油液混合动力挖掘机多控制策略参数匹配仿真
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摘要
为提高油液混合动力系统挖掘机的节能效果,研究了辅助动力系统多控制策略的参数匹配问题。根据动力源驱动结构、工作原理及负载特性,提出稳定发动机工作点+恒排量释放、稳定发动机工作点+恒扭矩释放、稳定主泵工作点+恒排量释放及稳定主泵工作点+恒扭矩释放四种控制策略,并建立了系统主要元件数学模型,仿真对比分析四种控制策略的节能效果,得出稳定发动机工作点+恒排量释放节能效果最优的结论,并依此确定辅助马达参数。仿真结果表明:较原系统,参数匹配后的混合动力系统节油率提高了9.8%,工作效率提升了9.72%。
In order to improve the energy saving effectiveness on an oil-hydraulic hybrid excavator,the parameter matching was studied based on multi control strategies of the auxiliary power systems.According to the driving structures,working principles and load characteristics,four kinds of control strategies were proposed including stabilizing engine operating points with constant displacement release,stabilizing engine operating points with constant torque release,stabilizing main pump operating points with constant displacement release,stabilizing main pump operating point with constant torque release.Then a mathematical model of the system main components was established.Compared the energy saving effectiveness of the four control strategies through simulations and analyses,coming to a conclusion that energy saving effectiveness of stabilizing main pump operating points with constant displacement release is optimal,and according to this fact,the auxiliary motor parameters are determined.Simulation results show that,compared with the original system,the hybrid system's fuel saving rate has increased by 9.8%,and work efficiency has increased by 9.72%.
In order to improve the energy saving effectiveness on an oil-hydraulic hybrid excavator,the parameter matching was studied based on multi control strategies of the auxiliary power systems.According to the driving structures,working principles and load characteristics,four kinds of control strategies were proposed including stabilizing engine operating points with constant displacement release,stabilizing engine operating points with constant torque release,stabilizing main pump operating points with constant displacement release,stabilizing main pump operating point with constant torque release.Then a mathematical model of the system main components was established.Compared the energy saving effectiveness of the four control strategies through simulations and analyses,coming to a conclusion that energy saving effectiveness of stabilizing main pump operating points with constant displacement release is optimal,and according to this fact,the auxiliary motor parameters are determined.Simulation results show that,compared with the original system,the hybrid system's fuel saving rate has increased by 9.8%,and work efficiency has increased by 9.72%.
引文
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[8]赵鹏宇,陈英龙,周华,等.油液混合动力挖掘机势能回收及能量管理策略[J].浙江大学学报(工学版),2016,50(5):893-901.ZHAO Pengyu,CHEN Yinglong,ZHOU Hua,et al.Potential Energy Recovery and Energy Management Strategy of Hydraulic Hybrid Excavators[J].Journal of Zhejiang University(Engineering Science),2016,50(5):893-901.
[9]赵鹏宇,陈英龙,周华.油液混合动力工程机械系统及控制策略研究综述[J].浙江大学学报(工学版),2016,50(3):449-459.ZHAO Pengyu,CHEN Yinglong,ZHOU Hua.Overview of Hydraulic Hybrid Engineering Machinery System and Control Strategy[J].Journal of Zhejiang University(Engineering Science),2016,50(3):449-459.
[10]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),2016,50(1):70-77.XIAO Yang,GUAN Cheng,WANG Fei.Energy Management Strategy for Torque Coupling Based Hydraulic Hybrid Excavator[J].Journal of Zhejiang University(Engineering Science),2016,50(1):70-77.
[11]解泽哲.扭矩耦合式挖掘机液压混合动力系统设计与控制策略研究[D].杭州:浙江大学,2015.XIE Zezhe.Design of Torque Coupling Excavator Hydraulic Hybrid System and Control Method Research[D].Hangzhou:Zhejiang University,2015.
[12]杜晓东.挖掘机液压能回收及释放电液系统的研究[D].杭州:浙江大学,2013.DU Xiaodong.Research on Energy Recovery and Release Electro-hydraulic System of Excavator[D].Hangzhou:Zhejiang University,2013.
[2]王庆丰.油电混合动力挖掘机的关键技术研究[J].机械工程学报,2013,49(20):123-129.WANG Qingfeng.Research on Key Technology of Oil-electric Hybrid Excavator[J].Journal of Mechanical Engineering,2013,49(20):123-129.
[3]管成,林名润,吴超,等.油液混合动力挖掘机动臂势能回收系统[J].计算机集成制造系统,2012,18(3):583-589.GUAN Cheng,LIN Mingrun,WU Chao,et al.Recovery/system of Boom Potential Energy in Hydraulic Hybrid Excavators[J].Computer Integrated Manufacturing Systems,2012,18(3):583-589.
[4]林添良,刘强.液压混合动力挖掘机动力系统的参数匹配方法[J].上海交通大学学报,2013,47(5):728-733.LIN Tianliang,Liu Qiang.Method of Parameter Matching for Hydraulic Hybrid System for Excavators[J].Journal of Shanghai Jiao Tong University,2013,47(5):728-733.
[5]林潇,管成,潘双夏,等.并联式混合动力液压挖掘机参数匹配方法[J].农业机械学报,2009,40(6):28-32.LIN Xiao,GUAN Cheng,PAN Shuangxia,et al.Parameters Matching Method for Parallel Hydraulic Hybrid Excavators[J].Transactions of the Chinese Society for Agricultural Machinery,2009,40(6):28-32.
[6]林添良,刘强.基于蓄能器的挖掘机节能驱动系统的参数匹配[J].机床与液压,2013,41(13):1-4.LIN Tianliang,LIU Qiang.Research on Parameter Matching for Energy-saving System of Excavators Based on Hydraulic Accumulator[J].Machine Tool&Hydraulics,2013,41(13):1-4.
[7]肖清,王庆丰.液压挖掘机混合动力系统的参数匹配方法[J].中国公路学报,2008,21(1):121-126.XIAO Qing,WANG Qingfeng.Parameter Matching Method for Hybrid Power System of Hydraulics Excavator[J].China Journal of Highway and Transport,2008,21(1):121-126.
[8]赵鹏宇,陈英龙,周华,等.油液混合动力挖掘机势能回收及能量管理策略[J].浙江大学学报(工学版),2016,50(5):893-901.ZHAO Pengyu,CHEN Yinglong,ZHOU Hua,et al.Potential Energy Recovery and Energy Management Strategy of Hydraulic Hybrid Excavators[J].Journal of Zhejiang University(Engineering Science),2016,50(5):893-901.
[9]赵鹏宇,陈英龙,周华.油液混合动力工程机械系统及控制策略研究综述[J].浙江大学学报(工学版),2016,50(3):449-459.ZHAO Pengyu,CHEN Yinglong,ZHOU Hua.Overview of Hydraulic Hybrid Engineering Machinery System and Control Strategy[J].Journal of Zhejiang University(Engineering Science),2016,50(3):449-459.
[10]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),2016,50(1):70-77.XIAO Yang,GUAN Cheng,WANG Fei.Energy Management Strategy for Torque Coupling Based Hydraulic Hybrid Excavator[J].Journal of Zhejiang University(Engineering Science),2016,50(1):70-77.
[11]解泽哲.扭矩耦合式挖掘机液压混合动力系统设计与控制策略研究[D].杭州:浙江大学,2015.XIE Zezhe.Design of Torque Coupling Excavator Hydraulic Hybrid System and Control Method Research[D].Hangzhou:Zhejiang University,2015.
[12]杜晓东.挖掘机液压能回收及释放电液系统的研究[D].杭州:浙江大学,2013.DU Xiaodong.Research on Energy Recovery and Release Electro-hydraulic System of Excavator[D].Hangzhou:Zhejiang University,2013.