【作者】 牛忠良；

【导师】 孙立镌；

【作者基本信息】 哈尔滨理工大学 ， 计算机软件及理论， 2005， 硕士

【摘要】 在仪器仪表计算机辅助设计系统中,许多并行系统仍然主要基于文本和二维图形,信息交流中产生误解,不能动态交互地改变运动参数,因此存在较大的局限性。论文是基于Web 和VR 的并行系统可克服上述弊端,大大提高了并行和分布工程中信息交流的质量。论文首先分析总结了目前关于并行设计和虚拟现实的研究成果,在分析并行设计面临问题的基础上,提出了新的解决方案。通过集成JAVA3D,JAVA 等开放的标准和技术,研究及实现了基于WEB 和虚拟现实的并行设计系统。为了使自主开发的HUST-CAID(Harbin University of Science and Technology-Computer Aided Industry Design)系统能够进行并行设计功能,对HUST-CAID 系统进行分析,给出了一个接口,可以比较容易的把HUST-CAID 系统的数据格式转化为JAVA3D 的数据格式。为虚拟现实下的并行设计打下了很好的基础。论文提出了一种并行设计的新解决方案,以WEB 作为统一的客户端界面,并且开发一个服务器端来处理客户端发送的信息。在并行图形显示方面,系统提出的是基于XML 来表达模型信息的新方法,并且采用渐进式的显示技术。这种显示方法是基于单分辨率网格的,与多分辨率网格相比更加灵活,不需要进行烦琐的预处理,可以根据用户关注细节的不同来自定义各自的显示模型。此种框架在自主开发的电工仪器仪表辅助造型设计系统HUST-CAID 中逐步实践,取得一定的成绩。满足了HUST-CAID 系统向网络方面扩展的要求。更多还原

【Abstract】 In the instrument and apparatus computer aided designing system, some collaborative systems still mainly based on the text and two-dimensional figure, misunderstand was happen in information interchange and can’t change the sport parameter alternately, so there is greater limitation. The thesis named collaborative system based on VR and Web can overcome above-mentioned drawbacks, the quality of information interchange in the collaborative and distributed project has been improved greatly. The thesis analyzes at present about collaborative designing and virtual reality research results at first, on the basis of analyzing problem in collaborative design, the new solution is put forward. Through integrated JAVA3D with open standard and technology, such as JAVA, etc., collaborative design system based on WEB and virtual reality is researched and realized. In order to enable independently HUST-CAID (Harbin University of Science and Technology-Computer Aided Industry Design) System to support collaboration design, Analyzing to HUST-CAID system, provides an interface. Through interface that this thesis provides, we can easy to turn HUST-CAID system data structure into the data structure of JAVA3D. This interface offered very good foundation for collaborative designing under virtual reality. The thesis puts forward a new solution to collaborative design; regard WEB as a unified customer terminal; develop one server terminal which deal with message that customer sends. In the graphical collaborative display, what this system puts forward is a kind of new method expressing the information of models on the basis of XML, and adopts a kind of progressive display technology. Single resolution ratio net used in progressive display is more flexible compare with many resolution ratio nets. This solution don’t need fussy pretreatment, can defining own display models based on the detail to which different users pay close attention. The framework obtains achievement through practice step by step in electrician instrument and apparatus system HUST-CAID that develops independently. HUST-CAID system is satisfied with extending to the network respect.更多还原