Product function gene modeling system and method

A technology of product function and modeling method, applied in the direction of gene model, special data processing application, instrument, etc., can solve the problem of establishing product part evolution reasoning, etc.

Inactive Publication Date: 2010-07-14
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Knowledge modeling is the basis and key to realize intelligent design, however, the current gene modeling method of product function is still unable to use XML and matrix representation to establish evolutionary reasoning of product parts

Method used

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  • Product function gene modeling system and method
  • Product function gene modeling system and method
  • Product function gene modeling system and method

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Experimental program
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Embodiment 1

[0064] On the basis of product function modeling and product function model, the present invention decomposes and maps product functions into product features, and then encodes the functions through genes. On this basis, combine XML and matrix, describe the product function, and design the corresponding product instance reasoning and evolution method.

[0065] see figure 1 , the present invention discloses a product function gene modeling system, which includes a behavior description unit, a total function determination unit, and a total function decomposition unit. The behavior description unit is used to describe the functional relationship of parts between products, which includes one or more of occlusion, connection, translation, rotation, fixed position, covering, assembly condition, and lubrication. The overall function determination unit is used to analyze the functional requirements put forward by users, grasp the core of the overall design task, and obtain the design...

Embodiment 2

[0107] 1 product function model

[0108] 1.1 Definition of product functions

[0109] How to express the function of the product reasonably is the first step in product design. The expression of function is closely related to the definition of function, and different definitions lead to different expressions. And because function is a relatively subjective concept, there is no completely unified definition so far. Functional definitions can be summarized in the following three perspectives [see Reference 1]:

[0110] (1) Functional use point of view.

[0111] (2) System view.

[0112] (3) Behavior point of view.

[0113] After comparing the above three views, it is found that the behavioral view is easy to apply to evolutionary algorithms and genetic coding. Because, from this point of view, functions are more conducive to being summarized and abstracted, and more conducive to being expressed in a coded way. Based on this, the present invention provides a theoretical de...

Embodiment 3

[0228] Take a certain part of a lathe as an example. The function of this part is "reciprocating pressing". The part is genetically coded, so as to describe the function realized by this part in the form of code. The functional structure of the part Figure 8 shown.

[0229] Table 2 is the functional element matrix formed by the functional semantic network of the part, which gives the behaviors and the geometric parts they act on, and the initial scheme individual can be formed through different combinations. Due to space limitations, the corresponding FTML documents will not be given here. After functional decomposition, it is found that the total function of the product part has 5 behaviors, which act on 5 geometric parts respectively. The evaluation index is simplified to meet the basic function index and the cost is low. The crossover rate is 0.9, the mutation rate is 0.05, and the maximum evolution algebra is 200, the algorithm ends when the average fitness of the ...

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Abstract

The invention discloses a product function gene modeling system and method. The system comprises a behavior describing unit, a overall function determining unit and a overall function decomposing unit, wherein the behavior describing unit is used for describing the functional relation of parts among products; the overall function determining unit is used for analyzing functional requirements suggested by users, grasping the core of the overall design task to obtain the design requirements of the products and abstracting the overall function of the products; the overall function decomposing unit is used for decomposing the overall function into a plurality of simple subfunctions. The system also comprises a product function reasoning module which further comprises an FTML file reading unit, a function element matrix converting unit, a matrix adjusting unit and an FTML film converting unit. Aiming at function design knowledge and design object knowledge, the invention provides the function modeling method based on gene encoding and adopts an extensive makeup language (XML) and a matrix to represent and establish an evolving and reasoning method of the product parts on the basis of encoding.

Description

technical field [0001] The invention belongs to the technical field of product design, and relates to a product function gene modeling system and a product function gene modeling method. Background technique [0002] In recent years, with artificial intelligence being continuously introduced into the design field, product design is gradually developing towards intelligence, and the research on intelligent design has attracted more and more attention. Intelligent design mainly includes two tasks: first, to establish a design knowledge model; second, to develop a computer application software system to realize this model. Knowledge modeling is the basis and key to realize intelligent design. However, the current gene modeling method of product function cannot use XML and matrix representation to establish evolutionary reasoning of product parts. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a product function ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/12
Inventor 郝泳涛楼狄明
Owner TONGJI UNIV
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