快速锁紧阀的设计及性能研究
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摘要
随着计算机技术在流体控制系统中的大量应用,流体控制元件的数字化成为一种必然趋势。在液压锁紧系统中,锁紧阀作为控制元件,在整个系统中扮演着至关重要的角色。在一些要求快速响应、无泄漏及高控制精度的液压锁紧控制回路中,传统的锁紧阀很难达到技术要求。本文在综合国内外电液数字控制技术及元件的相关研究成果的基础上,设计了一种新型的快速锁紧阀。其整体采用二级结构,先导阀为直动式数字伺服阀,主阀采用锥阀结构,并且在主阀的设计中设置了挤压油膜阻尼器。
本文对快速锁紧阀进行数学建模,并根据理论模型对系统进行了仿真研究,最后对该系统进行了实验研究。实验研究表明,新设计的快速锁紧有许多优点:响应速度非常快,关闭时间仅为8(ms);泄漏量小,油膜的缓沖效果非常明显;稳定性高,锁紧阀在5000次的开关过程中未出现任何故障。本论文各章内容简述如下:
第一章,首先对本论文研究主题有关的文献进行了综述,接着阐述了本论文的研究目的、意义以及创新点,并列出了主要的工作量。
第二章,本章介绍了快速锁紧阀的结构原理,还包括先导阀的结构原理和特性分析。
第三章,本章建立了快速锁紧阀的理论模型,并且通过MATLAB软件对系统进行了仿真研究。
第四章,本章进行了缓冲油膜和主阀接触应力的仿真分析。
第五章,建立了快速锁紧阀的实验系统,对其进行了实验研究。
第六章,对论文的研究内容进行了总结与展望。
With more and more computer technology applied in hydraulic control field, there is a trend that hydraulic control technology and component should be digital. In the hydraulic control system, the locking valve, which acts control component, has a substantial influence on the performance of the system. In some hydraulic lock loop, he traditional locking valve difficult to achieve the requirements of rapid response, no leakage and high-precision control. In his thesis, a new high speed locking valve is designed, which based on the research of electro-hydraulic control technology and components. It's composed of two parts, the pilot valve is a direct-actuated digital servo valve and the main valve is a poppet valve. Furthermore, a squeeze film damper is designed in the main valve.
In this thesis, the mathematical model of the high speed locking valve is established, and the system is analyzed in simulation investigation. Furthermore, hardware and software of the system are also designed. Finally, the experiments are carried out, which indicates that the locking valve has many characteristics: fast response, response time is only 8(ms); less leakage, the effect of the oil film is very obviously; high stability, in the process of 5000 switch the locking valve without any fault. The main tasks of this paper are as follows.
Chapter 1 makes a summary of some relevant information about the history and trend of this research, and then introduces the purpose, meaning and creative point of this thesis.
Chapter 2 introduces the design of the high speed locking valve, introduces the design and characteristic analysis of the pilot valve.
Chapter 3 establishes the mathematical model of the system, which is also analyzed in simulation investigation.
Chapter 4 introduces the analysis on squeeze film and contact stress of the main valve.
Chapter 5 is about the experiments of the high speed locking valve.
Chapter 6 is the summarization of this thesis and prospect.
本文对快速锁紧阀进行数学建模,并根据理论模型对系统进行了仿真研究,最后对该系统进行了实验研究。实验研究表明,新设计的快速锁紧有许多优点:响应速度非常快,关闭时间仅为8(ms);泄漏量小,油膜的缓沖效果非常明显;稳定性高,锁紧阀在5000次的开关过程中未出现任何故障。本论文各章内容简述如下:
第一章,首先对本论文研究主题有关的文献进行了综述,接着阐述了本论文的研究目的、意义以及创新点,并列出了主要的工作量。
第二章,本章介绍了快速锁紧阀的结构原理,还包括先导阀的结构原理和特性分析。
第三章,本章建立了快速锁紧阀的理论模型,并且通过MATLAB软件对系统进行了仿真研究。
第四章,本章进行了缓冲油膜和主阀接触应力的仿真分析。
第五章,建立了快速锁紧阀的实验系统,对其进行了实验研究。
第六章,对论文的研究内容进行了总结与展望。
With more and more computer technology applied in hydraulic control field, there is a trend that hydraulic control technology and component should be digital. In the hydraulic control system, the locking valve, which acts control component, has a substantial influence on the performance of the system. In some hydraulic lock loop, he traditional locking valve difficult to achieve the requirements of rapid response, no leakage and high-precision control. In his thesis, a new high speed locking valve is designed, which based on the research of electro-hydraulic control technology and components. It's composed of two parts, the pilot valve is a direct-actuated digital servo valve and the main valve is a poppet valve. Furthermore, a squeeze film damper is designed in the main valve.
In this thesis, the mathematical model of the high speed locking valve is established, and the system is analyzed in simulation investigation. Furthermore, hardware and software of the system are also designed. Finally, the experiments are carried out, which indicates that the locking valve has many characteristics: fast response, response time is only 8(ms); less leakage, the effect of the oil film is very obviously; high stability, in the process of 5000 switch the locking valve without any fault. The main tasks of this paper are as follows.
Chapter 1 makes a summary of some relevant information about the history and trend of this research, and then introduces the purpose, meaning and creative point of this thesis.
Chapter 2 introduces the design of the high speed locking valve, introduces the design and characteristic analysis of the pilot valve.
Chapter 3 establishes the mathematical model of the system, which is also analyzed in simulation investigation.
Chapter 4 introduces the analysis on squeeze film and contact stress of the main valve.
Chapter 5 is about the experiments of the high speed locking valve.
Chapter 6 is the summarization of this thesis and prospect.
引文
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[42]臧怀泉,黄镇海,尹汝泼,方一呜,裴福俊.液压伺服系统建模的新方法.计算机仿真,2002
[43]Ruan J,Burton R.Bulk Modulus of Air Content Oil in a Hydraulic Cylinder.2005[44]邓春晓,潘地林.液压锥阀的有限元分析及优化设计[J].煤矿机械,2004,(6):1-3
[45]方本孝,杨信平.阀门密封性能的研究[J].阀门,1999,(2):12-16.
[46]周鑫,庞贺伟,闫少光,等.球头一锥面连接结非线性接触分析[J].航天器环境工程,2005,22(4):211-214.
[47]王均,刘全昆,徐荣珍.扁挤压筒接触应力和变形的分析[J].机床与液压,2003,(2):16-18.
[48]楼小玲,鲍雨梅,柴国钟,等.基于Hertz接触理论的涂层界面应力分析[J].浙江工业大学学报,2006,34(5):563-566.
[49]董晓倩,符永法.一种基于比例阀的气动位置控制系统探讨.广东农工商职业技术学院院报,2005
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[58]Ruan J,Ukrainetz p.2000,"Frequency Domain Modeling and Identification of 2D Digital S ervo Valve",International Journal of Fluid Power,1,pp.49-58
[59]Ruan J,Burton R.1999,A New Approach of Direct Digital Control for Spool Valves,ASME,Nashville,Tennessee FPST-Vol.6,pp.115-124.
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[2]路甬祥.电液比例控制技术[M].北京:机械工业出版社,1988,1-26
[3]黄人豪,濮凤根.液压控制技术回顾与发展.北京:液压气动与密封,2002
[4]杨尔庄.现代传动技术展望.2003年国际流体传动技术及市场发展研讨会论文汇编
[5]王占林.近代液压控制[M].北京,机械工业出版社,1997:3-17
[6]董秀林,周福章,史维祥.流体控制技术的发展与展望[J].洛阳工学院学报,1997,18(3):22-25
[7]李运华.近代液压伺服系统控制策略的现状与发展[J].液压与气动,1995,10(3):12-14
[8]史维祥.流体控制发展的一些方向[J].液压气动与密封,2001(1):10-12
[9]黄人豪,濮凤根.液压控制元件产品结构创新与发展趋势.流体传动与控制,2005
[10]阮健.新型流体控制元件及气动柔性执行元件的开发研究.博士学位论文.哈尔滨:哈尔滨工业大学,1995
[11]Ruan Jian,Burton R.A New Approach of Direct Digital Control for Spool Valves[J].ASME,The Fluid Power and Systems Technology,1999,FPST,Vol.6:115-124
[12]阮健,李胜,杨继隆.电液(气)直接数字控制的新方法[J].浙江工业大学学报,1999,27(3):207-213
[13]阮健,李胜,杨继隆.液压及气动阀直接数字控制的新途径.中国机械工程,2000,11(3):317-320
[14]Merritt H E.Hydraulic Control Systems[M].John Wiley & Sons,1967
[15]Noritsugu T.PWM Mode Electro-pneumatic Servo System for Position Control,Trans.Soc.Instrum &ControlEng,1984,20:754-764
[16]王宏达、关淑琴等.往复泵“液垫”锥阀运动分析及数值解析.管道技术与设备,1996(5):32-35
[17]Ruan J,Xu YM,Yu C Y.Technique of Pressure Regulation with a Capillary Dampertube[M].Proceedings of Intermational Conference on Fluid Power Control and Robotics,1990:324-329
[18]TakashiK.Stepper Motors and their Microprocessor Control[M].Oxford.Clareudon Press,1986
[19]夏胜枝、欧阳明高、周明、郝守纲.高速强力电磁阀挤压油膜阻尼的研究.机械工程学报,2003(7):84-88
[20]李胜,俞浙青,阮健.2D气动数字伺服阀.机床与液压,总第181期,2003
[21]李胜,朱小平,阮健,裴翔.2D数字压力阀.浙江工业大学学报,第3l卷,第3期,2003
[22]Li S,Ruan J,Burton R,Ukrainetz P,Bitner D."2D Digital Simplified Flow Valve".Proceedings[23]of the Fourth International Symposium on Fluid Power Transmission and Control(ISFP'2003)
[23]Pei X,Zheng J J,Yang J L,Ruan J,Burton R Ukrainetz P."2D Pneumatic Digital Servo Valve".Proceedings of the Fifth International Conference on Fluid Power Transmission and Control(ICFP'2001)
[24]骆涵秀,李世伦,朱捷,陈大军.机电控制.杭州:浙江大学出版社,2000:103-109,163-168
[25]夏胜枝等.电控单体泵电磁阀内阻尼油膜的挤压流动分析.清华大学学报(自然科学版),2003,43(5):693-697
[26]赵文峰.MATLAB控制系统设计与仿真.西安电子科技大学出版社,2003
[27]沈辉.精通SIMULINK系统仿真与控制.北京:北京大学出版社,2003
[28]张明.MATLAB基础与应用简明教程.北京:北京航空航天大学出版社,2001
[29]彭熙伟,陈建萍,李金仓.单向阀的特性及应用.液压与气动,2004(1)60-61.
[30]薛定宇,陈阳泉.基于MATLAB/Simulink的系统仿真技术与应用.北京:清华大学出版社,2004.4:406-422
[31]阮健,李胜,杨继隆.电液(气)直接数字控制的新方法.杭州:浙江工业大学学报,1999.9
[32]Ruan J,Burton R.A New Approach of Direct Digital Control for Spool Valves,1999,ASME,Nashville,Tennessee FPST-Vol.6:115-124.
[33]章宏甲,黄谊.液压传动.机械工业出版社,2000.9:109-112
[34]卢长耿,李金良.液压控制系统的分析与设计.煤炭工业出版社,1991.2:81-84.
[35]王洪杰,季天晶,毛新涛,刘全忠.直驱式液压位置控制系统的建模与仿真分析.机床与液压,2005
[36]蒋志明,韩崇伟.电液位置伺服系统的模糊CMAC神经网络控制研究.机床与液压,2000
[37]李友善.自动控制原理.北京:国防工业出版社,1980
[38]李永堂,雷步芳.液压系统建模与仿真.北京:冶金工业出版社,2003
[39]李新平,霍族亮,于仁萍,史庆国,葛云燕.基于Matlab/Simulink的液压缸建模与仿真.煤矿机械,2005
[40]王传礼,许贤良.阀控非对称缸液压机构建模探讨.矿山机械,1998
[41]张威,李凤玲.试述挤压油膜阻尼器发展及应用.有色矿冶,2002,18(6):46-48
[42]臧怀泉,黄镇海,尹汝泼,方一呜,裴福俊.液压伺服系统建模的新方法.计算机仿真,2002
[43]Ruan J,Burton R.Bulk Modulus of Air Content Oil in a Hydraulic Cylinder.2005[44]邓春晓,潘地林.液压锥阀的有限元分析及优化设计[J].煤矿机械,2004,(6):1-3
[45]方本孝,杨信平.阀门密封性能的研究[J].阀门,1999,(2):12-16.
[46]周鑫,庞贺伟,闫少光,等.球头一锥面连接结非线性接触分析[J].航天器环境工程,2005,22(4):211-214.
[47]王均,刘全昆,徐荣珍.扁挤压筒接触应力和变形的分析[J].机床与液压,2003,(2):16-18.
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