Generalized functional model building method considering reliability design requirements

Abstract

The generalized functional model refers to a functional model which is formed in a generalized mode after functional maintenance requirements are added on the basis of the traditional functional model. When the traditional functional model is built, a reliability factor is not considered comprehensively, and the reliability requirements corresponding to each function are not clearly expressed in the model. In order to solve the above problems, a generalized functional model building method considering reliability design requirements is designed. The method comprises steps: 1, a functional model containing the functional maintenance requirements is expanded, functional implementation requirements are firstly determined according to requirements of a customer, the reliability design requirement corresponding to each functional implementation requirement is determined through recognizing a functional failure mode on the basis, the functional maintenance requirements are formed finally through merging, and functional model expansion is completed; and 2, a functional principle model characterization method is designed, and the generalized functional model is built. That is, a set of metamodel for the functional model is designed, a product working principle is combined and the metamodel is used to build the generalized functional model for the product.

Description

Technical field [0001] The invention relates to the realization process of reliability design of complex products, a generalized function model construction method considering reliability design requirements, and helps designers to carry out reliability design by expanding and modeling product functions. The invention belongs to the technical field of product design. Background technique [0002] Product quality characteristics include special quality characteristics and general quality characteristics. Traditional functional model construction methods include function-behavior-structure (FBS), flow diagram-based, and generalized process function analysis methods, etc., which mainly focus on characterizing function realization requirements, and the input and output information of the model is not clear, which greatly simplifies the process of product integration. The complex cross-linking relationship between the products does not fully consider the function retention requi...

AI Technical Summary

Problems solved by technology

Traditional functional model construction methods include function-behavior-structure (FBS), flow diagram-based, and generalized process function analysis methods, etc., which mainly focus on characterizing function realization requirements, and the input and output information of the model is not clear, which greatly simplifies the process of product integration. The complex cross-linking relationship between the products does not fully consider the function retention requirements of the product, and the relationship between each function realization requirement and the function retention requirement is not clearly represented in the model, so that the designer cannot systematically consider the function realization requirements of the product when designing the product Reliability design requirements are the direct expression of function maintenance requirements, and also the carrier of customers' ease of use, durability, and ease of use. Reliability will directly affect the marketability of products. Therefore, it is necessary to provide a method to enable designers to systematically determine reliability design requirements in the product design process and implement them into specific design schemes

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