基于功率内分流的复合式双流传动系统及其换挡控制研究

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英文篇名：Research on combined hydro-mechanical transmission system based on internal power split and its shift control 作者：侯郭顺 ; 孙保群 ; 陈杰峰 ; 杨瑞恒 英文作者：HOU Guoshun;SUN Baoqun;CHEN Jiefeng;YANG Ruiheng;Institute of Automobile Engineering Technology, Hefei University of Technology; 关键词：内分流 ; 复合式 ; 液压机械双流传动系统(HMT) ; 液压效率 ; 换挡控制 ; 仿真 ; 优化 英文关键词：internal split;;combined;;hydro-mechanical transmission(HMT);;hydraulic efficiency;;shift control;;simulation;;optimization 中文刊名：HEFE 英文刊名：Journal of Hefei University of Technology(Natural Science) 机构：合肥工业大学汽车工程技术研究院; 出版日期：2019-05-28 出版单位：合肥工业大学学报(自然科学版) 年：2019 期：v.42;No.313 基金：科技部重点研发计划资助项目(2016YFD0700604;2016YFD0700605);; 安徽省重大专项资助项目(2017030701043) 语种：中文; 页：HEFE201905006 页数：10 CN：05 ISSN：34-1083/N 分类号：38-46+112

摘要

文章基于内分流式液压机械双流传动系统(hydro-mechanical transmission,HMT)的基本特性,借鉴双离合变速器传动原理,提出了一种复合式液压机械双流传动系统(combined hydro-mechanical transmission,CHMT)方案,介绍了CHMT系统2种换挡控制方法,重点分析了由低挡HMT换入高挡HMT工况的换挡控制过程;在综合考虑液压泵和液压马达效率时,以某拖拉机作为应用平台,利用Matlab/Simulink建立了CHMT系统模型。通过仿真分析,验证了该换挡控制方案的可行性;并在此基础上,提出和验证了通过对液压元件及控制过程的优化能够进一步改善换挡品质的方案,更好地满足了负载车辆的换挡要求。
        Based on the basic characteristics of hydro-mechanical transmission(HMT) system with internal power split, and in view of the principle of dual-clutch transmission, a combined hydro-mechanical transmission(CHMT) system scheme is presented. Two shift control methods of the CHMT system are introduced. And the shift control process from low-gear HMT to high-gear HMT is analyzed in detail. Considering the efficiency of hydraulic pump and hydraulic motor, a mathematical model of the CHMT system is established by Matlab/Simulink which selects a certain type of tractor as an application platform. Through the simulation analysis, the feasibility of the shift control scheme is verified. And on this basis, it is proposed and verified that the optimization of hydraulic components and control process can further improve the shift quality and fulfill the requirements of the vehicle shift under load.

引文

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