The invention relates to an energy management method for minimum value principle-dichotomy iteration rapid solution. The method comprises the following steps: on the basis of a minimum principle and an ECMS algorithm, introducing a co-state variable about a state SOC (State of Charge) of the hybrid vehicle, establishing a Hamilton function for energy management, simplifying a vehicle key power model by utilizing regression analysis, and simplifying the Hamilton function; the optimal control problem is converted into an optimization process of a co-state variable, a terminal co-state variable function about an initial co-state variable is established according to a mapping relation from the initial co-state variable to the terminal co-state variable, and the optimal initial co-state variable is iteratively solved by adopting a dichotomy; a function dominant solution can be quickly obtained according to the optimal co-state variable sequence and the basic property of a standard quadratic function, Hamilton function values corresponding to feasible gears are sequentially solved and compared, and the dominant solution corresponding to the minimum Hamilton function and the gear are the optimal torque distribution mode and the gear at the current moment. And the fuel economy is improved, and the solving speed and real-time performance of the algorithm are enhanced at the same time.

    本发明涉及一种极小值原理‑二分法迭代快速求解的能量管理方法。该方法包括:混动车辆在极小值原理和ECMS算法的基础上,引入关于状态SOC的协态变量,建立能量管理的Hamilton函数,利用回归分析简化车辆关键动力模型,对Hamilton函数进行化简;将最优控制问题转化为协态变量的寻优过程,根据从初始协态变量到终端协态变量的映射关系,建立关于初始协态变量的终端协态变量函数,采用二分法迭代求解最优初始协态变量;依据最优协态变量序列和标准二次函数基本性质可以快速获得函数显性解,依次求解并比较可行挡位对应的Hamilton函数值,最小Hamilton函数对应的显性解和挡位便是当前时刻最优转矩分配方式和挡位。提高燃油经济性的同时增强了算法求解的速度和实时性。


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    Title :

    Energy management method for minimum value principle-dichotomy iteration rapid solution


    Additional title:

    一种极小值原理-二分法迭代快速求解的能量管理方法


    Contributors:
    SONG DAFENG (author) / YU DELONG (author) / ZENG XIAOHUA (author) / GAO HAOMING (author) / YAN JINXING (author)

    Publication date :

    2024-12-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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