decoupling process of a coupled design using the triz … · axiomaticdesign triz 2 1 3 2 1 dp dp x...

Hanyang University, Automatic Design Lab. 1

Gwang-Seob Shin and Gyung-Jin Park

DECOUPLING PROCESS OF A COUPLED DESIGN USING THE TRIZ MODULE

Division of Mechanical and Information Management Engineering, Hanyang University

Hanyang University, Automatic Design Lab.2

Introduction

(1) Axiomatic Design

- Axiomatic design has the advantage in deriving a large-scale

initial design.

- Does not specifically indicate how to decouple a coupled design.

(2) Search Process for an Uncoupled or Decoupled Design

- TRIZ is employed for the decoupling process.

- Coupling phenomena are classified into six patterns.

- Each pattern could be decoupled by an appropriate TRIZ module.

(3) Example Problems

- Design to improve the tape feeder.

- Design of a device for adjusting the laser marker beam.


Axiomatic Design

Functional Domain

Physical Domain

Functional Requirements

Design Parameters

axioms

axioms

axioms

axioms

Axiom 1: The Independence AxiomMaintain the independence of functional requirements.

Axiom 2: The Information AxiomMinimize the information content.

DPsAFRs

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AAAAAAAAA

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iij DP

FRA

Uncoupled Decoupled Coupled

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Classical TRIZ

TRIZ was developed by Genrich Altshuller and his colleagues in the

former USSR in 1946

TIPS (Theory of Inventive Problem Solving)

“TRIZ" is the acronym for the same phrase in Russian

Most of innovative solutions can be found through analogical

reflection of certain patterns or principles derived from previous

cases of inventions


TRIZ (Technical Contradictions)

Technical contradictions are the classical engineering “trade-offs.” When something

gets better, something else gets worse.

TRIZ research has identified 40 principles that solve the technical contradictions.


TRIZ (Su-Field Model)

Su-Field Model (SFM)

Substance-Field (Su-field) Analysis is a TRIZ analytical tool for modeling

problems related to existing technical systems.

Every system is created to perform some type of functions. The desired function

is the output from an object or substance (S1), caused by another object (S2)

with the help of some means (types of energy, F).

Standard 76 solutions : Class 1 ~ Class 5


Flow of the Proposed Design Process


The Use of TRIZ According to the AD Pattern(1)

Axiomatic Design Pattern1. Coupled design with insufficient design parameters (AD1)

2

1

3

2

1

DPDP

XXO

OOX

FRFRFR

2. When functional requirements are added (AD2)

2

1

3

2

1

))(()(DPDP

OXO

OOX

FRFRFR

3. Decoupled design with large off-diagonal terms (AD3)

3

2

1

3

2

1

DPDPDP

xXOOXOOOX

FRFRFR

3

2

1

3

2

1

DPDPDP

XXOXXOOOX

FRFRFR

4. Coupled design with technical contradiction (AD4)

4

3

2

1

3

2

1

DPDPDPDP

XXOOOOXOOOOX

FRFRFR

5. Coupled design with excessive design parameters (AD5)

6. Mixed problem (AD6)

3

2

1

4

3

2

1

DPDPDP

xOOXOXXXXOOX

FRFRFRFR


1) Coupled design with insufficient design parameters (AD1)

• Separation Rule

• Effect

• SFM Class 5

TRIZAxiomatic Design

2

1

3

2

1

DPDP

XXO

OOX

FRFRFR

Necessary to add a DP

• Separate a DP to add a DP -> Separation Rule

• Use the effect database to add a DP -> Effect

• Import the substance to add a DP -> SFM Class 5


2) When functional requirements are added (AD2)

• Effect

• SFM Class 1

• SFM Class 4


2

1

3

2

1

))(()(DPDP

OXO

OOX

FRFRFR

Need to generate a new idea for the new FR

• Use the effect database to make a new idea-> Effect

• Combine the new substance field model

-> SFM Class 1

• Combine the new measuring system -> SFM Class 4



• SFM Class 3

• SFM Class 2

• Contradiction Table


3

2

1

3

2

1

DPDPDP

xXOOXOOOX

FRFRFR

Enhance or change the insufficient DP

Enhance the insufficient system efficiency

-> SFM Class 3

Evolution of the substance field model -> SFM Class 2

3

2

1

3

2

1

DPDPDP

XXOXXOOOX

FRFRFR

• Contradiction Table

TRIZAxiomatic Design Need to change a DP for uncoupling

• When something gets better, something else

gets worse-> Contradiction Table

3) Decoupled design with large off-diagonal terms (AD3)

4) Coupled design with technical contradiction (AD4)


4

3

2

1

3

2

1

DPDPDPDP

XXOOOOXOOOOX

FRFRFR

• SFM Class 3

• System evolution law

TRIZAxiomatic Design Need to unify excessive DPs

• Enhance the efficiency through decreasing the

components -> SFM Class 3

• Decrease unnecessary resource ->System evolution law

•SFM Class 1

•ARIZ

TRIZAxiomatic DesignWhen causes are mixed

• Divide the Substance Field Model -> SFM Class 1

• Need to apply various methods -> ARIZ

3

2

1

4

3

2

1

DPDPDP

xOOOXXXOXOOX

FRFRFRFR

5) Coupled design with excessive design parameter (AD5)


6) Mixed problem (AD6)


AD-TRIZ Relationship Table

2

1

3

2

1

DPDP

XXO

OOX

FRFRFR

2

1

3

2

1

))(()(DPDP

OXO

OOX

FRFRFR

3

2

1

3

2

1

DPDPDP

xXOOXOOOX

FRFRFR

3

2

1

3

2

1

DPDPDP

XXOXXOOOX

FRFRFR

4

3

2

1

3

2

1

DPDPDPDP

XXOOOOXOOOOX

FRFRFR

3

2

1

4

3

2

1

DPDPDP

xOOXOXXXXOOX

FRFRFRFR

Axiomatic DesignPattern

Design Matrix Related TRIZ modules

AD1Separation rules, Effect

SFM Class 5

AD2 Effect, SFM Class 1, Class 4

AD3SFM Class 3, Class 2,

Contradiction table

AD4 Contradiction table

AD5SFM Class 3

Laws of Evolution

AD6 SFM Class 1, ARIZ


Example Problems

1) Design to Improve the Tape Feeder

2) Design of a Device Adjusting a

Laser Marker Beam


Design to Improve the Tape Feeder (1)

Chip Mounter

Tape Feeder

Cover tape

Chip

Position hole

Cover Tape and Chip

Sprocket

Device for feeding various electronic components on a

circuit board.

The Link and Sprocket of the Feeder



8

7

6

5

4

3

2

1

8

7

6

5

4

3

2

1

DPDPDPDPDPDPDPDP

XOOOOOOOOXOOOOOOOOXOOOOOOOOXOOOOOOOOXXOOOOOOXXOOOOOOOOXOOOOOOOOX

FRFRFRFRFRFRFRFR

-> Coupled design with the technical contradiction (AD4)

FR1 : Install the tape reel.

FR2 : Fix the component on the picking position.

FR3 : Peel the cover tape.

FR4 : Move the component as much as the pitch distance.

FR5 : Change the empty reel.

FR6 : Guide the empty tape.

FR7 : Guide the cover tape.

FR8 : Change the pitch distance.

DP1 : Pocket reel

DP2 : Tape guide

DP3 : Drain roller

DP4 : Sprocket, Ratchet

DP5 : Rear pocket

DP6 : Path of the empty tape

DP7 : Guider of the cover tape

DP8 : Push lever link



15 : DynamicsDivide an object into elements capable of changing their position relative to each other.

Apply Contradiction MatrixCoupled design with technical contradiction (AD4)

Contradiction Matrix

Feature to improve : No.27 – Reliability

Undesired Result : No. 4 - Length of stationary object

-> Apply Contradiction Matrix

15,9,14,4

15. Dynamics, 9. Prior counter-action

14. Spheroidality, 4. Asymmetry



8

7

6

5

4

3

2

1

8

7

6

5

4

3

2

1

DPDPDPDPDPDPDPDP

XOOOOOOOOXOOOOOOOOXOOOOOOOOXOOOOOOOOXXOOOOOOOXOOOOOOOOXOOOOOOOOX

FRFRFRFRFRFRFRFR

DP3 : (Drain roller ->Drain sping)

Decoupled Design

New design

SEPERATEDLINK

Current design

DIRECT LINK

8

7

6

5

4

3

2

1

8

7

6

5

4

3

2

1

DPDPDPDPDPDPDPDP

XOOOOOOOOXOOOOOOOOXOOOOOOOOXOOOOOOOOXXOOOOOOXXOOOOOOOOXOOOOOOOOX

FRFRFRFRFRFRFRFR

Coupled Design

Separate the link to adjust the pulling force of the cover tape

independently


Design of a Device for Adjusting the Laser Marker Beam

Function :

Mark the logo, text or other information on the surface of various IC packages

Laser Maker


Function of a Beam Adjusting Device

• Adjusts the diode laser with the path of a YAG

marking laser

• The vertical and horizontal positions and the angle

of the beam adjusting device should be adjusted to

the right datum point of marking.


Axiomatic Analysis of a Beam Adjuster

Illustration for the functional requirement

3

2

1

5

4

3

2

1

DPDPDP

XOOOXOOXOOOXOOX

FRFRFRFRFR

A beam adjuster and DPs

CsC1 : Install space C2 : Manufacturing cost

DP1 : Vertically moving component

DP2 : Supporting blockDP3 : Fixing screw

Coupled design with insufficient design parameters (AD1)

FR1 : Align the vertical position of the diode laser beam.

FR2 : Align the vertical angle of the diode laser beam.

FR3 : Align the horizontal position of the diode laser beam.

FR4 : Align the horizontal angle of the diode laser beam.

FR5 : Fix the beam alignment.


Coupled Design

AD1 Coupled design with insufficient

design parameters

The Use of TRIZ According to the AD Pattern

Separation RuleSFM Class 5 Separation rule

Enhance the insufficient system efficiency

AD3Decoupled design with

large off diagonal terms (AD3)

SFM Class 2,3

2

1

2

1

DPDP

XXOX

FRFR

12

1 DPXX

FRFR

Design No.1

Design No.2

Design No.3


Select the Final Design Using the Information Axiom

Compare the information contents

I1=6.05 > I2=0.78log(1 )n

cr ii

I A

5

4

3

2

1

5

4

3

2

1

DPDPDPDPDP

XOOOOOXXOOOOXOOOOOXXOOOOX

FRFRFRFRFR

3

2

1

5

4

3

2

1

DPDPDP

XOOOXOOXOOOXOOX

FRFRFRFRFR

Decoupled DesignCoupled Design

Design No.3 is discarded due

to cost constraint

Final Design-> No.2

Design No.1 Design No.2


Conclusions

(1) TRIZ modules can be exploited for the decoupling process of coupled designs.

(2) A flow chart is defined to use design axioms and TRIZ modules.

(3) The coupled manner is classified into six patterns according to design equations and characteristics. In addition, TRIZ modules applicable to each pattern are identified.

(4) Practical examples are solved.

decoupling process of a coupled design using the triz … · axiomaticdesign triz 2 1 3 2 1 dp dp x...

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