基于VRML的电液伺服调节器三维可视化研究
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摘要
VRML是一种完全虚拟现实的三维空间描述语言,具有对模型和场景进行实时渲染与实时交互的功能,从而能够制造出效果逼真的造型和场景,使浏览者具有身临其境的感觉。本文结合舵机电液伺服调节器新产品开发课题,以舵机电液伺服调节器为原型,利用VRML虚拟现实技术,开展了机械结构装配关系三维可视化造型的研究。
论文通过分析比较,确定了电液伺服调节器三维可视化的方法和实现手段。选择3DS MAX、Pro/E软件和JavaScript语言以及VRML相结合的方式,并通过它们之间良好的兼容接口,建立了调节器在VRML场景下的三维模型。然后分析了电液伺服调节器各零部件之间的运动关系,并根据这种相互关系,确定了其虚拟装配、拆卸和虚拟场景交互式动画的路径,以及在VRML环境下各造型节点和传感器节点以及插值器节点间事件传递和路由的关联。最后还利用JavaScript脚本和VRML之间完全匹配的内嵌通道,并以JavaScript脚本来控制和协调各事件路由的连接和中转,很好地实现了虚拟场景中所出现的各种交互动作,为电液伺服调节器虚拟场景增加了控制过程的动画效果。
本文研究了实现低成本桌面式虚拟现实系统的方法。通过体验本课题制作的虚拟系统,使用者能快速熟悉和掌握电液伺服调节器的内部结构及各部件之间的空间位置和运动关系,直观形象,克服了平面投影视图要依赖空间想象力建立立体图形的困难。研究成果对机械产品设计及操作、维护人员熟悉结构、原理具有辅助作用和实用价值。
VRML is a totally virtual reality language for describing three-dimensional space.It has the function of timely rendering the model and the scene and also include the interactive operating,which can provide rich and colorful effect of modeling and scene,and the browser can have the feeling of being personally on the scene.In order to overcome the drawback of Planar projection view,which only relies on the establishment of three-dimensional space,and has the Poor graphics visualization.Based on the issues of developing new product of electro-hydraulic servo steering regulator,and With electro-hydraulic servo steering regulator for the prototype,using VRML virtual reality technology,this paper mainly research on the mechanical structure of 3D visualization technology.
By analyzing and comparing,The study establishes the 3D visualization of specific methods and means of the electro-hydraulic servo regulator.combining of the 3DS MAX,Pro/E software and JavaScript language,and through the compatible interface,regulator in VRML 3D model of precision is established.According to analysis and calculation movement and moving relations of key parts and components of regulator,the action relationships between parts is identified.And it laid the theoretical foundation for simulating the real test environment and achieving regulator virtual reality system.Using the mutual acting relationships between parts of regulator,its virtual assembly,demolition and virtual scene interactive animation path is confirmed.Also the Association between nodes of sensor and interpolation for transmission and routing under VRML environment is established.Using the embedded access between the Java script scripts and the VRML which is perfectly matched,under the control and correspond of routing and transferring the links of Java script scripts,all interactive action appeared in virtual scene is come true.And it makes a powerful animation effects for the electro-hydraulic servo regulator virtual scene.
This paper seeks to find a way to achieve a low cost desktop virtual reality system.Through the experience of virtual system produced in this paper,we can become familiar with and master the internal structure of electro-hydraulic servo regulator and its special place and movement relations,which can provide a practical value for the person who are familiar with the electro-hydraulic servo steering regulator design,operation and maintenance.
论文通过分析比较,确定了电液伺服调节器三维可视化的方法和实现手段。选择3DS MAX、Pro/E软件和JavaScript语言以及VRML相结合的方式,并通过它们之间良好的兼容接口,建立了调节器在VRML场景下的三维模型。然后分析了电液伺服调节器各零部件之间的运动关系,并根据这种相互关系,确定了其虚拟装配、拆卸和虚拟场景交互式动画的路径,以及在VRML环境下各造型节点和传感器节点以及插值器节点间事件传递和路由的关联。最后还利用JavaScript脚本和VRML之间完全匹配的内嵌通道,并以JavaScript脚本来控制和协调各事件路由的连接和中转,很好地实现了虚拟场景中所出现的各种交互动作,为电液伺服调节器虚拟场景增加了控制过程的动画效果。
本文研究了实现低成本桌面式虚拟现实系统的方法。通过体验本课题制作的虚拟系统,使用者能快速熟悉和掌握电液伺服调节器的内部结构及各部件之间的空间位置和运动关系,直观形象,克服了平面投影视图要依赖空间想象力建立立体图形的困难。研究成果对机械产品设计及操作、维护人员熟悉结构、原理具有辅助作用和实用价值。
VRML is a totally virtual reality language for describing three-dimensional space.It has the function of timely rendering the model and the scene and also include the interactive operating,which can provide rich and colorful effect of modeling and scene,and the browser can have the feeling of being personally on the scene.In order to overcome the drawback of Planar projection view,which only relies on the establishment of three-dimensional space,and has the Poor graphics visualization.Based on the issues of developing new product of electro-hydraulic servo steering regulator,and With electro-hydraulic servo steering regulator for the prototype,using VRML virtual reality technology,this paper mainly research on the mechanical structure of 3D visualization technology.
By analyzing and comparing,The study establishes the 3D visualization of specific methods and means of the electro-hydraulic servo regulator.combining of the 3DS MAX,Pro/E software and JavaScript language,and through the compatible interface,regulator in VRML 3D model of precision is established.According to analysis and calculation movement and moving relations of key parts and components of regulator,the action relationships between parts is identified.And it laid the theoretical foundation for simulating the real test environment and achieving regulator virtual reality system.Using the mutual acting relationships between parts of regulator,its virtual assembly,demolition and virtual scene interactive animation path is confirmed.Also the Association between nodes of sensor and interpolation for transmission and routing under VRML environment is established.Using the embedded access between the Java script scripts and the VRML which is perfectly matched,under the control and correspond of routing and transferring the links of Java script scripts,all interactive action appeared in virtual scene is come true.And it makes a powerful animation effects for the electro-hydraulic servo regulator virtual scene.
This paper seeks to find a way to achieve a low cost desktop virtual reality system.Through the experience of virtual system produced in this paper,we can become familiar with and master the internal structure of electro-hydraulic servo regulator and its special place and movement relations,which can provide a practical value for the person who are familiar with the electro-hydraulic servo steering regulator design,operation and maintenance.
引文
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[22] The Virtual Reality Modeling Language AnnexB-Java platform scripting reference. http://www.vrml.org/Specifications/VRML97/partl/java.html .
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[27] Cortona VRML Client,http://www.parallelgraphics.com/products/cortona.
[28] Proposal for a VRML 2.0 Informative Annex-External Authoring Interface Reference. http://www.matrin.com/vrml .
[29]黄铁军,柳健编译.VRML国际标准与应用指南[M].北京:电子工业出版社.1999.
[30] [美]Andrea L.Ames David R.Nadeau John L.Moreland著,宗志方,季晖,谭江天等译.VRML资源手册[M].北京:电子工业出版社,1998.
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[34] Dongil Shin,En Sup Yoon,Sang Jin Park, and Euy Soo Lee.Web-based interactive virtual laboratory system for unit operations and process systems engineering education,Computers and Chemical Engineering,2000(24):1381~1385.
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[36]黄铁军.VRML是什么? VRML97:跨越因特网的虚拟现实[J].中国图象图形学报.
[37]吴小华主编,姜安德,周玲编著.构建个性化网络虚拟世界—VRML从入门到精通[M].北京:国防工业出版社,2002.
[38]张金钊,张金嫡,张金锐著.虚拟现实三维立体网络程序设计语言VRML—第二代网络程序设计语言[M].北京:清华大学出版社,北京交通大学出版社,2004.
[39]刘怡,张洪定,崔欣.虚拟现实VRML程序设计[M].天津:南开大学出版社,2007.
[40]段新昱.虚拟现实基础与VRML编程[M].北京:高等教育出版社,2004.
[41]黄文丽等编著.VRML语言入门与应用[M].北京:中国铁道出版社,2003.
[42]汪兴谦.VRML与Java编程实例讲解[M].中国水利出版社,北京.2002.
[43]陆昌辉,周下平等.使用VRVIL与JAVA创建网络虚拟环境[M].北京:北京人学出版社,2003.
[44]连振汉.蔡奇玉.刘克勤等.Java/VRML设计大全[M].北京:机械工业出版社.1997.
[45]孙济洲.VRML虚拟现实建模语言:在环球网上创建动态世界[M].天津:天津大学出版社,1998.
[46]赛博科技工作室.VRML与Java编程技术[M].北京:人民邮电出版社,2002.
[47]李竞杰,赵鹏.构建个性化网络虚拟世界: VRML与Java编程[M].北京:国防工业出版社,2002.
[48]阳化冰,刘忠丽,刘忠轩等著.虚拟现实构造语言VRML[M].北京:北京航空航天大学出版社,2000.
[49]傅最,彭群生一个桌面型虚拟建筑环境实时漫游系统的设计与实现[J].计算机学报,1998,9.
[50]汤晓燕,石忠.基于VRML技术的虚拟装配实验方法研究[J].实验室研究与探索,2004,(3):13~16.
[51]詹友刚编著.Pro/EN G IN EER中文野火版教程—通用模块[M].北京:清华大学出版社,2003 .
[52]朱响斌,唐敏等.一种基于八叉树的三维实体内部可视化技术[J].中国图形图像学报Vol.7.NO.3:229~233,2002.
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[2]黄铁军,柳健.VRML的特性与发展动向[J].计算机世界报.1998(48).
[3] R.Bowen loftin.Aerospace application of virtual environment technology.Computer Graphics,1996,30(4).
[4] Latta J N,Oberg D I.A conceptual virtual reality model.IEEE CG&A,January 1994
[5] G Sing h,Serra L.BrickNet: a software toolkit for network based virtual worlds.Presence,l994,3(1).
[6]胡小强.虚拟现实技术[M].北京:北京邮电大学出版社,2005.
[7]中蔚,夏立文编著.虚拟现实技术[M].北京:北京希望电子出版社,2002.
[8] Henrik Tramberend.Avocado: a distributed virtual reality framework.IEEE Virtual Reality'99 ,1999:14-21.
[9] Dave Snowdon,Chris Greenhalgh,Steve Benford,etal.A review of distributed architectures for networked virtual reality.Virtual Reality,1996,2(1):155~175 .
[10] Jerry Isdale.What is Virtual Reality.ftp://u.washinulun.edu.
[11] [美]Grigore C.Burdea,[法]Philippe Coiffet著.虚拟现实技术=Virtual reality technology[M].魏迎梅,栾悉道等译.北京:电子工业出版社,2005.
[12]唐泽圣,孙延奎等.科学计算可视化理论与应用研究进展[J].清华大学学报(自然科学版)Val.41 No.4/5,2001.
[13] [美]Joe Gradecki著.虚拟现实系统制作指南=The virtual reality construction kit.何定等译[M].北京:电子工业出版社,1996.
[14] [美]William R.Sherman,Alan B.Craig著.虚拟现实系统:接口、应用与设计= Understanding virtual reality:interface,application,and design .魏迎梅,杨冰等译.北京:电子工业出版社,2004.
[15] Y.B.LVO,S.K.ONG,D.F.CHEN and A.Y.C,NEE,An Internet-enabled image and modelbased Virtual machining System,International journal of Production Research,2002,Vo140,No.10:2269~2288.
[16] Earnshaw,R.A.Virtual reality system.London:Academic Pr,1993.
[17] Dhruv Khettry Xian-He Sun,A Windows-NT virtual collaboratory for technical computing,Advances in engineering software 31(2000): 717~722.
[18]张秀山.虚拟现实技术及编程技巧[M].长沙:国防科技大学出版社,1999.
[19]曾芬芳.虚拟现实技术[M].上海:交通大学出版社,1997.
[20]洪炳镕,蔡则苏,唐好选.虚拟现实及其应用[M].北京:国防工业出版社,2005.
[21]马登武,叶文,于凤全.虚拟现实技术及其在飞行仿真中的应用[M].北京:国防工业出版社,2005 .
[22] The Virtual Reality Modeling Language AnnexB-Java platform scripting reference. http://www.vrml.org/Specifications/VRML97/partl/java.html .
[23] Bell G,Carey R.The VRML 2.0 Specification.1996(http://vag.Vrml.org/vrml2.0).
[24]赵小林,张俊,刘剑青.网页制作技术教程:虚拟现实篇[M].北京:国防工业出版社,2002.
[25]刘祥.虚拟现实技术辅助建筑设计[M].北京:机械工业出版社,2004.
[26] [美] Joe Gradecki著.虚拟现实软件编程指南[M].王涌天等译.北京:电子工业出版社,1998 .
[27] Cortona VRML Client,http://www.parallelgraphics.com/products/cortona.
[28] Proposal for a VRML 2.0 Informative Annex-External Authoring Interface Reference. http://www.matrin.com/vrml .
[29]黄铁军,柳健编译.VRML国际标准与应用指南[M].北京:电子工业出版社.1999.
[30] [美]Andrea L.Ames David R.Nadeau John L.Moreland著,宗志方,季晖,谭江天等译.VRML资源手册[M].北京:电子工业出版社,1998.
[31] Cai Yong.Liu Xue- hui,Wu En- hua.A virtual reality system based on IBR.Journal of Software.1997.8(10): 721~728.
[32]顾翔,王汝传.Internet上的虚拟现实建模语言—VRML[J].电子工程师,1996( 6 ).
[33] Internation Organization for Standardization , The Virtual Reality Modeling Language ,April 1997.ISO/IEC DIS 14772-1,http: // www.vrml.org/ Specifications / VRML97/ DIS/.
[34] Dongil Shin,En Sup Yoon,Sang Jin Park, and Euy Soo Lee.Web-based interactive virtual laboratory system for unit operations and process systems engineering education,Computers and Chemical Engineering,2000(24):1381~1385.
[35]张旆,杜可亮,刘见灼等编著.WWW上的虚拟现实技术—VRML语言[M].北京:电子工业出版社,1998.
[36]黄铁军.VRML是什么? VRML97:跨越因特网的虚拟现实[J].中国图象图形学报.
[37]吴小华主编,姜安德,周玲编著.构建个性化网络虚拟世界—VRML从入门到精通[M].北京:国防工业出版社,2002.
[38]张金钊,张金嫡,张金锐著.虚拟现实三维立体网络程序设计语言VRML—第二代网络程序设计语言[M].北京:清华大学出版社,北京交通大学出版社,2004.
[39]刘怡,张洪定,崔欣.虚拟现实VRML程序设计[M].天津:南开大学出版社,2007.
[40]段新昱.虚拟现实基础与VRML编程[M].北京:高等教育出版社,2004.
[41]黄文丽等编著.VRML语言入门与应用[M].北京:中国铁道出版社,2003.
[42]汪兴谦.VRML与Java编程实例讲解[M].中国水利出版社,北京.2002.
[43]陆昌辉,周下平等.使用VRVIL与JAVA创建网络虚拟环境[M].北京:北京人学出版社,2003.
[44]连振汉.蔡奇玉.刘克勤等.Java/VRML设计大全[M].北京:机械工业出版社.1997.
[45]孙济洲.VRML虚拟现实建模语言:在环球网上创建动态世界[M].天津:天津大学出版社,1998.
[46]赛博科技工作室.VRML与Java编程技术[M].北京:人民邮电出版社,2002.
[47]李竞杰,赵鹏.构建个性化网络虚拟世界: VRML与Java编程[M].北京:国防工业出版社,2002.
[48]阳化冰,刘忠丽,刘忠轩等著.虚拟现实构造语言VRML[M].北京:北京航空航天大学出版社,2000.
[49]傅最,彭群生一个桌面型虚拟建筑环境实时漫游系统的设计与实现[J].计算机学报,1998,9.
[50]汤晓燕,石忠.基于VRML技术的虚拟装配实验方法研究[J].实验室研究与探索,2004,(3):13~16.
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