The invention discloses a hybrid electric vehicle predictive energy management method considering an SOC track, and belongs to the field of plug-in hybrid electric vehicle control. The method comprises the following steps: firstly, linearly solving a global target SOC track based on a vehicle driving path and target electric quantity consumption, and solving optimal torque distribution in a prediction time domain by using a dynamic programming algorithm to obtain a reference SOC track; secondly, solving the optimal engine power by adopting a linear quadratic form output tracking controller by taking the SOC following effect and the optimal engine fuel consumption as targets; and finally, calculating the required torque of each power source based on a rule, and sending the controlled quantity to a corresponding controller to realize torque distribution. The objective of the invention is to solve the optimal torque distribution in the prediction time domain and control the power consumption in the vehicle driving path at the same time, that is to say, prediction information of future working conditions is fully utilized, and the vehicle economy is improved at the same time of controlling the target power consumption.
本发明公开了一种考虑SOC轨迹的混合动力汽车预测能量管理方法,属于插电式混合动力车辆控制领域。首先,基于车辆行驶路径和目标电量消耗线性求解全局目标SOC轨迹,在预测时域内利用动态规划算法求解最优转矩分配,以得到参考SOC轨迹;然后,以SOC跟随效果和发动机燃油消耗量最优为目标,采用线性二次型输出跟踪控制器求解最优发动机功率;最后,基于规则计算各动力源需求转矩,将控制量发送给相应控制器,实现转矩分配。本发明目的在于:在预测时域内求解最优转矩分配的同时实现对车辆行驶路径中电量消耗的控制,即充分利用未来工况的预测信息,在实现对目标电能消耗控制的同时提高车辆经济性。
Hybrid electric vehicle prediction energy management method considering SOC track
一种考虑SOC轨迹的混合动力汽车预测能量管理方法
2023-07-07
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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