工程设计中的约束检测及可视化

Detection & Visualization of Constraints in Engineering Design

工程设计问题本质上是一个约束满足问题 ,以往的研究集中在约束的求解上 ,忽略了对约束的检测和约束信息的可视化 ,随着工程规模的扩大和领域专家的需要 ,现代 CAD系统与其约束自适应 ,不如把问题检测出来并以可视的方式告知系统设计者 ,于是探讨工程设计中的约束分类、合理组织约束信息的数据结构、研究约束可视化形式方法具有重要的理论意义和实际应用价值。在基于模板思想的基础上 ,这里给出了以模板为载体、多种知识表述方法相结合的约束信息表示形式 ,将层次细节模型运用于工程约束 ,提出了一种约束信息层次可视化模型 ,针对冷冲模设计和反应堆概念设计 ,给出了一个约束可视化原型系统 CCVS。

The problem of engineering design is, by its nature, that of constraints satisfaction. The study had paid more and more attention to constraints solvability ignoring its detection and visualization. With extending of engineering and needs of domain expert, it is better to detect constraints and show them to user in some way rather than self-adapt for modern CAD system. So it is very important to study constrain classification, data structure and methodology of visualization. Based on technology of template and level of detail, paper gives presentation of constraint information, which combines multiple knowledge describing methods. According to the features of engineering constraint hierarchy as well, such as system of Die CAD and fusion reactor conceptual design, a visualization prototype model of constraint information hierarchy, is developed.