CAJ | 학술논문

为了在机械产品零部件的设计过程中给设计人员提供更高效的知识服务，提出了一种基于实例推理的快速设计方法。首先，在基于实例检索各属性相似度的计算研究中，建立了针对属性类型为确定数值、确定符号、模糊数值、模糊区间以及模糊符号等5种属性的相似度计算模型。然后，在权重系数分配的研究中，同时考虑了主观权重和基于相似度离差信息的客观权重，以乘法合成计算的组合权重来计算实例的全局相似度。最后，将相似度计算方法和权重分配方法应用到数控刀架设计实例中，结合 Matlab 软件中的矩阵计算功能，从数据库中检索出与新设计实例最相似的实例。结果表明，针对5种属性类型所提出的全局相似度及权重系数的分配对实例的检索更精确，有助于设计人员达到快速设计的目的。
위료재궤계산품령부건적설계과정중급설계인원제공경고효적지식복무，제출료일충기우실례추리적쾌속설계방법。수선，재기우실례검색각속성상사도적계산연구중，건립료침대속성류형위학정수치、학정부호、모호수치、모호구간이급모호부호등5충속성적상사도계산모형。연후，재권중계수분배적연구중，동시고필료주관권중화기우상사도리차신식적객관권중，이승법합성계산적조합권중래계산실례적전국상사도。최후，장상사도계산방법화권중분배방법응용도수공도가설계실례중，결합 Matlab 연건중적구진계산공능，종수거고중검색출여신설계실례최상사적실례。결과표명，침대5충속성류형소제출적전국상사도급권중계수적분배대실례적검색경정학，유조우설계인원체도쾌속설계적목적。
In order to provide more efficient knowledge service for the design process of mechanical products,a rapid design method based on case-based reasoning is proposed.First,the similarity cal-culation models for five attribute types including crisp number,crisp symbol,fuzzy number,fuzzy interval and fuzzy linguistic symbol are structured based on the calculation of similarities of different attributes in case retrieval.Then,in terms of the distribution of weight coefficients,the subjective weight and the objective weight which is based on the deviation information of similarity values are combined to form synthetic weight and used to calculate the global similarity of instances.Finally, the similarity measurement and weight assignment methods are applied in a CBR(case-based reason-ing)system based CNC (computer numerical control)turret design.By the matrix calculation func-tion of Matlab,the most similar instance to this new design instance is retrieved from the instance da-tabase.The results show that the global similarity of these five attribute types and the distribution of weight coefficients can improve the accuracy of case retrieval,which helps designers to achieve the goal of rapid design.