【作者】 梅嵩；

【导师】 孙立镌；

【作者基本信息】 哈尔滨理工大学 ， 计算机软件与理论， 2006， 硕士

【摘要】 随着市场竞争的日益加剧,为了缩短产品开发周期、降低开发费用,产品设计正由传统的串行式过程向并行、协同的过程发展。分布式协同设计(DCD)是20世纪90年代发展起来的产品设计思想,旨在组织多学科专家跨越地区和时间的障碍,实现复杂产品的协同开发。同时,Internet/Intranet的飞速发展(目前网络的可用带宽是M bps级,甚至达到G bps级)也为实现协同设计并广泛应用成为可能。虽然如此,由于协同设计是一个并行集成的优化过程,但目前协同设计中的造型系统多依赖设计历程,网络数据传输量大,实际运用效果并不是太理想。本课题在仔细研究目前多种造型系统的基础上,将基于细胞元表示的语义特征造型技术引入到协同设计中,在网络协同设计中实现这种建模。基于细胞元的语义特征造型系统是从几何模型元素这一层次上研究基于细胞元的特征模型表示方法,通过特征依赖图使其特征修改不依赖于历程树,从而避免了造型系统依赖设计历程的问题。同时本课题在对HUST-CAID(哈尔滨理工大学计算机辅助工业造型设计系统)系统研究的基础上,提出了为使该系统能运用于协同设计环境下的新的协同架构C-HUSTCAID,并从理论研究和系统设计两个方面对C-HUSTCAID架构进行了研究,该框架使用XML文件作为细胞元信息的载体,并进行数据绑定,采用RMI技术在网络中进行数据对象的操作,利用维护语义一致性来解决协同设计中的冲突问题。该框架克服了依赖历史进程树的造型系统,改善了协同设计中网络数据传输和安全性问题,更具实用性,更加满足用户的需求。更多还原

【Abstract】 With the market competition increasing, in order to shorten product development cycle and reduce the development costs, product design is changed form the traditional serial-type process to the parallel, collaborative development process. Distribute Collaborative Design (DCD) is the new product design idea which is begun at the 1990s in the 20th century, it is used to organize the multidisciplinary experts to realize the complex products’collaborative development which is needed to across the regions and time. At the same time, the rapid development of Internet/Intranet (Net bandwidth is now available M bps level, and even reached G bps level) provides the possibility of the application of the collaborative design. However, the collaborative design is a parallel integration’s process optimization, but now in the collaborative design the feature modeling depends on the designing history and data quantity is heavy, so the results of the practical application are not satisfactory.On the basis of analyzing some collaborative design frameworks, this paper introduces the Cellular Semantic Feature Modeling to the collaborative design, realizes this modeling in the network. The cellular semantic feature modeling researches the expressing methods of the feature modeling from the level of geometric model elements, lets its features’modification not depends on the design history tree through the Feature Depending Graph (FDG), thus it avoids the problem of depending on the design history in the modeling design system. This paper proposes a new collaborative design framework C-HUSTCAID on the basis of research of the HUST-CAID system, this framework uses XML to keep the model’s info and data binds of the documents, handles the model’s date on the net, uses RMI technology and uses maintaining the feature conformity to resolve the conflict in the collaborative design. This framework overcomes the shortcoming of depending on the design history, and has a good effect on the更多还原