基于动态规划的插电式混合动力汽车全局最优控制策略研究

张冰战 李开放

Automobile Technology - - CONTENTS -

张冰战 李开放230009) (合肥工业大学,合肥 【摘要】针对某款插电式混合动力汽车,基于动态规划(DP)算法建立了汽车全局最优控制策略。通过将每一时刻SOC初始取值范围均选定为0.6~0.8,对DP程序通用性和计算效率进行了改进。选择能够代表各种道路类型的11种标准工况以及UDDS工况进行仿真验证,结果表明,所编写DP程序通用性良好,汽车在全局最优控制策略下燃油经济性相对于传统电机助力控制策略有明显的提升。

主题词:插电式混合动力汽车 全局最优控制策略 动态规划 燃油经济性U469.72 A 10.19620/j.cnki.1000-3703.20170789中图分类号: 文献标识码: DOI: Research on Global Optimal Control Strategy of PHEV Based on Dynamic Programming

Zhang Bingzhan, Li Kaifang Hefei University of Technology, Hefei 230009) ( Abstract Based on the Dynamic Programming (DP) algorithm, a global optimal control strategy was constructed for a【 】plug- in hybrid vehicle. By selecting the initial value range of SOC at each moment at 0.6~0.8, the universality and computational efficiency of the DP algorithm were improved. 11 standard working conditions that represented various road types and UDDS working conditions were selected for simulation verification. The results show that the DP program has good versatility, and fuel economy of the vehicle under the global optimal control strategy is obviously improved compared with the traditional motor assisted control strategy.

Key words: PHEV, Global optimal control strategy, Dynamic programming,Fuel economy 1 前言

Plug- in Hybrid Electric

插电式混合动力汽车(

Vehicle, PHEV)

由于兼具传统燃油汽车和纯电动汽车的优点,在纯电动汽车和燃料电池汽车技术尚未成熟及充电等基础设施未普及之前,成为了各国政府和汽车行

PHEV业关注的重点[1- 3]。能量管理策略作为 的核心技术之一,是车辆具有良好性能的基础,其核心是解决发动机和电机在各种行驶工况下的功率分配问题[4- 5]。本

PHEV 11

文以某款 为研究对象,选取代表驾驶环境的种标准工况,以油耗最小为目标函数,同时考虑驾驶舒

DP

适性,利用 算法求解各标准工况下全局最优控制策

ADVISOR

略,并利用车辆高级仿真器 平台对控制策略 进行了仿真验证。

2 PHEV整车模型2.1 PHEV主要参数及动力系统总成

PHEV

某款 结构为单轴并联式,其动力系统结构如1 1

图 所示,整车及零部件主要参数如表 所列。

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