A Collaboration-based System for Quantitatively Analyzing Change Impact in Variant Product Design

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研究生：	周朝乎 Chao-Hu Zhou
論文名稱：	A Collaboration-based System for Quantitatively Analyzing Change Impact in Variant Product Design
指導教授：	陳仲儼 Chung-Yang Chen
口試委員:
學位類別：	碩士 Master
系所名稱：	管理學院 - 資訊管理學系 Department of Information Management
畢業學年度：	99
語文別：	英文
論文頁數：	71
中文關鍵詞：	產品設計變更、變更影響分析、工程變更、變更傳遞
外文關鍵詞：	change propagation, engineering change, change impact analysis, product design change
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在差異化產品設計中，發生變更是很可觀的。當變更發生時，所有相關項目必定會受到影響。因此，受變更的影響需要及時處理以維護產品的一致性與完整性。為了分析產品設計變更的潛在影響，本研究介紹了一個命名為影響因子 (Impact factor)的量化值，且提出了一個通過對此量化值來分析變更影響的演算法。再者，為了考量變更傳遞存有遞迴式循環的特性，此方法是建立在先透過樹狀結構的概念來確定影響的範圍，本研究稱其展開樹為影響樹 (Impact tree)。然後，再利用影響程度來估算影響範圍的變更預期成本。我們並據以開發出一個基於協同合作的系統，用以展現本研究提出的方法。最後，本研究會透過一個實例，驗證系統的可行性。

Change is substantial in variant product design. When changes occur, all the related parts must be affected. Thus, the impacts of changes need to be promptly realized in order to maintain the consistency and integrity of the product. For the purpose of handling potential effects of product design change, this research proposes an algorithm for analyzing change impact through a quantitative indicator in termed impact factor in our research. The concept of this approach is established on determining the scope of changes through tree structure known as impact tree in this study and then estimating the expected cost of change via degree of influence in consideration of change propagation and recursive looping. A collaboration-based system is implemented to realize the proposed approach and algorithm. Lastly, the feasibility of the system is verified through an experiment.

摘要	       i
Abstract	       ii
Acknowledgement	       iii
Table of Contents	       iv
List of Figures	       vi
List of Tables	       viii
Chapter I Introduction	       1
1 Background	       1
2 Motivation	       2
3 Problem Statements	       3
4 Research Objectives	       4
Chapter II Literature Survey	       6
1 Engineering Change Management	       6
2 Methods of handling product change management	       7
2.1 Design Structure Matrix	       7
2.2 Quality Function Deployment	       9
3 Literature reviews on cost analysis	       10
3.1 Design to Cost	       10
4 Review of model framework	       11
4.1 Using attributes for characterizing product items	       11
4.2 Defining product configuration items	       12
4.3 Describing Change propagation processes in model framework	       12
Chapter III Research Approach	       14
1 Process Architecture	       14
2 Terminology Definition	       15
3 Architecture Design	       17
3.1 Transforming product model to impact tree	       17
3.2 Quantifying the impact factor	       19
3.3 Assessing the degree of influence	       20
3.4 Evaluating the cost impact	       21
3.5 Estimating the expected cost of change	       21
3.6 Re-evaluating	       22
3.7 Implementing the processes of proposed approach	       23
Chapter IV System Implementation	       25
1 System architecture	       25
2 System function	       26
2.1 Model Builder mode	       27
2.2 Impact Identifier mode	       31
Chapter V Experiment	       36
1 Constructing the Product Model of the Smartphone	       37
2 Applying Changes on Smartphone	       38
2.1 Applying single change	       38
2.2 Applying multiple changes	       41
Chapter VI Empirical Result and Discussion	       45
1 General comparisons	       45
2 Empirical result	       46
2.1 Comparison of expected cost of change	       46
2.2 Comparison of time-cost	       47
3 Discussion	       49
3.1 Issues learned from the empirical study	       49
3.2 Limitations	       51
Chapter VII Conclusion and future work	       52
References	       54
Appendix A	       58
Appendix B	       59

                                

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