概念形状设计中的不确定关系建模

On Modeling of Uncertain Relations in Conceptual Shape Design

主要进行计算机辅助概念形状设计的研究。在概念设计阶段产品信息残缺的情况下 ,简要介绍了一种面向概念形状设计的定性立体的表达方法 ,即定性立体建模。着重针对定性立体建模中出现的不确定特性 ,采用证据理论进行领域关系的不确定关系建模 ;并借鉴层次分析法的思想 ,提出了一种比较权重法来确定其概率分配函数。基于产生式规则 ,探讨了领域关系的不确定性在不确定关系建模过程中的传递与合成。最后 。

Research on computer aided conceptual shape design is presented in this paper. In the situation where product information is deficient in conceptual design, a qualitative representation approach to solids is presented for conceptual shape design, namely, qualitative solid modeling. Due to the uncertain features arising in the process of qualitative solid modeling, uncertain relation modeling to domain relations is put forward by the evidential theory.Using the experience of the analytic hierarchy process for reference, a comparative weight method is presented to determine the probability assignment function. Based on the production rules, the transfer and synthesis of the domain relation uncertainty are discussed in the process of uncertain relation modeling. Finally, a prototype for conceptual shape design is introduced briefly.