电液比例变量泵动态特性仿真与试验
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摘要
为了提供一个准确的电液比例变量泵动态元件模型,应用在设计系统中以提高系统的精确性,首先对某型号电液比例变量泵进行机械结构参数测绘,确立电液比例变量泵的基本结构参数,然后根据泵、阀性能参数,利用AMESim软件平台建立了比例流量伺服阀和变量泵的仿真模型。通过对压力、流量、比例阀开口量等多种参数的组合控制,对电液比例变量泵动态特性进行仿真测试和试验验证,得到了相吻合的动态响应曲线,验证了模型的准确性,并直观反映出流量、压力双控下,比例流量伺服阀阀芯、斜盘摆角及其系统压力各种变化的动态响应情况。进一步对电液比例变量泵仿真模型中比例流量伺服阀响应速度、阀口开度增益、控制活塞直径等参数对斜盘动态特性影响进行了研究,结果表明比例流量伺服阀响应越高、阀口开度增益越大、控制活塞直径越小,斜盘动态响应越快,但阀口开度增益过大,会导致斜盘响应超调增加,影响斜盘的动态特性。
In order to provide a precise model of dynamic components in the electro-hydraulic proportional variable pump and improve the accuracy when design a system,firstly,the mechanical structure parameters of a certain electro-hydraulic proportional variable pump were measured and the basic structural parameters of the pump were confirmed. Then a single model of a piston and the model of the proportional flow servo valve and variable pump were built in AMESim software platform according to the actual parameters of the valve and pump. And the whole model of electro-hydraulic proportional variable pump was constructed based on the sub models. Through the coordinated control of pressure,flow and proportional valve opening,comprehensive simulation test and experimental verification of the dynamic characteristics of the pump were carried out. The dynamic response of the simulation was consistent with the experimental data,which verified the accuracy of the model. The dynamic response of the proportional flow servo valve spool,the angle of the swash plate and the system pressure could be observed directly in the model. The response speed of proportional flow servo valve,valve opening gain and diameter of control piston in this simulation model were adjusted further so effects of these parameters on the dynamic response of the swash plate were obtained. The results show that the swash plate will response more quickly with bigger valve opening gain,faster proportional flow servo valve response,and smaller diameter of the control piston. However,when the valve opening gain gets too large,the swashplate overshoot will increase and it will affect the dynamic characteristics of the swash plate. In this paper,an accurate simulation model was provided for the theoretical research and engineering selection of the electro-hydraulic proportional variable pump.
In order to provide a precise model of dynamic components in the electro-hydraulic proportional variable pump and improve the accuracy when design a system,firstly,the mechanical structure parameters of a certain electro-hydraulic proportional variable pump were measured and the basic structural parameters of the pump were confirmed. Then a single model of a piston and the model of the proportional flow servo valve and variable pump were built in AMESim software platform according to the actual parameters of the valve and pump. And the whole model of electro-hydraulic proportional variable pump was constructed based on the sub models. Through the coordinated control of pressure,flow and proportional valve opening,comprehensive simulation test and experimental verification of the dynamic characteristics of the pump were carried out. The dynamic response of the simulation was consistent with the experimental data,which verified the accuracy of the model. The dynamic response of the proportional flow servo valve spool,the angle of the swash plate and the system pressure could be observed directly in the model. The response speed of proportional flow servo valve,valve opening gain and diameter of control piston in this simulation model were adjusted further so effects of these parameters on the dynamic response of the swash plate were obtained. The results show that the swash plate will response more quickly with bigger valve opening gain,faster proportional flow servo valve response,and smaller diameter of the control piston. However,when the valve opening gain gets too large,the swashplate overshoot will increase and it will affect the dynamic characteristics of the swash plate. In this paper,an accurate simulation model was provided for the theoretical research and engineering selection of the electro-hydraulic proportional variable pump.
引文
1王成宾.伺服变量泵和泵控差动缸系统理论分析及静动态特性研究[D].太原:太原理工大学,2014.WANG Chengbin.Theoretical analysis and static and dynamic characteristics study on servo variable piston pump and pumpcontrolled differential cylinder system[D].Taiyuan:Taiyuan University of Technology,2014.(in Chinese)
2 TASNER T,LES K,TIC V,et al.Energy efficiency of different electrohydraulic drives[C]∥Proceedings of the 9th International Fluid Power Conference,2014:14-25.
3 何智,刘庆庭,区颖刚.甘蔗收获机双向变量柱塞泵动态响应特性仿真[J].农业机械学报,2012,43(10):329-336.HE Zhi,LIU Qingting,OU Yinggang.Dynamic response characteristic simulation of double-action variable displacement plunger pump for sugarcane harvester[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(10):329-336.(in Chinese)
4 张德胜,王海宇,施卫东,等.轴流泵多工况压力脉动特性试验[J].农业机械学报,2014,45(11):139-146.ZHANG Desheng,WANG Haiyu,SHI Weidong,et al.Experimental investigation of pressure fluctuation with multiple flow rates in scaled axial flow pump[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(11):139-146.(in Chinese)
5 张红娟.变转速泵控差动缸及低能耗注塑机技术研究[D].太原:太原理工大学,2011.ZHANG Hongjuan.Study on differential cylinder system controlled with variable speed pump and technology of low-energy injection molding machine[D].Taiyuan:Taiyuan University of Technology,2011.(in Chinese)
6 石金艳,范芳洪,周会,等.负流量控制机构伺服阀参数对变量泵的动态特性影响研究[J].机床与液压,2015,43(1):61-63.SHI Jinyan,FAN Fanghong,ZHOU Hui,et al.Study on effect of negative flow control mechanism servo valve parameters on the dynamical characteristics of variable-displacement pump[J].Machine Tool&Hydraulics,2015,43(1):61-63.(in Chinese)
7 KASSEM S A,BAHR M K.Effect of port plate silencing grooves on performance of swash plate axial piston pumps[C]∥7th Mechanical Design and Production Congress MDP7,2000:139-148.
8 KIM Jong Hyeok,JEON Chang Soo,HONG Yeh Sun.Constant pressure control of a swash plate type axial piston pump by varying both volumetric displacement and shaft speed[J].International Journal of Precision Engingeering and Manufacturing,2015,16(11):2395-2401.
9 KUMAR N,DASGUPTA K,GHOSHAL S K.Dynamic analysis of a closed-circuit hydrostatic summation drive using bent axis motors[J].Proc.IMech.E.,Part I:Journal of Systems and Control Engineering,2015,229(8):761-777.
10 KEMMETMULLER W,FUCHSHUMER F,KUGI A.Nonlinear pressure control of self-supplied variable displacement axial piston pumps[J].Control Engineering Practice,2010,18(3):84-93.
11 WANG L K,BOOK W J,HUGGINS J D.A hydraulic circuit for single rod cylinders[J].Journal of Dynamic Systems,Measurement and Control,2012,134(1):1-11.
12 吴文海.电液比例变量柱塞泵的动态仿真[D].成都:西南交通大学,2006.WU Wenhai.Dynamic simulation of electro-hydraulic proportional variable piston pump[D].Chengdu:Southwest Jiaotong University,2006.(in Chinese)
13 代平之.电磁卸荷恒压变量泵静动态特性实验及应用研究[D].北京:中国石油大学,2007.DAI Pingzhi.The static-dynamic characteristic experimental research and its application of the electromagnetic valve relieving constant pressure variable pump[D].Beijing:China University of Petroleum,2007.(in Chinese)
14 胡文静.恒压变量柱塞泵的特性仿真与试验[D].大连:大连理工大学,2013.HU Wenjing.Simulation and test on the characteristics of constant-pressure variable displacement axial piston pump[D].Dalian:Dalian University of Technology,2013.(in Chinese)
15 张德胜,耿琳琳,施卫东,等.轴流泵水力模型压力脉动和振动特性试验[J].农业机械学报,2015,46(6):66-72.ZHANG Desheng,GENG Linlin,SHI Weidong,et al.Experimental investigation on pressure fluctuation and vibration in axialflow pump model[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(6):66-72.(in Chinese)
16 HUANG J,YAN Z,QUAN L.Characteristics of delivery pressure in the axial piston pump with combination of variable displacement and variable speed[J].Proc.IMech.E.,Part I:Journal of Systems and Control Engineering,2015,229(7):599-613.
17 柯兵,卢岳良.高压泵压力脉动抑制技术研究[J].液压与气动,2013(10):90-95.KE Bing,LU Yueliang.Suppression technique of pressure pulsation for high-pressure pump[J].Chinese Hydraulics&Pneumatics,2013(10):90-95.(in Chinese)
18 任丹萍,张鑫彬,王斌.伺服机构恒压变量泵压力脉动分析[J].上海航天,2014,31(3):64-68.REN Danping,ZHANG Xinbin,WANG Bin.Analysis on pressure pulsation of constant-pressure variable pump in servo mechanism[J].Aerospace Shanghai,2014,31(3):64-68.(in Chinese)
19 杨阳,权龙,杨敬.轴向柱塞泵非止点配流窗口过渡区压力脉动特性分析[J].机械工程学报,2011,47(24):128-134.YANG Yang,QUAN Long,YANG Jing.Pressure pulsation characteristic analysis of the non-dead spots transition zone between flow distribution windows of axial piston pump[J].Journal of Mechanical Engineering,2011,47(24):128-134.(in Chinese)
20 秦彦凯.电液比例变排量轴向柱塞泵控制特性研究[D].太原:太原理工大学,2012.QIN Yankai.Research on the control characteristics of electro-hydraulic proportional variable displacement axial piston pump[D].Taiyuan:Taiyuan University of Technology,2012.(in Chinese)
2 TASNER T,LES K,TIC V,et al.Energy efficiency of different electrohydraulic drives[C]∥Proceedings of the 9th International Fluid Power Conference,2014:14-25.
3 何智,刘庆庭,区颖刚.甘蔗收获机双向变量柱塞泵动态响应特性仿真[J].农业机械学报,2012,43(10):329-336.HE Zhi,LIU Qingting,OU Yinggang.Dynamic response characteristic simulation of double-action variable displacement plunger pump for sugarcane harvester[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(10):329-336.(in Chinese)
4 张德胜,王海宇,施卫东,等.轴流泵多工况压力脉动特性试验[J].农业机械学报,2014,45(11):139-146.ZHANG Desheng,WANG Haiyu,SHI Weidong,et al.Experimental investigation of pressure fluctuation with multiple flow rates in scaled axial flow pump[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(11):139-146.(in Chinese)
5 张红娟.变转速泵控差动缸及低能耗注塑机技术研究[D].太原:太原理工大学,2011.ZHANG Hongjuan.Study on differential cylinder system controlled with variable speed pump and technology of low-energy injection molding machine[D].Taiyuan:Taiyuan University of Technology,2011.(in Chinese)
6 石金艳,范芳洪,周会,等.负流量控制机构伺服阀参数对变量泵的动态特性影响研究[J].机床与液压,2015,43(1):61-63.SHI Jinyan,FAN Fanghong,ZHOU Hui,et al.Study on effect of negative flow control mechanism servo valve parameters on the dynamical characteristics of variable-displacement pump[J].Machine Tool&Hydraulics,2015,43(1):61-63.(in Chinese)
7 KASSEM S A,BAHR M K.Effect of port plate silencing grooves on performance of swash plate axial piston pumps[C]∥7th Mechanical Design and Production Congress MDP7,2000:139-148.
8 KIM Jong Hyeok,JEON Chang Soo,HONG Yeh Sun.Constant pressure control of a swash plate type axial piston pump by varying both volumetric displacement and shaft speed[J].International Journal of Precision Engingeering and Manufacturing,2015,16(11):2395-2401.
9 KUMAR N,DASGUPTA K,GHOSHAL S K.Dynamic analysis of a closed-circuit hydrostatic summation drive using bent axis motors[J].Proc.IMech.E.,Part I:Journal of Systems and Control Engineering,2015,229(8):761-777.
10 KEMMETMULLER W,FUCHSHUMER F,KUGI A.Nonlinear pressure control of self-supplied variable displacement axial piston pumps[J].Control Engineering Practice,2010,18(3):84-93.
11 WANG L K,BOOK W J,HUGGINS J D.A hydraulic circuit for single rod cylinders[J].Journal of Dynamic Systems,Measurement and Control,2012,134(1):1-11.
12 吴文海.电液比例变量柱塞泵的动态仿真[D].成都:西南交通大学,2006.WU Wenhai.Dynamic simulation of electro-hydraulic proportional variable piston pump[D].Chengdu:Southwest Jiaotong University,2006.(in Chinese)
13 代平之.电磁卸荷恒压变量泵静动态特性实验及应用研究[D].北京:中国石油大学,2007.DAI Pingzhi.The static-dynamic characteristic experimental research and its application of the electromagnetic valve relieving constant pressure variable pump[D].Beijing:China University of Petroleum,2007.(in Chinese)
14 胡文静.恒压变量柱塞泵的特性仿真与试验[D].大连:大连理工大学,2013.HU Wenjing.Simulation and test on the characteristics of constant-pressure variable displacement axial piston pump[D].Dalian:Dalian University of Technology,2013.(in Chinese)
15 张德胜,耿琳琳,施卫东,等.轴流泵水力模型压力脉动和振动特性试验[J].农业机械学报,2015,46(6):66-72.ZHANG Desheng,GENG Linlin,SHI Weidong,et al.Experimental investigation on pressure fluctuation and vibration in axialflow pump model[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(6):66-72.(in Chinese)
16 HUANG J,YAN Z,QUAN L.Characteristics of delivery pressure in the axial piston pump with combination of variable displacement and variable speed[J].Proc.IMech.E.,Part I:Journal of Systems and Control Engineering,2015,229(7):599-613.
17 柯兵,卢岳良.高压泵压力脉动抑制技术研究[J].液压与气动,2013(10):90-95.KE Bing,LU Yueliang.Suppression technique of pressure pulsation for high-pressure pump[J].Chinese Hydraulics&Pneumatics,2013(10):90-95.(in Chinese)
18 任丹萍,张鑫彬,王斌.伺服机构恒压变量泵压力脉动分析[J].上海航天,2014,31(3):64-68.REN Danping,ZHANG Xinbin,WANG Bin.Analysis on pressure pulsation of constant-pressure variable pump in servo mechanism[J].Aerospace Shanghai,2014,31(3):64-68.(in Chinese)
19 杨阳,权龙,杨敬.轴向柱塞泵非止点配流窗口过渡区压力脉动特性分析[J].机械工程学报,2011,47(24):128-134.YANG Yang,QUAN Long,YANG Jing.Pressure pulsation characteristic analysis of the non-dead spots transition zone between flow distribution windows of axial piston pump[J].Journal of Mechanical Engineering,2011,47(24):128-134.(in Chinese)
20 秦彦凯.电液比例变排量轴向柱塞泵控制特性研究[D].太原:太原理工大学,2012.QIN Yankai.Research on the control characteristics of electro-hydraulic proportional variable displacement axial piston pump[D].Taiyuan:Taiyuan University of Technology,2012.(in Chinese)