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研究生:鄭朝宗
研究生(外文):Chao-Tsung Cheng
論文名稱:品質機能展開與設計結構矩陣於新產品規劃之應用
論文名稱(外文):Applying Quality Function Deployment and Design Structure Matrix to Product Planning
指導教授:高信培高信培引用關係
指導教授(外文):Hsing-Pei Kao
學位類別:碩士
校院名稱:國立中央大學
系所名稱:企業管理學系碩士在職專班
學門:商業及管理學門
學類:企業管理學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:英文
論文頁數:73
中文關鍵詞:ScheduleQuality Function DeploymentDesign Structure MatrixVoice of CustomerOverlapping ActivitiesRescheduleRework ProbabilityProduct Planning
外文關鍵詞:Overlapping ActivitiesScheduleRescheduleDesign Structure MatrixQuality Function DeploymentVoice of CustomerRework ProbabilityProduct Planning
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Product planning decisions largely determine the success or failure of a new product development. To achieve organization targets, product managers must set clear product specifications and realistic schedule. In order to avoid design a product that includes every desirable characteristic for everyone, just focused on customers what they need. Product managers must both understand customer requirements and also select the optimal set of features to meet those needs. At the same time, they must control product complexity in order to achieve reasonable development schedules and create a product that can be supported after the sale.
Product development project delay issue is universal among the companies. Thereupon, this paper focuses on design iterations, which are inherent in product development process. It aggravates the uncertain of product development duration, but often unaddressed. Its impact is mediated by the architecture of a process, i.e., its constituent activities and their interaction.
This paper adopts quality function deployment (QFD) methodology gradual deploy customer requirements and other popular methods to output product specifications. After that, based on design structure matrix, a rework probability assessment method for design activity is proposed in order to schedule a project. A cycle time reduction method what we proposed that beyond the common recommendation to simply overlap activities as much as possible. The framework yields and reinforces several managerial insights, including: how a customer requirement converts to product specifications, how to generate a realistic schedule, how to reschedule and account for corresponding iterative and overlapped activities. An industrial application for an AC motor drive is demonstrated to illustrate the proposed framework.
Product planning decisions largely determine the success or failure of a new product development. To achieve organization targets, product managers must set clear product specifications and realistic schedule. In order to avoid design a product that includes every desirable characteristic for everyone, just focused on customers what they need. Product managers must both understand customer requirements and also select the optimal set of features to meet those needs. At the same time, they must control product complexity in order to achieve reasonable development schedules and create a product that can be supported after the sale.
Product development project delay issue is universal among the companies. Thereupon, this paper focuses on design iterations, which are inherent in product development process. It aggravates the uncertain of product development duration, but often unaddressed. Its impact is mediated by the architecture of a process, i.e., its constituent activities and their interaction.
This paper adopts quality function deployment (QFD) methodology gradual deploy customer requirements and other popular methods to output product specifications. After that, based on design structure matrix, a rework probability assessment method for design activity is proposed in order to schedule a project. A cycle time reduction method what we proposed that beyond the common recommendation to simply overlap activities as much as possible. The framework yields and reinforces several managerial insights, including: how a customer requirement converts to product specifications, how to generate a realistic schedule, how to reschedule and account for corresponding iterative and overlapped activities. An industrial application for an AC motor drive is demonstrated to illustrate the proposed framework.
TABLE OF CONTENTS

ABSTRACT…………………………………………………………………………i

ACKNOWNLEDGE……………………..……………………….…………..……ii

TBALE OF CONTENTS………….…….…………………………………………iii

LIST OF TABLES…………………………………………………………………v

LIST OF FIGURES………………………………………………………………vi

CHAPTER 1 INTRODUCTION…………………………………………..……….1
1.1 Background ……………………………………………………………….1
1.2 Motivation…………………………………...…………………………….2
1.3 Research Objective……………………………………………….……….3
1.4 Scope of the Research…………………………………………………..…4
1.5 Thesis Organization……………………………………………………….5

CHAPTER 2 LITERATURE REVIEW……………………………………..……..6
2.1 Quality Function Deployment……………………………………….…….6
2.2 Design Structure Matrix………………………………………………….10
2.2.1 Component-Based Design Structure Matrix………………….……14
2.2.2 Task-Based Design Structure Matrix…………………………..…..16

CHAPTER 3 THE FRAMEWORK CONSTRUCTION……………………..........…….19
3.1 Customer-Driven Product Specifications……………………….………..20
3.1.1 Convert Voice of Customer into Product Characteristics…………..21
3.1.2 Convert Product Characteristics into Part Characteristics………....21
3.2 Plan a Schedule………………………………………..…………………22
3.2.1 Link Part Characteristics to DSMs………………………..……….23
3.2.2 Estimate the Cycle Time with Iterative Activities……..…………..24
3.2.3 Reduce the Cycle Time…………………………………………….27

CHAPTER 4 IMPLEMENTATION OF THE FRAMEWORK………….……….31
4.1 Establish a Customer-Driven Product Specification…………………..…31
4.2 Output the Part Characteristics……………..…………………………….33
4.3 Assess and Reduce Product Development Cycle Time…………………..36
4.3.1 Link QFD’s Output to DSMs………………………………..……..36
4.3.2 Assessing Design Cycle Time without Iteration……………...……38
4.3.3 Assessing Design Cycle Time with Iteration……………………….39
4.3.4 Reduce Design Cycle Time via Overlapped Activities……….……41

CHAPTER 5 INDUSTRIAL APPLICATION: LOW POWER ‘MICRO’ AC MOTOR DRIVE……………………………………………………….………….44
5.1 Case description………………………………….………………………44
5.1.1 Low Power ‘Micro’ AC Motor Drives………..……………………45
5.2 Demonstration………………………………………………………..…..46
5.2.1 The Voice of Customer Get from Market Survey………….….……46
5.2.2 The Application of Quality Function Deployment…………………47
5.2.3 The Application of Design Structure Matrices……………..………55
5.2.4 Assessing a Non-Iterative and Iterative Design Cycle Time…….…58
5.2.5 Reschedule by Overlap Method……………………………………61
5.3 Result Analysis……………………………………..…………………….65

CHAPTER 6 DISCUSSION AND CONCLUSION…………………..……….….67

REFERENCES…………………………………………………………………….69

LIST OF TABLES
Table 2.1 Simple Taxonomy of System Element Interaction…………..…………….15
Table 2.2 Example of a Spatial Interaction Quantification Scheme…………..15
Table 3.1 Levels of Information Variability …………………………..………….…25
Table 3.2 Levels of Task Sensitivity…………………………………..………….….25
Table 3.3 TV Values, Their Significance, and Proposed Strategies……………..26
Table 5.1 AC VFD Product Types Classified by Size………………..……………...45
Table 5.2 Relative Weighed Importance of User Requirements……...……………...46
Table 5.3 Affinity Diagram of Customer Requirements……………..……………...49
Table 5.4 Primary Customer Requirements…………………………..……………...50
Table 5.5 The Weighted Customer Requirements…………………..……………….50

LIST OF FIGURES
Figure 1.1 Thesis Organization…………………………………..………...……………5
Figure 2.1 Four-Phase Model of Quality Function Deployment…..………………….8
Figure 2.2 Three Possible Sequences for Two Design Tasks………..……………….10
Figure 2.3 Example Design Structure Matrix………………………..………………12
Figure 2.4 DSM Taxonomy…………………………………………..……………...13
Figure 3.1 Top-Level of Product Planning Framework………………..…………….19
Figure 3.2 Decomposed Sub-Function of Product Planning…...…………………….20
Figure 3.3 Decomposed Sub-Function of Convert the VOC……..………………….21
Figure 3.4 Decomposed Sub-Function of Scheduling Process……..………………..23
Figure 3.5 The Validation Process…………………………………..……………….27
Figure 3.6 Sequential and Overlapped Processes……………………..……………..28
Figure 3.7 The Framework of Product Planning………………………...…………...30
Figure 4.1 Systematic Matrix Calculations……………………………..……………33
Figure 4.2 The Five-Step Concept Generation Method…………………..………….34
Figure 4.3 Sample HOQ2 and Weighted the Design Activities by Teams………..…35
Figure 4.4 Sample Component-Based DSM with Activity Weights……………..….36
Figure 4.5 Sample clustered Component-Based DSM…………………………..…..37
Figure 4.6 Sample Task-based DSM……………………………………………..….38
Figure 4.7 Sample Gantt Chart…………………………………………………..…..39
Figure 4.8 Sample Numerical DSM with TV values…………………………..…….40
Figure 4.9 The Sequential Overlapped Activities……………………………..……..42
Figure 5.1 Affinity Diagram for Low Power ‘Micro’ AC Motor Drives…………..48
Figure 5.2 HOQ1……...……………………………………………………………...52
Figure 5.3 HOQ2……...……………………………………………………………...55
Figure 5.4 The Original DSM…………..……………………………………………56
Figure 5.5 Clustered Component-Based DSM by Design Teams…………..…….…57
Figure 5.6 Clustered Activity-based DSM…………………………………..……....58
Figure 5.7 Gantt Chart with Non-Iteration Activity………………………..……..…59
Figure 5.8 The Numerical DSM for Cycle Time…………………………..………...60
Figure 5.9 Gantt Chart with Iterative Activity………………………..………...61
Figure 5.10 The Numerical DSM for Cycle Time Assessment………….………….63
Figure 5.11 The Gantt Chart with Overlapped Activity………………….………….64
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