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162 Chapter Five
Uncontrollable Inputs Noises
Environment Coupling Deterioration
Signal (M 1 )
Signal (M 2 ) Level #1 Hierarchy
…
Transfer Functions Level #1 DP 1 DP 2
0 • 0 Controllable Inputs
FR 1 A 11 DP 1
• A 21 A 22
• •
• = • Uncontrollable Inputs Noises
• 0 •
Environment Coupling Deterioration
FR m A m1 • A m(p – 1) A mm DP p
Signal (M 1 )
Signal (M 2 ) Level #1 Hierarchy
Physical Mapping: Map FRs to …
Design Parameters (DPs)
Functional DP 1 DP 2
Domain Physical Controllable Inputs
Domain
FR Axiomatic Design Zigzagging Method •
DP
FR 1 FR 2 •
DP 1 DP 2 •
FR 1.1 FR 1.2
DP 1.1 DP 1.2 Uncontrollable Inputs Noises
Environment Coupling Deterioration
Transfer Functions Level #k
FR 1,k A 11,k 0 • 0 DP 1,k
• A 21,k A 22,k • •
= Signal (M 1 )
• • • 0 • Signal (M 2 )
FR m,k A m1,k • A m(p – 1) ,k A mm DP p,k Level #1 Hierarchy
…
DP 1 DP 2
Controllable Inputs
Figure 5.16 The relationship between the physical structures, transfer function array,
and DFMEA.
