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Table 1 The house of quality of a motor car

From: Determination of Target Values of Engineering Characteristics in QFD Using Uncertain Programming

  

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Engineering characteristics

EC1

EC2

EC3

EC4

EC5

  

x 1

x 2

x 3

x 4

x 5

 

EC1

x 6 (α 1/6)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

 

EC2

x 1/9 (α 9)

x 6 (α 1/6)

x 2 (α 1/2)

x 1/9 (α 9)

x 1/9 (α 9)

Uncertain correlation matrix

EC3

x 1/9 (α 9)

x 2 (α 1/2)

x 6 (α 1/6)

x 4 (α 1/4)

x 1/9 (α 9)

 

EC4

x 1/9 (α 9)

x 1/9 (α 9)

x 4 (α 1/4)

x 6 (α 1/6)

x 1/9 (α 9)

 

EC5

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 6 (α 1/6)

Customer

Uncertain weighs of

Uncertain relationship matrix between customer requirements and engineering characteristics

requirements

customer requirements

     

CR1 \(\mathcal {Y}_{1}\)

x 4 (α 1/4)

x 6 (α 1/6)

x 1/9 (α 9)

x 2 (α 1/2)

x 1/9 (α 9)

x 1/9 (α 9)

CR2 \(\mathcal {Y}_{2}\)

x 2 (α 1/2)

x 1/9 (α 9)

x 4 (α 1/4)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

CR3 \(\mathcal {Y}_{3}\)

x 2 (α 1/2)

x 1/9 (α 9)

x 1/9 (α 9)

x 6 (α 1/6)

x 1/9 (α 9)

x 1/9 (α 9)

CR4 \(\mathcal {Y}_{4}\)

x 6 (α 1/6)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 6 (α 1/6)

x 1/9 (α 9)

CR5 \(\mathcal {Y}_{5}\)

x 1/4 (α 4)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 1/9 (α 9)

x 4 (α 1/4)

 

Units

dB

Horsepower

Gallon

Kg

M3

 

Comp1

80

75

0.042

23

0.18

 

Comp2

65

70

0.034

24

0.20

 

Comp3

65

80

0.028

23

0.18

Technical measures

Comp4

75

60

0.032

15

0.14

 

Comp5

95

80

0.030

20

0.19

 

Min

60

60

0.027

15

0.14

 

Max

95

90

0.042

25

0.21

 

Cost coefficients

\(\mathcal {L}(8,12)\)

\(\mathcal {L}(9,12)\)

\(\mathcal {L}(24,26)\)

\(\mathcal {L}(14,16)\)

\(\mathcal {L}(7,10)\)