficiency, influence on passing efficiency of vehicles behind a target lane after lane changing and main vehicle lane changing income optimization as targets, constructing an upper-layer target function, adding related constraint conditions, and calculating a lane changing decision and a main vehicle speed; and the battery charging and discharging current, the engine torque, the motor torque, the engine rotating speed and the motor rotating speed serve as constraint conditions, a lower-layer target function is constructed, and the optimal engine torque and the optimal motor torque of the hybrid electric vehicle are obtained according to the lane changing decision and the main vehicle speed. The problems that an existing decision-making method is single in target, the algorithm lacks transverse control, and ecological driving cannot be fully achieved are solved.
本发明公开了多车道场景下混合动力汽车经济驾驶决策方法,采集交通信息,预测周边车辆的交通密度、交通流平衡速度,通过函数插值方法预测周边车辆速度;以换道安全性、主车通行效率及换道后对目标车道后车通行效率的影响、主车换道收益优化为目标,构建上层目标函数,并增加相关约束条件,计算换道决策及主车速度;将电池充放电电流、发动机转矩、电机转矩、发动机转速、电机转速作为约束条件,构建下层目标函数,根据换道决策及主车速度,得到混合动力汽车最优的发动机转矩、电机转矩。解决了现有的决策方法目标单一,算法缺乏横向控制,无法充分达到生态驾驶的问题。
Economic driving decision-making method for hybrid electric vehicle in multi-lane scene
多车道场景下混合动力汽车经济驾驶决策方法
2024-03-19
Patent
Electronic Resource
Chinese
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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