Contrast, analog extending method for product function

A technology of product functions and expansion methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of not considering whether the number of layers of similar function trees is the same, inconvenient for conventional understanding, and not considering gate types, etc.

Inactive Publication Date: 2008-04-02
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method proposes an improved similarity calculation formula to calculate the comparison similarity, but in this method, the improved similarity calculation formula is a non-linear formula, which is inconvenient for people's conventional understanding and has a large amount of calculation; The comparison similarity calculated by this method is not suitable for the proposed function tree extension method. The greater the comparison similarity between two comparison similar functions, the smaller the calculated comparison similarity, and the greater the possibility of being discarded. It is obviously contradictor

Method used

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  • Contrast, analog extending method for product function
  • Contrast, analog extending method for product function
  • Contrast, analog extending method for product function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Embodiment 1: Take the design process of a thermos cup as an example.

[0093] 1. Create a database. The database record format corresponding to matter-element and its relationship is shown in Table 1:

[0094] Table 1

[0095] Field Name

ID

N

CH

v

type

Field Type

field description

String, 10

Numbering

String, 20

name

String, 20

child node

Float,

Quantity

Integer, 1

Node's Gate Type

AND gate is 1, OR gate is 2

NAND gate is -1, NOR gate is -2

[0096] The database record format corresponding to the constraint information is shown in Table 2:

[0097] Table 2

[0098] Field Name

ID

N

CH

v

Field Type

field description

String, 10

Numbering

String, 20

Types of

String, 20

name

Float,

Quantity

[0099] 2. The designer draws the function tree of...

Embodiment 2

[0157] Embodiment 2, the design process of multifunctional mobile phone

[0158] 1. Create a database.

[0159] The database record format corresponding to the matter-element and its relationship is shown in Table 6.

[0160] Table 6

[0161] Field Name

ID

N

CH

v

type

Field Type

field description

String, 10

Numbering

String, 20

name

String, 20

child node

Float,

Quantity

Integer, 1

Node's Gate Type

AND gate is 1, OR gate is 2

NAND gate is -1, NOR gate is -2

[0162] The database record format corresponding to the constraint information is shown in Table 7.

[0163] Table 7

[0164] Field Name

ID

N

CH

v

Field Type

field description

String, 10

Numbering

String, 20

Types of

String, 20

name

Float,

Quantity

[0165] 2. The designer draws the func...

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PUM

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Abstract

A contrast similar expansion method of product function is characterized by provided with a known product knowledge base storing a function tree and bounded relation information of known product and building an original function tree and bounded relation information of novel product; on the base of combining a similar theory and an extension theory and according to the specific needs of product designers, any function node of the original function tree of novel product is compared with the product functions in the known knowledge base; according to a certain rule, the novel functions are appended to the product function tree to generate a novel product function tree. Compared with the original product function tree, the novel product function tree is richer; therefore, the possibility of obtaining an innovation function is greatly increased. The invention gives full play to the guiding function of designers in the process of product design and makes designers release from the complicated and mechanical work of data comparison, thereby providing a design method which has high freedom, strong deduction capacity and aims at innovation of product function.

Description

technical field [0001] The invention relates to a specific method for establishing a function tree in auxiliary product function design, in particular to a method for establishing an auxiliary function tree based on similarity theory and extension theory. Background technique [0002] Conceptual design is the most creative activity in the product design phase. It determines 80% to 90% of the product life cycle design cost, and the design defects produced by it cannot be made up by the subsequent design process. Functional decomposition is a critical stage of conceptual design. Building a functional tree is one of the main methods for functional decomposition. The root node of the tree is the function transformed from the user's needs, and the leaf node is the basic function that does not need to be decomposed. At present, the establishment of product function tree mainly depends on the knowledge level of domain experts. However, it is difficult to consider the problem very...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F17/50
Inventor 刘晓平路强陆劲挺唐益明秦晋石慧郑利平徐本柱
Owner HEFEI UNIV OF TECH
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