协同CAD系统并发操作冲突推理

The conflict inference of concurrent operation in collaborative CAD system

一致性保证是计算机支持的协同工作的关键技术之一。协同者的并发操作的冲突是引发不一致的主要原因 ,并发操作的冲突判别是提高系统效率的一个重要的方面。分析了协同CAD系统的并发操作冲突的机理 ,给出了操作命令的一般表示方法 ,提出一个通用的基于该描述的冲突判别推理方法 ,并基于领域知识将该方法用于二维绘图系统和三维产品特征建模系统中的并发操作冲突的分析 ,实验结果表明该方法可行 。

Consistancy guarantee is one of the key techniques of collaborative works supported by computer. The concurrent operation conflict made by collaborator is the chief reason leading to inconsistancy, the conflict discrimination of concurrent operation is an important aspect of hightening the systematic efficiency. This paper analyzed the mechanism of concurrent operation conflict in collaborative CAD system. It presented the general expressing method of operation order, put forward the versatile distinguishing inferential method based on this description, and this method is applied to the analysis of concurrent operation conflict in 2D graphics system and 3D feature modeling system of products based on field knowledge. The results of test show that this method is feasible with a high collaborative efficiency.