关键词: 概念设计, 模糊需求, 产品设计, 知识图谱, 工程参数

Abstract: In the fuzzy front-end stage of product conceptual design,there are a large number of expected requirements for product performance represented by natural language.This type of requirement is not only an important measure of user satisfaction with products,but also a source of motivation to promote product innovation and development.However,this type of requirement is often the one with the most significant characteristics of fuzziness,incompleteness and subjective limitations,and lacks accuracy in the representation and transformation of product conceptual design.By quoting the general engineering parameters in the classical TRIZ theory,the Product (patents/requirements)—General engineering parameters—Structure (PGS) mapping model for the above design problems was constructed,which laid a foundation for the mapping transformation of fuzzy front-end requirements to the design process at the theoretical level.Under the guidance of the mapping model,the domain knowledge graph was constructed based on the patent data,which realized the identification and extraction of performance parameter entities and enhanced the availability of the knowledge graph supporting conceptual design.Combined with the PGS mapping model and domain design knowledge graph,the structural representation and completion of the fuzzy front-end requirements in the form of engineering parameters were realized,and the structural solution space of conceptual design was further constructed.The knowledge graph was constructed in the field of mechanical equipment and verified by an example.

Key words: concept design, fuzzy requirements, product design, knowledge graph, engineering parameters