whytaguchimethodtip1 (1).ppt

8/19/2019 WhyTaguchiMethodTip1 (1).ppt

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Why/When is Taguchi Method Appropriate?

Tip #1Tip #1Taguchi’s Signal-to-Noise Ratios are in Log formTaguchi’s Signal-to-Noise Ratios are in Log form

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Taguchi’s Signal-to-Noise Ratios are in Log formTaguchi’s Signal-to-Noise Ratios are in Log form

arlier Tiparlier Tip

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Taguchi’s Signal-to-Noise Ratios are in Log form

$ %ery important reason%ery important reason

& Ta'ing (logarithm) impro%es *additi%ity’+ hy$ .ost functions in *nature’ follo/ the po/er-la/s$ 0 e2p 3-a4'T5 378NNT9L5$ 0 : 2 + + + + 3 a & R9S; & 78R 5$ 0 : a + + + + 3 & R9S; & 78R a5

& 8n ta'ing logarithm

these


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Taguchi’s Signal-to-Noise Ratios are in Log form

$ Let us say /e are trying reduce *defects’ in a process using L> array$ The prediction /ill

& ? defects =-> -! to 1? defects 3-! is pro


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More Tips More Tips Lins !elo" Lins !elo"16. Taguchi Method

1st Priority : BBaar r iiaannccee R R eedduuccttiioonn 2nd Priority : Factor ffectsFactor ffects

15. “inner”“inner” L array !ith“outer”“outer” L" and L #o$s% arrays

1". Taguchi Method

““inner”inner” L1& array !ith“outer”“outer” L" and L #o$s% arrays

1'. Taguchi Method

Why/When is Taguchi Method notnot Appropriate?

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Tips #$% ##% #&Tips #$% ##% #&

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““inner”inner” L& array !ith

“outer”“outer” L" and L #o$s% arrays

11. Taguchi Method

(sefu at LL Life-stagesLL Life-stages of a Process or

Product

10. Taguchi MethodPerfor*s Process (centering)(centering) or (fine tuning)(fine tuning)

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Tips '% (% )Tips '% (% )

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More Tips More Tips Lins !elo" Lins !elo". Taguchi Method

Identifies the “right” N Noo99ss factor(s) for Tolerance DesignTolerance Design

10. Taguchi Method

Finds best settings to optimize

TWO qalit! characteristics "imltaneosl!

+. Taguchi MethodWhen to select a #$arger% O& to perform

“Factorial 'periments”

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Tips *% +% ,Tips *% +% ,

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Using Orthogonal Arrays for Generating

Balanced Combinations of NoIsE Factors

5. Taguchi Method Signal-to-Noise Ratio for !ality

Characteristics

approaching IDEAL valueapproaching IDEAL value

". Taguchi Method im"ro#es $ %!ality & at all the life stages

at the design stage itself the design stage itself

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Tips % $% #Tips % $% #

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More Tips More Tips Lins !elo" Lins !elo"'. Taguchi Method

,--ro-riate for Goncurrent ngineeringGoncurrent ngineering

2. Taguchi Method can study $nteraction

et!een #oise /actors#oise /actors and ontroontro

/actors/actors

1. Taguchis Signal-to-Noise RatiosSignal-to-Noise Ratios are in

Log formLog form

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whytaguchimethodtip1 (1).ppt

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