A Qualitative Design Method for Maintainability in Product Design Stage

Abstract

The invention discloses a maintainability qualitative design method in the product design stage, comprising the steps of: establishing a maintainability design obstacle tree for a design target; performing qualitative analysis on the established maintainability design obstacle tree, and analyzing the minimum cut set of the maintainability design obstacle tree and the minimum path set to obtain the conflict vector of the design goal; obtain the corrected maintainability conflict matrix according to the TRIZ conflict matrix, determine the deterioration parameters and improvement parameters of the maintainability design conflict matrix, and establish the mapping relationship between the invention principle set and the product design feature set; Based on the revised maintainability conflict matrix of TRIZ, the principle understanding vector of TRIZ is obtained, and then combined with the obtained conflict vector, the relationship matrix between the design conflict vector and the principle understanding vector is obtained, and the corresponding conflict vector-principle understanding vector relationship equation of the conflict design system is established , to help design decisions. The present invention provides a method for resolving conflicts between maintainability design requirements and other quality design features.

Description

technical field [0001] The invention relates to the technical field of maintainability design, in particular to a maintainability qualitative design method in the product design stage, in particular to a maintainability qualitative design method in the product design stage based on obstacle tree and maintainability conflict matrix based on TRIZ theory. Background technique [0002] Design quality is very important to products, and obtaining high-quality products with the least cost has become the main pursuit of product design today. The formation of product design quality is not only in the manufacturing stage, but also in the design stage and after-sales service stage, especially the design stage plays a decisive role. Maintainability is a quality characteristic of the product itself and must be injected into product design. Incorporating maintainability requirements into the product design process and realizing maintainability requirements through design and verification...

AI Technical Summary

Problems solved by technology

In some cases, maintainability deficiencies found through maintainability tests are simply ignored because it is difficult to modify the design in large quantities

[0005] 2) When maintainability requirements conflict with product functions, effective conflict resolution methods cannot be provided

When design guidelines guide designers in product design, they lack a clear and operable conflict resolution method to solve the conflict between maintainability requirements and functional requirements during product design

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