并行设计中基于特征约束的变更传播研究

摘要

The traditional change propagation method oftens obtain searched results that may not satisfy with user' s design intent.To solve the problem, this paper proposed a new method to improve the accuracy and effectiveness for change propagation analysis.First, it studied the expression of feature constraint oriented change propagation, and put forward the constraint structure model to describe product constraint topology.Then gave the change propagation of different types of constraint and the algorithm of changed feature constraint solving.Finally, proposed an example.The experiment shows that the method is more accuracy and effectiveness than others.%为了解决工程变更传播中难以搜索变更传播路径和难以计算变更程度的问题,以产品特征约束为基础,分析并行设计中的变更传播过程,提出了约束结构树的概念和构建方法,用于表达产品特征约束的拓扑关系;然后对不同类型特征约束的变更传播进行了推理,给出了被影响的特征约束的求解算法;最后以某型号人孔为例说明了变更传播实现机制和方法.实验结果表明,该方法在很大程度上改进了分析变更传播的准确性和有效性.