基于虚拟仪器的电液伺服阀试验台设计及静动态特性分析
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摘要
根据企业委托,为对老化、失效的液压元件进行检测、维修,参考国际、国内优秀的试验台设计理论,依据企业自身需要,研制了伺服阀试验台。该试验台基于液压测试中心,其动力供给和测试系统由测试中心提供,该中心测试平台可对液压元件像液压泵、液压马达、液压缸、常规阀、伺服阀进行一般的出厂试验。
论文阐述了伺服阀试验台的一般设计流程,包括电液伺服阀试验台液压站的设计、电液伺服阀试验台原理图的拟定、电液伺服阀试验台电气系统的设计。介绍了远程调压技术在试验台应用的重要性。
论文介绍了电液伺服阀的原理并分析了电液伺服阀的静、动态特性。详细分析了动态测试系统两种测试方案古典频域法和统计法的测试原理,最终通过比较、分析,得出利用统计法测试电液伺服阀动态特性的优越性。
通过分析电液伺服阀试验台的动态测试系统,建立了动态测试系统的数学模型。分析得出了影响动态测试系统精度的因素即伺服缸的固有频率对动态测试系统的影响,并提出了提高伺服缸固有频率的措施。
论文最后分析了电液伺服阀试验台的测控系统。介绍了试验台的硬件结构,利用LabVIEW编写了测控系统的程序。还分析了测试系统的抗干扰措施。
电液伺服阀试验台的设计及静动态特性分析为维修伺服阀提供了理论依据,提高了企业对电液伺服阀的故障诊断能力。
According to enterprise commissioned, in order to test and maintenance the aging or failure hydraulic components,reference the best test-bed design theory of International and domestic, based on the needs of the enterprise,have developed servo valve test-bed. Based on the test-bed hydraulic testing centers, and its power supply and test system provided by the testing center, the center test platformer can test hydraulic components like hydraulic pumps, hydraulic motors, hydraulic cylinders, conventional valves, servo valves for general factory test.
The article described the servo valve test-bed of the general design flow, including the design of the electro-hydraulic servo valve station、study out the schematic diagram of the electro-hydraulic servo valve test-bed、the design of the electro-hydraulic servo valve test-bed electrical system. Introduced the importance of the using of remote voltage regulator technology on test-bed.
The article described the principle of electro-hydraulic servo valve and also analyze the static and dynamic characteristics of electro-hydraulic servo valve. Detailed analyzed the two test programs of dynamic test system, such as the text principle of frequency method and statistical methods, finally by comparison, analysis, educe the superiority of using statistical methods to text dynamic characteristics of electro-hydraulic servo valve.
By analyzing the dynamic text system of electro-hydraulic servo valve test-bed, established dynamic mathematical model of test system, analysis of the impact of dynamic factors in the accuracy of the test system that is the natural frequency of servo-cylinder test systems for dynamic impact, and proposed to raise the natural frequency of servo-cylinder measures.
Finally the article analyzed the measurement and control system of the electro-hydraulic servo valve test-bed, introduced the test-bed hardware structure, prepared using LabVIEW process measurement and control system. Also analyzed the anti-jamming measures to test system.
Design and analysis of static and dynamic characteristics of the electro-hydraulic servo valve test-bed provides a theoretical basis for servo valve repairs, improved the business to electro-hydraulic servo valve fault diagnosis ability.
论文阐述了伺服阀试验台的一般设计流程,包括电液伺服阀试验台液压站的设计、电液伺服阀试验台原理图的拟定、电液伺服阀试验台电气系统的设计。介绍了远程调压技术在试验台应用的重要性。
论文介绍了电液伺服阀的原理并分析了电液伺服阀的静、动态特性。详细分析了动态测试系统两种测试方案古典频域法和统计法的测试原理,最终通过比较、分析,得出利用统计法测试电液伺服阀动态特性的优越性。
通过分析电液伺服阀试验台的动态测试系统,建立了动态测试系统的数学模型。分析得出了影响动态测试系统精度的因素即伺服缸的固有频率对动态测试系统的影响,并提出了提高伺服缸固有频率的措施。
论文最后分析了电液伺服阀试验台的测控系统。介绍了试验台的硬件结构,利用LabVIEW编写了测控系统的程序。还分析了测试系统的抗干扰措施。
电液伺服阀试验台的设计及静动态特性分析为维修伺服阀提供了理论依据,提高了企业对电液伺服阀的故障诊断能力。
According to enterprise commissioned, in order to test and maintenance the aging or failure hydraulic components,reference the best test-bed design theory of International and domestic, based on the needs of the enterprise,have developed servo valve test-bed. Based on the test-bed hydraulic testing centers, and its power supply and test system provided by the testing center, the center test platformer can test hydraulic components like hydraulic pumps, hydraulic motors, hydraulic cylinders, conventional valves, servo valves for general factory test.
The article described the servo valve test-bed of the general design flow, including the design of the electro-hydraulic servo valve station、study out the schematic diagram of the electro-hydraulic servo valve test-bed、the design of the electro-hydraulic servo valve test-bed electrical system. Introduced the importance of the using of remote voltage regulator technology on test-bed.
The article described the principle of electro-hydraulic servo valve and also analyze the static and dynamic characteristics of electro-hydraulic servo valve. Detailed analyzed the two test programs of dynamic test system, such as the text principle of frequency method and statistical methods, finally by comparison, analysis, educe the superiority of using statistical methods to text dynamic characteristics of electro-hydraulic servo valve.
By analyzing the dynamic text system of electro-hydraulic servo valve test-bed, established dynamic mathematical model of test system, analysis of the impact of dynamic factors in the accuracy of the test system that is the natural frequency of servo-cylinder test systems for dynamic impact, and proposed to raise the natural frequency of servo-cylinder measures.
Finally the article analyzed the measurement and control system of the electro-hydraulic servo valve test-bed, introduced the test-bed hardware structure, prepared using LabVIEW process measurement and control system. Also analyzed the anti-jamming measures to test system.
Design and analysis of static and dynamic characteristics of the electro-hydraulic servo valve test-bed provides a theoretical basis for servo valve repairs, improved the business to electro-hydraulic servo valve fault diagnosis ability.
引文
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28许益民.电液伺服阀动态相频特性CAT数据处理误差分析.机械工程学报,2005,41(1):46-49
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40赵江波,王军政,汪首坤.伺服阀静、动态性能测试中多功能信号发生器的设计与应用.液压与气动,2003(6):37-39
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60谭尹耕.液压实验设备与测试技术.北京:北京理工大学出版社,1997:130-140
2陈彬,易孟林.电液伺服阀的研究现状和发展趋势.液压与气动,2005(6):5-6
3熊诗坡.液压测试技术.北京:机械工业出版社,1992:56-60
4李健锋,袁锐波,张自华.电液伺服阀测试系统研究.液压与气动,2007(12):65-67
5严继东,张凤.多功能综合液压试验台的研制与开发.流体传动与控制. 2005,(4) 21-23
6黄晓东,聂继方. The CAT System for the Feature of Elect-hydraulic Servo Valve.机床与液压,2003 (5):55~57
7赵静一,马玉良,姚成玉.基于虚拟仪器的交流液压综合实验台设计.流体传动及控制,2006(4):32-34
8吕景忠,刘顺安.具有截止功能的远程调压阀简介.液压气动与密封,1992 (4):25-31
9安桂红,张春林.利用溢流阀远程调压精确调节动力转向泵安全阀压力.机械管理开发,2003 (4):56-59
10椭圆齿轮流量计LC系列说明书.合肥仪表总厂. 1999
11吴正毅.测试技术与测试信号处理.北京:清华大学出版社,1991:134-137,186-234
12邬宽明. CAN总线原理和应用系统设计.北京:北京航空航天大学出版社,1996.
13刘建,王益群.电液伺服阀静动态特性及其远程测控系统研究.机床与液压,2006(8):77-80
14黄宴委,吴惕华,赵静一. Sensitivity analysis for rolling process based on support vector machine. Chinese Journal of Mechanical Engineering(机械工程学报英文版),2005,18(2):271-274
15 Francisco Rovira-Más,Qin Zhang,Alan C. Hansen. Dynamic behavior of an electrohydraulic valve. Typology of characteristic curves Mechatronics,2007,(17):551-561
16宋德玉,吴炳胜,赵静一.新型电液比例精密流量阀的控制特性研究.液压气动与密封,2001(5):26-27
17刘建.电液伺服阀静动态综合特性计算机辅助测试系统的研发. [燕山大学工学硕士学位论文].2004:14-20
18 F. Mazenc,E. Richard. Stabilization of hydraulic systems using a passi vity proper ty. Systems & Control Letters,2001,10(44): 111-117
19 Cautero G., Paolucci G., Brena B., Agostino R.G., Tommasini R., Comelli G., Rosei R. LabVIEW-based control system for a surface science experimental station. Measurement Science & Technology,1994,5(8): 1002-1011
20李久彤,赵静一.电液伺服系统的动压反馈网络校正方法研究.钢铁,1999,34(7):58-61
21郑寅,吴显庭.基于LabVIEW的液压伺服阀检测系统.应用能源技术,2007(7):40-43
22汪首坤,王军政,赵江波.电液伺服阀静动态特性测试系统的研制.液压与气动2003(2):18-20
23陈新元,曾良才,陈奎.伺服阀静态特性测试与状态模式识别智能系统研究.液压气动与密封,2004(2):20-23
24章宏甲,黄谊.液压传动.机械工业出版社, 1998:126-135
25 Han Huilian, Fan Qifeng, Zhang Lun, Wang Gao. Design of software platform for virtual instrument. Proceedings of the International Symposium on Test and Measurement,1999:277-280
26 Wang J.Y.一Z.LabVIEW in engineering laboratory courses [J] .33rd Annual Frontiers in Education,2003,2 (13):102.
27许益民.电液伺服阀频率特性测试系统误差分析.武汉科技大学学报,2005,28(4):346-348
28许益民.电液伺服阀动态相频特性CAT数据处理误差分析.机械工程学报,2005,41(1):46-49
29姚晓先,林凡,莫波.伺服机构计算机辅助测试系统.测控技术,1999, 8(7):43-44
30雷天觉,杨尔庄,李寿刚.新编液压工程手册.北京:北京理工大学出版社,1999:2174-2179
31 Pormnieer V.,Sabatier J.,hurricha A.G.,et a1.A Nyquist riterion for time varying periodic systems,with applic.ation to a hydraulic test bench[c].Proceedings of the 2002 IEEE International Conference on Control Applications,2002,2(2):1094—1097
32陈平,裘丽华.液压伺服系统测试的谱分析法研究.机床与液压,2002(1):141-142
33王向周,王渝.电液伺服阀动态性能测试的谱分析法研究.北京理工大学学报, 1997,17(13):301-305
34李新平,霍族亮,于仁萍.基于Matlab/Simulink的液压缸建模与仿真.煤矿机械,2005(7):49-51
35徐鑫.双喷嘴挡板电液伺服阀建模与仿真研究.机械设计与制造. 2008(4):59-62
36江桂云,王勇勤,严兴春.液压伺服阀控缸动态特性数学建模及仿真分析.四川大学学报,2008,40(5):195-197
37陈奎生.高精度电液伺服阀动态、静态特性测试系统.武汉冶金科技大学报,1997,(2):37-38
38程俊静.基于LabVIEW的远程虚拟实验系统.计算机与现代化,2006, (4):12-14
39王燕山,王益群,姜万录.虚拟仪器技术在液压CAT中的应用[C].第一届全国流体动力及控制工程学术会议论文集.秦皇岛,2000(8):42-45
40赵江波,王军政,汪首坤.伺服阀静、动态性能测试中多功能信号发生器的设计与应用.液压与气动,2003(6):37-39
41周永强,姚振和.虚拟仪器数据采集系统的研制.长江科学院院报,1999, 16(2):43-46
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