Analysis of Power Coupling Device with Dual Planetary Gear Set based on Dynamic Programming

Shaohua Wang; Sheng Zhang

doi:10.16578/j.issn.1004.2539.2019.06.022

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Analysis of Power Coupling Device with Dual Planetary Gear Set based on Dynamic Programming

Test·Analysis | 更新时间：2022-10-01

- Analysis of Power Coupling Device with Dual Planetary Gear Set based on Dynamic Programming
- Journal of Mechanical Transmission Vol. 43, Issue 6, Pages: 125-130(2019)
- 作者机构：
  
  1.江苏大学汽车与交通工程学院，江苏镇江 212013
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2019.06.022
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汪少华,张晟.基于动态规划算法的双行星排式动力耦合机构分析[J].机械传动,2019,43(06):125-130.

Wang Shaohua,Zhang Sheng.Analysis of Power Coupling Device with Dual Planetary Gear Set based on Dynamic Programming[J].Journal of Mechanical Transmission,2019,43(06):125-130.
汪少华,张晟.基于动态规划算法的双行星排式动力耦合机构分析[J].机械传动,2019,43(06):125-130. DOI： 10.16578/j.issn.1004.2539.2019.06.022.

Wang Shaohua,Zhang Sheng.Analysis of Power Coupling Device with Dual Planetary Gear Set based on Dynamic Programming[J].Journal of Mechanical Transmission,2019,43(06):125-130. DOI： 10.16578/j.issn.1004.2539.2019.06.022.

摘要

针对不同构型的双行星排式混合动力汽车动力耦合机构，建立等效杠杆分析其功率分流特性以及系统传动效率，同时划分混合动力系统常用工作模式。在此基础上，搭建混合动力传动系统中发动机、电机、电池等动力部件模型，通过引入动态规划算法，以电池SOC为状态变量，以发动机转矩、转速为控制变量，设置整车油耗为目标函数，进行全局寻优。仿真结果表明，在NEDC工况下，相比于输入分流式，复合分流式构型在燃油经济性方面拥有更出色的表现。

Abstract

Aiming at two different kinds of power coupling devices with dual planetary gear sets， the equivalent lever is established to analyze the power split characteristics and the transmission efficiency of the devices. At the same time， the common operation modes of hybrid systems with these power coupling devices are divided. On this basis, the power component model of the engine，motors and the battery are also established. By introducing dynamic programming algorithm, taking the battery SOC as state variable and engine torque and speed as control variable, the fuel consumption of the vehicle is set as the objective function for global optimization. Simulation results show that, under NEDC driving cycle, the compound-split power coupling device has superior fuel economy to the input-split power coupling device.

关键词

双行星排混合动力汽车动态规划燃油经济性

Keywords

Dual planetary gear setHybrid electric vehicleDynamic programmingFuel economy

references

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