1. A Virtual Customer Needs System for
Product Development
Authors
Md Mamunur Rashid, Jun'ich Tamaki, Sharif Ullah, and Akihiko
Kubo
Kitami Institute of Technology, Hokkaido, Japan
2010年度精密工学会北海道支部学術講演会 1 北海道工業大学平成22年9月4日
3. Introduction: Product Development Process
Product Development Product Simulation System for
Cycle Development Team Virtual Customer Needs
Strategic Goal
Customer Needs
Assessment
Questionnaires
Conceptualization
Product Realization
Satisfaction Real
Customers
2010年度精密工学会北海道支部学術講演会 3 北海道工業大学平成22年9月4日
5. Introduction
VOC analysis using the Technical Solutions Methods/Tools
method described in the QFD, TRIZ, Simulation, CAD/CAM/CAE,
paper …
Requirement Analysis Tools:
Quality Requirement Definition (Hari et al. 2007)
Logical Requirement Analysis (Mannion and Kaindle 2008)
…
2010年度精密工学会北海道支部学術講演会 5 北海道工業大学平成22年9月4日
6. Kano Model
Classification of Customer Needs
High satisfaction (Delighted)
Attractive (A)
One-dimensional (O)
Indifferent (I)
Performance fully absent Performance fully present
(Dysfunctional) (Functional)
Must be (M)
Reverse (R)
Low satisfaction (Disgusted)
2010年度精密工学会北海道支部学術講演会 6 北海道工業大学平成22年9月4日
7. Kano Model
Question: 1 Question: 2
Functiona l Answer: Dysfunctiona l Answer:
Functiona l Answer: Dysfunctiona l Answer: Like Like
Like Like Must-be Must-be
Must-be Must-be Neutra l Neutra l
Neutra l Neutra l Live-with Live-with
Live-with Live-with Dislike Dislike
Dislike Dislike
(Dislike, Like) Reverse
(Must-be, Dislike) Must-be
Functional Dysfunctional Answers (Y)
Answers
(X) ( ) Like Must-be Neutral Live-with Dislike
Like Q A A A O
Must-be R I I I M
Neutral R I I I M
Live-with R I I I M
Dislike R R R R Q
2010年度精密工学会北海道支部学術講演会 7 北海道工業大学平成22年9月4日
8. Proposed System
Product Development Product Simulation System for
Cycle Development Team Virtual Customer Needs
Strategic Goal
Customer Needs
Assessment
Questionnaires
Conceptualization
Product Realization
Satisfaction Real
Customers
2010年度精密工学会北海道支部学術講演会 8 北海道工業大学平成22年9月4日
9. Proposed System
The generic discrete event simulation technique :
Input :
E E 1 , , E n //event vector
P Pr E 1 , , Pr E n //probability vector
N //number of iterations
Calculate:
For i 1, , n
CPr E i Pr E 1 Pr E i // cumulativeprobability
End For
Simulate :
For k 1, , N
generate rk //rk is a random number in the interval 0,1
If rk 0,CPr E 1 Then S k E1
Else
For i 2, , n 1
If rk CPr E i 1 , CPr E i Then S k Ei
End For
If rk CPr E n 1 , CPr E n Then Sk En
End For
Output :
S S 1 , ,S k , ,S N //simulated event vector
2010年度精密工学会北海道支部学術講演会 9 北海道工業大学平成22年9月4日
11. Results
1 1
0.8 0.8
0.6 0.6
Pr(.)
Pr(.)
0.4 0.4
0.2 0.2
0 0
Evaluations Evaluations
Worst Possible Probability for attractive Best Possible Probability for attractive
2010年度精密工学会北海道支部学術講演会 11 北海道工業大学平成22年9月4日
14. Results
Using this system a product development
team can identify beforehand how many
customers that should ask to determine
whether or not a product attribute is
Attractive, Must-be, One-dimensional,
Indifferent, or Reverse.
2010年度精密工学会北海道支部学術講演会 14 北海道工業大学平成22年9月4日
15. Future Work
1. The simulation method can be developed
to know the unknown answer, when the
demographic and psychographic factors
of the respondents of known and
unknown answers are similar.
2. A system can to simulate the functional
and dysfunctional answers for a given
Kano evaluation.
3. A combination of the known answer and
random selection can be used to develop
a computer system.
2010年度精密工学会北海道支部学術講演会 15 北海道工業大学平成22年9月4日
16. Concluding Remarks
1.Customer requirements are an important
component of product development.
2.The customer expectations to the technical
requirements of products are also necessary
for product development.
2010年度精密工学会北海道支部学術講演会 16 北海道工業大学平成22年9月4日