Function analysis method for mature product

A technology of product functions and analysis methods, applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as undeveloped product function analysis methods

Inactive Publication Date: 2012-06-20
HOHAI UNIV CHANGZHOU
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  • Abstract
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Problems solved by technology

However, in the existing patents, there is no functional analysis method for mature products

Method used

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  • Function analysis method for mature product
  • Function analysis method for mature product
  • Function analysis method for mature product

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Experimental program
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Embodiment

[0086] After analyzing the product, it is concluded that the product contains nine functional elements F 1 ~F 9 , analyzing its relationship (such as Figure 11 ), use the above method to calculate the correlation strength between each functional element, and construct a functional relationship matrix (such as Figure 12 ). The method of λ-intercept matrix in fuzzy mathematics is used to process the functional relationship matrix, where λ=0.7 is taken to obtain the upper-level function F' of the functional element 1 ~F' 3 , F' 1 ~F' 3 see the relationship Figure 13 , whose functional relationship matrix is ​​derived from Figure 12 The matrix is ​​stripped out, and the stripping steps are as follows:

[0087] (1) OK Figure 11 The set of functional element pairs smaller than λ and the correlation strength of each pair of functional elements are expressed as {{f i , f j}, I ij}, f i , f j , I ij Respectively represent functional element i, functional element j a...

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Abstract

The invention relates to a function analysis method for a mature product, and belongs to the technical fields of mechanical design and automation. The method comprises the following steps of: first defining a function level matrix and a function relationship matrix to describe functions, and simultaneously constructing a function element list; then analyzing function elements of a product of a certain kind on the basis of the function element list, and representing a relationship between every two function elements by using the function level matrix and the function relationship matrix; and finally processing the function relationship matrix by adopting an alpha-intercept matrix method for fuzzy design to obtain a function tree of the product to realize function analysis on the product from bottom to top. By the method, the problem of over-coarse or over-fine granularity is solved; and in addition, computer programming is facilitated by representing the functions and the relationship between every two functions with the function level matrix and the function relationship matrix.

Description

technical field [0001] The invention relates to a mature product function analysis method, which belongs to the field of mechanical design and automation. Background technique [0002] Product functional analysis is the basis of product modularization, and functional analysis is essential for both innovative product design and modification of existing products. The general process of functional decomposition is to start from the total function of the product, and use the method of advancing backwards to find the means to realize the current function until the final function. Existing literature often proposes a functional decomposition method of "functional domain-physical domain-principle domain" according to the theory of axiomatic design (AD), and converts functions into behavioral descriptions, but the basic idea still follows the general Functional decomposition process. For completely innovative products, the above method is in line with the designer's thinking habit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 苑明海白颖纪爱敏丁月
Owner HOHAI UNIV CHANGZHOU
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