基于特征模型的网络实时协同建模技术

A Realtime Collaborative Modeling Technology Based on Feature Model Over Internet

计算机网络实时协同设计实现的关键是协同设计的几何模型在网络环境中实时共享,即实现模型数据的实时传输。原有CAD模型的描述是直接记录三维模型所有组成元素,所记录的数据量太大,不能适应现有Internet网络环境协同设计的要求。本文提出了基于特征模型的网络实时协同设计技术,定义了一种具有通用性的特征模型作为数据交换的中介,以模型的生成元素记录特征模型,模型记录的数据量小,满足了现有网络环境实时传输的要求,并研究了数据的局部操作技术,以实现CAD三维模型的跨平台实时设计和编辑。

Realtime sharing geometric model is the key to computer supported realtime collaborative design over Internet,that is,the model data must be realtime transmitted, but CAD model description inhered memorize ingredient directly. The large volume of data can't be realtime transmitted over Internet. Then a realtime collaborative modeling technology based on feature model over Internet has been suggested. It defines a general feature model which can be described with construct element as model data exchange media. Because the model data volume is little, then it satisfy with realtime data transmission over Internet. With part data operation technology, it is possible to realize realtime collaborative design or edit 3D CAD model between different CAD system.