汽车工程 ›› 2021, Vol. 43 ›› Issue (2): 181-188.doi: 10.19562/j.chinasae.qcgc.2021.02.004

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并联混合动力汽车ECMS的时变等效因子提取算法的研究

李跃娟1(),齐巍2,王成2,张博2,卢强2   

  1. 1.北京工业大学机械工程与应用电子技术学院,北京 100124
    2.中国汽车技术研究中心有限公司,天津 300300
  • 收稿日期:2020-06-25 修回日期:2020-09-22 出版日期:2021-02-25 发布日期:2021-03-04
  • 通讯作者: 李跃娟 E-mail:yuejuan@bjut.edu.cn
  • 基金资助:
    政府间国际科技创新合作重点专项(2019YFE0101900);天津市自然科学基金(17JCYBJC41600)

Study on Extraction Algorithm for Time⁃varying Equivalent Factor of ECMS for Parallel Hybrid Electric Vehicle

Yuejuan Li1(),Wei Qi2,Cheng Wang2,Bo Zhang2,Qiang Lu2   

  1. 1.College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124
    2.China Automotive Technology & Research Center Co. ,Ltd. ,Tianjin 300300
  • Received:2020-06-25 Revised:2020-09-22 Online:2021-02-25 Published:2021-03-04
  • Contact: Yuejuan Li E-mail:yuejuan@bjut.edu.cn

摘要:

为解决当前等效燃油消耗最小控制策略(ECMS)未能根据实际工况选取最优等效因子的问题,利用动态规划算法(DP)和ECMS各自的优点,构建并联混合动力汽车能量算法模型,即采用动态规划算法的等效燃油消耗最小控制策略(ECMSwDP),将等效因子作为全局最优算法的控制变量,通过对等效因子的离散全局优化,获得基于工况的最佳时变等效因子。在标准工况下对时变等效因子实时控制策略与全局最优控制策略DP的各项性能参数进行了数值仿真,验证了时变等效因子提取算法的有效性和等效因子初始值选取方法的可行性。

关键词: 混合动力汽车, 动态规划, 等效消耗最小化策略, 时变等效因子

Abstract:

For solving the problem that the current equivalent consumption minimization strategy (ECMS) cannot select the optimal equivalent factor according to the actual driving condition, an energy algorithm model for parallel hybrid electric vehicle, i.e. ECMS with dynamic programming (DP), is constucted by taking the respective advantages of DP and ECMS. With equivalent factor as the control variable of global optimum alroithm, the condition?based optimal time?varying equivalent factor is abtained through the discrete global optimizaion of equivalent factor. A numerical simulation is conducted on all performance parameters of real?time control strategy for time?varying equivalent factor and the DP for globally optimal control strategy in normal condition, verifying the effectiveness of the extraction algorithm for time?varying equivalent factor and the feasibility of the selecting method for the initial value of equivalent factor.

Key words: hybrid electric vehicle, dynamic programing, equivalent consumption minimization strategy, time?varying equivalent factor