基于伺服电机驱动泵控缸技术的挖掘机性能研究
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摘要
为了降低工程机械动力系统的能耗、噪声和废油处理对环境的影响,以某型号液压挖掘机为研究对象,采用无节流损失的伺服电机驱动定量泵的直驱液压技术替代传统的发动机-变量泵-多路阀-执行元件的阀控技术;建立工作装置动力学、泵控缸液压系统、伺服电机、控制系统多学科领域的系统模型,通过典型挖掘循环下的仿真分析研究其系统跟踪性能、能耗和系统效率。研究成果对工程机械的新能源化(纯电驱动或混合动力化)具有理论和实际意义。
A conventional valve controlled system of construction machinery usually consists of a diesel engine,a variable displacement pump,multi-way valves and actuators. Aiming to reduce energy consumption,noise and pollution produced by waste oil of construction machinery,we replace the conventional valve controlled system of a hydraulic excavator with a pump controlled cylinder driven by a servo-motor. A multi-domain model for the excavator is built,consisting of a working-set,a hydraulic system,an electric motor and a control system. The simulation of the proposed system is carried out. Tracking performance,energy consumptions and energy efficiency of the proposed system are analyzed through simulation analysis under typical mining cycles. The research results have theoretical and practical significance for new energy utilization of construction machinery( pure electric drive or hybrid power utilization).
A conventional valve controlled system of construction machinery usually consists of a diesel engine,a variable displacement pump,multi-way valves and actuators. Aiming to reduce energy consumption,noise and pollution produced by waste oil of construction machinery,we replace the conventional valve controlled system of a hydraulic excavator with a pump controlled cylinder driven by a servo-motor. A multi-domain model for the excavator is built,consisting of a working-set,a hydraulic system,an electric motor and a control system. The simulation of the proposed system is carried out. Tracking performance,energy consumptions and energy efficiency of the proposed system are analyzed through simulation analysis under typical mining cycles. The research results have theoretical and practical significance for new energy utilization of construction machinery( pure electric drive or hybrid power utilization).
引文
[1]权龙.泵控缸电液技术研究现状、存在问题及创新解决方案[J].机械工程学报,2008,44(11):87-92.QUAN Long.Current State,Problems and the Innovative Solution of Electro-hydraulic Technology of Pump Controlled Cylinder[J].Chinese Journal of Mechanical Engineering,2008,44(11):87-92.
[2]李艳杰,于安才,姜继海.挖掘机节能液压控制系统分析与应用[J].液压与气动,2010,(8):69-74.LI Yanjie,YU Ancai,JIANG Jihai.Analysis and Application of Energy-saving Hydraulic Control System for Excavator[J].Chinese Hydraulics&Pneumatics,2010,(8):69-74.
[3]赵虎,高有山,权龙.工程机械泵控液压缸研究现状及应用[J].液压与气动,2013,(11):67-70.ZHAO Hu,GAO Youshan,QUAN Long.The Research Status and Application of Pump-controlled Hydraulic Cylinder for Construction Machinery[J].Chinese Hydraulics&Pneumatics,2013,(11):67-70.
[4]张红娟,权龙,李斌.注塑机电液控制系统能量效率对比研究[J].机械工程学报,2012,48(8):180-187.ZHANG Hongjuan,QUAN Long,LI Bin.Comparative Study on Energy Efficiency of the Electro-hydraulic Control System in Injection Molding Machine[J].Journal of Mechanical Engineering,2012,48(8):180-187.
[5]KAGOSHIMA M,KOMIYAMA M,NANJO T,et al.Development of New Hybrid Excavator[J].Kobelco Technology Review,2007,27(27):39-42.
[6]RAHMFELD R,IVANTYSYNOVA M.Displacement Controlled Linear Actuator with Differential Cylinder-a Way to Save Primary Energy in Mobile Machines[C]//5th International Conference on Fluid Power Transmission and Control,Ostrvav,2001:296-301.
[7]ZIMMERMAN J D,PELOSI M,WILLIAMSON C A,et al.Energy Consumption of an LS Excavator Hydraulic System[C]//ASME 2007 International Mechanical Engineering Congress and Exposition,2007:117-126.
[8]林添良,叶月影,刘强.挖掘机动臂闭式节能驱动系统参数匹配[J].农业机械学报,2014,45(1):21-26.LIN Tianliang,YE Yueying,LIU Qiang.Parameter Matching for a Closed-loop Energy-saving System of Excavators[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(1):21-26.
[2]李艳杰,于安才,姜继海.挖掘机节能液压控制系统分析与应用[J].液压与气动,2010,(8):69-74.LI Yanjie,YU Ancai,JIANG Jihai.Analysis and Application of Energy-saving Hydraulic Control System for Excavator[J].Chinese Hydraulics&Pneumatics,2010,(8):69-74.
[3]赵虎,高有山,权龙.工程机械泵控液压缸研究现状及应用[J].液压与气动,2013,(11):67-70.ZHAO Hu,GAO Youshan,QUAN Long.The Research Status and Application of Pump-controlled Hydraulic Cylinder for Construction Machinery[J].Chinese Hydraulics&Pneumatics,2013,(11):67-70.
[4]张红娟,权龙,李斌.注塑机电液控制系统能量效率对比研究[J].机械工程学报,2012,48(8):180-187.ZHANG Hongjuan,QUAN Long,LI Bin.Comparative Study on Energy Efficiency of the Electro-hydraulic Control System in Injection Molding Machine[J].Journal of Mechanical Engineering,2012,48(8):180-187.
[5]KAGOSHIMA M,KOMIYAMA M,NANJO T,et al.Development of New Hybrid Excavator[J].Kobelco Technology Review,2007,27(27):39-42.
[6]RAHMFELD R,IVANTYSYNOVA M.Displacement Controlled Linear Actuator with Differential Cylinder-a Way to Save Primary Energy in Mobile Machines[C]//5th International Conference on Fluid Power Transmission and Control,Ostrvav,2001:296-301.
[7]ZIMMERMAN J D,PELOSI M,WILLIAMSON C A,et al.Energy Consumption of an LS Excavator Hydraulic System[C]//ASME 2007 International Mechanical Engineering Congress and Exposition,2007:117-126.
[8]林添良,叶月影,刘强.挖掘机动臂闭式节能驱动系统参数匹配[J].农业机械学报,2014,45(1):21-26.LIN Tianliang,YE Yueying,LIU Qiang.Parameter Matching for a Closed-loop Energy-saving System of Excavators[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(1):21-26.