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研究生: Nguyen Pham Kien Minh
Nguyen Pham Kien Minh
論文名稱: STUDY OF ITEM FETCH OPTIMIZATION AND SIMULATION IN KIVA LIKE WAREHOUSES
STUDY OF ITEM FETCH OPTIMIZATION AND SIMULATION IN KIVA LIKE WAREHOUSES
指導教授: 周碩彥
Shuo-Yan Chou
口試委員: 喻奉天
F.-Yu Vincent
郭伯勳
Po-Hsun Kuo
學位類別: 碩士
Master
系所名稱: 管理學院 - 工業管理系
Department of Industrial Management
論文出版年: 2017
畢業學年度: 105
語文別: 英文
論文頁數: 80
中文關鍵詞: Generalized Assignment ProblemHungarian MethodItem Fetch KIVA Like Warehouse System SimulationNetlogo SimulationWarehouse Design AnalysisTwo Lane Warehouse
外文關鍵詞: Generalized Assignment Problem, Hungarian Method, Item Fetch KIVA Like Warehouse System Simulation, Netlogo Simulation, Warehouse Design Analysis, Two Lane Warehouse
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  • This thesis focuses on dealing with the Tasks – Vehicles Assigning Problem in a two lane autonomous smart warehouse, which is a part in a three year project joining the Productivity 4.0 program hosted by Executive Yuan as well as the Taiwan Government, using autonomous guided vehicles (AGVs) as the main force for goods retrieval. The motivation of this thesis comes from the rapid risen and development in e – commerce as well as network flow, the foundation of Industry 4.0, and the Internet of Everything in the warehouse management field. Using the KIVA – Like robot used in the Amazon e – retailer, this thesis will solved a combinatorial problem by utilizing optimization method named Hungarian method, which recorded as one of the fastest resulting local optima results, for finding the best combinations among the tasks – vehicles ensuring that the tasks are fulfilled in ascendant order with minimum total time in retrieving goods. Another interest in this thesis is finding the relationships between the total number of vehicles and the warehouse’s parameters such as number of pods, number of total tasks and aisles length ensuring that deadlock conflictions are prohibited in a two – lane warehouse context. A simulated model also be proposed in this thesis, using MATLAB 2015a for optimizing the routing problem and NETLOGO 6.0 for simulating and visual interface on how the warehouse will function and also used for analyzing the warehouse systems’ performance.


    This thesis focuses on dealing with the Tasks – Vehicles Assigning Problem in a two lane autonomous smart warehouse, which is a part in a three year project joining the Productivity 4.0 program hosted by Executive Yuan as well as the Taiwan Government, using autonomous guided vehicles (AGVs) as the main force for goods retrieval. The motivation of this thesis comes from the rapid risen and development in e – commerce as well as network flow, the foundation of Industry 4.0, and the Internet of Everything in the warehouse management field. Using the KIVA – Like robot used in the Amazon e – retailer, this thesis will solved a combinatorial problem by utilizing optimization method named Hungarian method, which recorded as one of the fastest resulting local optima results, for finding the best combinations among the tasks – vehicles ensuring that the tasks are fulfilled in ascendant order with minimum total time in retrieving goods. Another interest in this thesis is finding the relationships between the total number of vehicles and the warehouse’s parameters such as number of pods, number of total tasks and aisles length ensuring that deadlock conflictions are prohibited in a two – lane warehouse context. A simulated model also be proposed in this thesis, using MATLAB 2015a for optimizing the routing problem and NETLOGO 6.0 for simulating and visual interface on how the warehouse will function and also used for analyzing the warehouse systems’ performance.

    Table of Contents Acknowledgement i Abstract ii Table of Contents iii List of Figures v List of Tables vii Chapter 1.Introduction 1 1.1 Background 1 1.2 Objective 9 1.3 Problem Limitation 9 1.4 Research Methodology 10 1.5 Organization of Thesis 10 Chapter 2.Literature Review 12 2.1 Automatic Guided Vehicle system (AGVs) 12 2.2 Amazon Kiva System 13 2.3 AGV collaborations 14 2.4 Conflict Tree Problem 16 2.5 The Cross Aisle and Warehouse Layout Design 19 2.6 Generalized Assignment Problem 20 2.7 Hungarian Method 22 Chapter 3.Problem Statement 27 3.1 Warehouse Vehicle Routing Introduction 27 3.1.1. Traditional Warehouse 27 3.1.2. Proposed Warehouse 28 3.1.3. Common Process 30 3.2 Characteristic of the Proposed Warehouse 31 3.2.1. Overall Warehouse 31 3.2.2. Order Picking Station 32 3.2.3. Tasks arrangement 33 3.2.4. Vehicles Good Retrieval Process 33 3.3 Problem Assumption and Identification 33 3.3.1. Problem Assumption 33 3.3.2. Problem Identification 34 3.4 Mathematical Model 35 Chapter 4.Simulation Flow Chart 39 4.1 Overall Simulation Flow Chart 39 4.2 Pseudo Code for the Problem 40 Chapter 5.Simulation Analysis 50 5.1 Input Assumption 50 5.2 Simulation Results Discussion 53 Answer for Question 1 : 53 Answer for Question 2 : 59 Chapter 6.Conclusions and Future Suggestions 62 References 64

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