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浙江大学学报(工学版)
能源与机械工程     
扭矩耦合式油液混合动力挖掘机能量管理
肖扬1,2,管成1,王飞1
1.浙江大学 机械设计研究所,浙江 杭州 310027; 2.联合汽车电子有限公司,上海 201206
Energy management strategy for torque coupling based hydraulic hybrid excavator
XIAO Yang1,2, GUAN Cheng1, WANG Fei1
1.Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China;2.United Automotive Electronic Systems Limited Company, Shanghai 201206, China
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摘要:

为了优化扭矩耦合式油液混合动力挖掘机(HHE)系统的能量管理策略,提出基于拉格朗日乘数法的在线能量优化管理策略.基于最优控制理论,定义系统节能优化目标函数与约束.以实际采集的挖掘机作业工况作为负载输入,利用拉格朗日乘数法对目标函数进行快速求解,得到最优权值以及离线优化能量管理策略.为了对能量管理策略进行实时应用,使用间隔采样移动窗口法来估计权值,引入基于蓄能器能量状态(SOC)的修正函数,得到对蓄能器SOC具有自适应性的在线自适应能量管理策略.结果表明,提出的在线自适应能量管理策略可以被实时应用,通过选取合适的修正敏感系数后,能够对蓄能器SOC进行边界约束,并达到与离线优化相近的节能表现(18.1%).

Abstract:

 An online energy management strategy based on Lagrange multiplier method was proposed in order to generate the optimal energy management for torque coupling based hydraulic hybrid excavator (HHE) system. The system cost function and terminal constraints were formulated, and the load data collected from actual excavator was used as system input. Then the optimization problem was solved using Lagrange multiplier (LM) method to generate the optimal equivalent weight and optimal offline energy management strategy. For real time implementation, an LM based interval sampling moving window method for equivalent weight estimation, as well as an accumulator state of charge (SOC) based modification function, were applied to generate the online adaptive energy management strategy. Results show that the proposed energy management strategy can be used in real time, and is adaptive to the working conditions and accumulator SOC. The online strategy can achieve the same level of fuel economy (18.1%) as deterministic offline optimization.

出版日期: 2016-03-31
:  TH 137  
基金资助:

国家“863”高技术研究发展计划资助项目(2010AA044401).

通讯作者: 管成,男,副教授. ORCID: 0000 0002 4690 4385.     E-mail: guan@zju.edu.cn
作者简介: 肖扬(1988-),男,博士,从事混合动力工程机械的研究.ORCID: 0000 0002 3323 8715.E-mail:11025061@zju.edu.cn
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引用本文:

肖扬,管成,王飞. 扭矩耦合式油液混合动力挖掘机能量管理[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.01.011.

XIAO Yang, GUAN Cheng, WANG Fei. Energy management strategy for torque coupling based hydraulic hybrid excavator. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.01.011.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.01.011        http://www.zjujournals.com/eng/CN/Y2016/V50/I1/70

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