A method for extracting key elements of product design

Abstract

The invention provides a DWCN_NodeRank (NR) algorithm-based key-element extraction method of product design. Firstly, for different design scenes of products, a plurality of SysML models of the products corresponding to the different design scenes are acquired; design elements and relationships between all the design elements are respectively read from each SysML model; then a contribution degree between each pair of the design elements in a design element set is calculated according to relationship strength values of five relationship types, and a design structure matrix IDSM based on the design elements is established; and finally a weight vector NR of all the design elements is calculated in an iterative manner, and the design elements corresponding to elements which are in the obtained weight vector NR and greater than a set threshold value delta are taken as key elements. The method fully utilizes the various relationships embodied by the system models, and compared with a simulation manner or a manner of using probability reckoning according to actual use effect, the method is short in time and high in efficiency, and can deal with the key-element extraction problem in a large number of the system models.

Description

technical field [0001] The invention relates to a method for extracting key elements based on a system structure model, which uses a DWCN_NodeRank algorithm to extract key elements in the system structure. Background technique [0002] The key elements are the core elements of the product that product designers pay attention to when designing. Obtaining the key elements of product design is not only the accumulation of knowledge in the product design process, but also provides a basis for designers to quickly grasp the core elements of design, thereby improving design efficiency . In the document "Capturing Experimental Design Insights in Support of the Model-based System Engineering Approach.Procedia Computer Science, 2015.44:p.315-324", MacCalman et al proposed an MBSE methodology for extracting key elements from the experimental design of an integrated system model , because the extraction of key elements requires experimental design first, and then the simulation analys...

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Problems solved by technology

In the document "Capturing Experimental Design Insights in Support of the Model-based System Engineering Approach.Procedia Computer Science, 2015.44:p.315-324", MacCalman et al proposed an MBSE methodology for extracting key elements from the experimental design of an integrated system model , because the extraction of key elements requires experimental design first, and then the simulation analysis of the integrated system model to extract key elements, resulting in time-consuming and laborious extraction of key elements using this method

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