Hybrid vehicle energy optimization control method and system based on speed planning
Hybrid vehicle energy optimization control method and system based on speed planning
- Neue Suche nach: XIE GUOJIN
- Neue Suche nach: DING RONGJUN
- Neue Suche nach: HU MANJIANG
- Neue Suche nach: YANG ZEYU
- Neue Suche nach: QIN ZHAOBO
- Neue Suche nach: BIAN YOUGANG
- Neue Suche nach: XIE GUOJIN
- Neue Suche nach: DING RONGJUN
- Neue Suche nach: HU MANJIANG
- Neue Suche nach: YANG ZEYU
- Neue Suche nach: QIN ZHAOBO
- Neue Suche nach: BIAN YOUGANG
The invention provides a hybrid vehicle energy optimization control method and system based on speed planning, and the method comprises the following steps: A, classifying the driving states according to the driving purpose, and setting the data collection content of different types of speed planning curves; b, determining the category of a speed curve to be planned, carrying out speed data acquisition, fitting the speed curve by adopting a Gaussian function algorithm, carrying out speed planning, and obtaining a target speed planning curve of the vehicle in the current period; c, establishing a series hybrid electric vehicle (SHEV) model; d, establishing a target performance function; and E, according to the target speed planning curve, an optimal control sequence of the target speed planning curve in the whole driving process is calculated by adopting a model prediction control algorithm, an engine output power control curve in the driving process is obtained, and a vehicle engine is controlled to operate on an economic curve. According to the method, the comfort and accuracy of automatic driving of the vehicle can be improved, the energy consumption of the vehicle is locally optimal, and the fuel efficiency is improved.
本发明提供一种基于速度规划的混合动力车辆能量优化控制方法及系统，包括以下步骤：A、对行车状态按驾驶目的进行分类，设定不同类别的速度规划曲线的数据采集内容；B、确定拟规划的速度曲线类别，进行速度数据采集，采用高斯函数算法拟合速度曲线，进行速度规划，获得本车辆本周期目标速度规划曲线；C、建立串联混合动力车辆SHEV模型；D、建立目标性能函数；E、根据目标速度规划曲线，采用模型预测控制算法，计算出目标速度规划曲线的整个行车过程中的优化控制序列，获得该行车过程的发动机输出功率控制曲线，控制车辆发动机在经济曲线上运行。本发明能够提高车辆自动驾驶的舒适性与精准性，并使车辆能量消耗局部最优，提高燃油效率。
Dokumentinformationen
Hybrid vehicle energy optimization control method and system based on speed planning
一种基于速度规划的混合动力车辆能量优化控制方法及系统
2023-01-06
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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