PQ控制变量泵比例换向阀参数对压力特性的影响仿真研究
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摘要
针对电液比例压力流量控制轴向变量柱塞泵,利用AMESim软件建立其整体模型。对该变量泵压力特性进行了仿真研究,并重点考察了电液比例换向阀参数的变化对泵压力特性的影响。仿真结果表明,电液比例换向阀的弹簧刚度和弹簧预紧力的设定值越大,变量泵输出压力的稳态值也越大;在避免比例换向阀的阀芯质量过小基础上,尽量减小阀芯质量,并设定适当大小的阻尼孔孔径和阀芯直径,可减小输出压力的超调量,改善变量泵的工作品质。
Aimed at an electro-hydraulic proportional axial variable piston pump with pressure and flow control,its entire model is built by AMESim. Pressure characteristics of the variable pump are researched by simulation,and the influence on pressure characteristics of pump is studied in particular when parameters of electro-hydraulic proportional reversing valve are changed. The simulation reveals that the larger we set the value of spring stiffness and spring prestressing force in electro-hydraulic proportional reversing valve,the larger the steady values of output pressure in variable pump will be; on the basis of avoiding the mass of proportional reversing valve being too small,we try to reduce the mass and select proper diameters of valve and damping hole,which can decrease output pressure overshoot and improve working quality of variable pump.
Aimed at an electro-hydraulic proportional axial variable piston pump with pressure and flow control,its entire model is built by AMESim. Pressure characteristics of the variable pump are researched by simulation,and the influence on pressure characteristics of pump is studied in particular when parameters of electro-hydraulic proportional reversing valve are changed. The simulation reveals that the larger we set the value of spring stiffness and spring prestressing force in electro-hydraulic proportional reversing valve,the larger the steady values of output pressure in variable pump will be; on the basis of avoiding the mass of proportional reversing valve being too small,we try to reduce the mass and select proper diameters of valve and damping hole,which can decrease output pressure overshoot and improve working quality of variable pump.
引文
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[7]王立杰.基于AMESim的电液比例方向阀流量控制的研究及仿真[J].机械工程师,2015,(6):48-50.WANG Lijie.Research and Simulation on Flow Control of Electro-hydraulic Proportional Direction Valve Based on AMESim[J].Mechanical Engineer,2015,(6):48-50.
[8]谭娟,朱玉泉,黄正东.基于AMESim的柱塞泵特性仿真研究[J].液压气动与密封,2015,35(10):17-19.TAN Juan,ZHU Yuquan,HUANG Zhengdong.Simulation Research of a Piston Pump Characteristic Based on AMESim[J].Hydraulics Pneumatics&Seals,2015,35(10):17-19.
[9]WANG Hui,MENG Fanlong.Simulation and Optimal Design of Cylinder Block of Axial Piston Pump Based on ANSYS[C].2011 International Conference on Computer-aided Material and Engineering,ICCME 2011,2011:368-372.
[2]张灿罡.恒功率轴向柱塞泵变量机构的研究[D].兰州:兰州理工大学,2016.ZHANG Cangang.Research on Variable Displacement Mechanism of Constant Power Axial Piston Pump[D].Lanzhou:Lanzhou University of Technology,2016.
[3]董磊.A10VSO变量柱塞泵的动态特性仿真研究[D].大连:大连理工大学,2015.DONG Lei.Dynamic Simulation of Al OVSO Variable Piston Pump[D].Dalian:Dalian University of Technology,2015.
[4]范海波,金健,邢科礼,等.基于AMESim电液比例变量柱塞泵仿真[J].流体传动与控制,2013,(1):11-14.FAN Haibo,JIN Jian,XING Keli,et al.Simulation of Electro-hydraulic Proportional Variable Displacement Piston Pump Based on AMESim[J].Fluid Power Transmission and Control,2013,(1):11-14.
[5]刚中孝.轴向柱塞泵变量控制特性仿真研究[D].大连:大连理工大学,2015.GANG Zhongxiao.Simulation and Research on Axial Piston Pump[D].Dalian:Dalian University of Technology,2015.
[6]闫政,权龙,张晓刚.电液比例变量泵动态特性仿真与试验[J].农业机械学报,2016,47(5):380-387.YAN Zheng,QUAN Long,ZHANG Xiaogang.Simulation and Experimental Research on Dynamic Characteristics of Electro-hydraulic Proportional Variable Pump[J].Transactions of The Chinese Society of Agricultural,2016,47(5):380-387.
[7]王立杰.基于AMESim的电液比例方向阀流量控制的研究及仿真[J].机械工程师,2015,(6):48-50.WANG Lijie.Research and Simulation on Flow Control of Electro-hydraulic Proportional Direction Valve Based on AMESim[J].Mechanical Engineer,2015,(6):48-50.
[8]谭娟,朱玉泉,黄正东.基于AMESim的柱塞泵特性仿真研究[J].液压气动与密封,2015,35(10):17-19.TAN Juan,ZHU Yuquan,HUANG Zhengdong.Simulation Research of a Piston Pump Characteristic Based on AMESim[J].Hydraulics Pneumatics&Seals,2015,35(10):17-19.
[9]WANG Hui,MENG Fanlong.Simulation and Optimal Design of Cylinder Block of Axial Piston Pump Based on ANSYS[C].2011 International Conference on Computer-aided Material and Engineering,ICCME 2011,2011:368-372.