In this paper, a new systematic methed of quantitative DFA is presented based on the function analysis.The reduction of the number of components forming product is realized by incorporating some parts as the features ...In this paper, a new systematic methed of quantitative DFA is presented based on the function analysis.The reduction of the number of components forming product is realized by incorporating some parts as the features of others. In order to evaluate assemblability of a product objectively, accurately and completely, the factors affecting assembability have been identified in terms of the production mode used to assemble product, and neural network and fuzzy set theory are adopted to quantify the effect of factors on assemblability. A case study is given, and the results demonstrate the effectiveness and validity of the method.展开更多
By applying genetic engineering methodology into the incremental product growth design,a generic structural design approach is put forward,as well as an intelligent evolution strategy of the product units growth,which...By applying genetic engineering methodology into the incremental product growth design,a generic structural design approach is put forward,as well as an intelligent evolution strategy of the product units growth,which is based on the multilevel Decomposition and Reconstruction of product gene. To guarantee a successful transformation from functional requirement to geometry constraints between parts in the incremental growth design of mechanical product,the integrated design method incorporates the design requirements and assembly perspective into product genetic information. The mathematical model of state transition during incremental design process are given at first,based on which product can grow step by step from functional requirement to the final geometrical product structure automatically. And then,to quantify the measurement of assembly efficiency,a mathematical model as well as a technology to quantify assembly constraints was developed by application of some fuzzy logic algorithms. Finally,examples have been proved that the approach is promising.展开更多
文摘In this paper, a new systematic methed of quantitative DFA is presented based on the function analysis.The reduction of the number of components forming product is realized by incorporating some parts as the features of others. In order to evaluate assemblability of a product objectively, accurately and completely, the factors affecting assembability have been identified in terms of the production mode used to assemble product, and neural network and fuzzy set theory are adopted to quantify the effect of factors on assemblability. A case study is given, and the results demonstrate the effectiveness and validity of the method.
基金Funded by the Shandong Natural Science Foundation(Y2005F26) and the Scientific Research Foundation for doctor of Jinan Uni-versity(B0538)
文摘By applying genetic engineering methodology into the incremental product growth design,a generic structural design approach is put forward,as well as an intelligent evolution strategy of the product units growth,which is based on the multilevel Decomposition and Reconstruction of product gene. To guarantee a successful transformation from functional requirement to geometry constraints between parts in the incremental growth design of mechanical product,the integrated design method incorporates the design requirements and assembly perspective into product genetic information. The mathematical model of state transition during incremental design process are given at first,based on which product can grow step by step from functional requirement to the final geometrical product structure automatically. And then,to quantify the measurement of assembly efficiency,a mathematical model as well as a technology to quantify assembly constraints was developed by application of some fuzzy logic algorithms. Finally,examples have been proved that the approach is promising.
