year 1998 
author Jungwoon Yoo 
Keyword A study on an efficient real-time deadlock-free control algorithm by using graph-theoretic approach 
Abstract In line with the rapid development of computer and automation technologies, most of today´s manufacturing systems have volved toward automated systems because they have the potential for providing a high level of performance, i.e. high roductivity, reduction of lead time, high adaptability in continuously changing demands. One of the most popular and promising automated systems is the so-called Flexible manufacturing systems(FMSs). FMSs aim to achieve flexibility with respect to physical structure and logical structure. As such FMSs induce interests of many researchers to study better methods for the design, operation, and performance evaluation of FMSs. Among these various research areas in FMS, one area that has often been overlooked is related to a deadlock problem. More recently, the deadlock issues receive considerable attention in the real-time control realm of automated manufacturing system. An FMS deadlock refers to a situation where two or more parts that have finished current processing each wait for the next machine occupied by other part so that further part flow is inhibited. When an FMS enters deadlock, the whole system can cease to operatae in spite of no apparent machine failure. Deadlock makes part of the system inoperable and gradually expands to the whole system and at last may result in permanent blocking state. As a result, the system utilization and the productivity of the system are decreased. Deadlock-free operation, therefore, is a principle requirement of FMS control. Many researchers studied on an deadlock by using various modelling techniques, especially Petri-net. Modelling an FMS is a time-consuming task in itself. To make the matters worse, whenever a small change in a physical layout(structure) and/or a logical structure occurs, it takes too much time to revise the model. The revision of the model causes the whole changes of the existing model. As the market changes into multi-product small-production environment, an FMS has many physical and logical changes. That´s why such In this paper, we apply a simple and easily adaptable deadlock avoidance algorithm to a middle-sized FMS. This algorithm uses a graph-theoretic approach. It is proposed by Kim(1997). Unlike Petri-net based methods which are complex and static, it is easy to modify the existing model as the system configuration is changed. Most papers on an deadlock dealt with a very small system as an object of research( i.e. 2 machines and 1 AVG or Robot ). Therefore, even though they included an AGV into their system, they had only to focus on the part flow deadlock problem without considering it. On the other hand, the FMS, the object of our research, is equipped with # machines and # AGVs and # robots. We take both the AGV deadlock problem and the part flow deadlock problem into considerations. The core of this paper consists of two parts : AGV deadlock avoidance algorithm by using graph-theoretic approach and the integration of part flow deadlock avoidance and AGV deadlock avoidance. ( if possible tool deadlock avoidance ) In particular, the integration of part flow deadlock avoidance and AGV deadlock avoidance is of importance in this paper. Until now, some researches have been focused on the part flow deadlock avoidance and others on the AGV deadlock avoidance. Few papers dealt with both the AGV deadlock and the part flow deadlock. In this paper, we propose the augmented graph-theoretic approach which can resolve two kinds of deadlock at the same method and in one model. We apply this new approach to virtual manufacturing system we design. Throughout this paper, we propose a new deadlock avoidance method which can integrate the part flow deadlock avoidance and the AGV deadlock avoidance. This deadlock avoidance algorithm can be easily modified whenever the structures will be changed. Therefore, it is fit for FMS, because FMS has much opportunity for changing its structure. Moreover, as it is very simple, it is appropriate for real-time control mechanism. 
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번호 c year 제목 author
61 MS  1993  A Study on Effects of Order Release Policies to Performance of Manufacturing Systems Choonghwan Ahn 
60 MS  1993  A Study on the FMS Shop Floor Control by Bidding among Autonomous Objects Jangsuk Moon 
59 MS  1993  A Supervisory Control Approach to Rapid Implementation of Low-Level Control Software for FMC [1] Sangkyun Kim 
58 MS  1994  A Finitely Recursive Processes Approach to Modeling and Control of an FMC Jaeheuk Choi 
57 MS  1996  A Study on the Generation and DB Construction of Modular BOM [1] Yonggu Ji 
56 MS  1997  A Scheduling Algorithm Considering Subcontractor and Machine Setup Cost in MRP Environment [1] Kichang Lee 
55 MS  1997  A Study on FMS Scheduling Problems Based on Priority Functions Generated by Genetic Programming ChangUk Kim 
54 MS  1997  A New Approach to Master Production Scheduling in the MRP environment [1] Sangdo Choi 
» MS  1998  A study on an efficient real-time deadlock-free control algorithm by using graph-theoretic approach [27] Jungwoon Yoo 
52 MS  1998  A Study on UML representation of CIM-OSA and availability of analysis and design pattern in CIM-OSA [1] Seungoh Han 
51 MS  1998  Design of Integrated BOM Management System supporting Multiple Views Keumseok Kang 
50 MS  1999  An Evaluation of Workload Limited Order Release Strategies considering Planning Stage in a Jop Shop Byeongdae Choi 
49 MS  1999  A Study on the Development of Event-driven MRP Components Considering Capacity Constraints [1] Seunghyun Yoon 
48 MS  1999  A Study on the Implementation of the Speech Recognition System for the Real-Time Decision Support of Manufacturing Cells [18] Eoksu Sim 
47 MS  2000  A Study on Work Measurement Using Image Processing [8]
46 MS  2000  Design of a Hybrid System in Integrating Kanban with MRP [2] Taeyoung Song 
45 MS  2000  Job Shop Scheduling for Minimizing the Sum of Earliness and Tardiness Dongsu Park 
44 MS  2000  A Study on Integrated Production Planning of Distributed Manufacturing Systems on Supply Chain Dosung Go 
43 MS  2001  A Study of Decision Support for the implementation of Cellular Manufacturing Systems. [1] Muynghee Byun 
42 MS  2001  A Study on Components Development for Production Management Daiki Min 
41 MS  2002  Design and Implementation of Model Management System for Supply Chain Planning [1] Youngcheol Yang 
40 MS  2002  A combined DEA and BSC methodology for evaluating organization efficiency [1] Bumsoo Kim 
39 MS  2003  Design of a BOF Blowing Control Model Using Artificail Intelligence Jungjoon Park 
38 MS  2003  Production Planning and Distribution Planning using Demand based mixed Genetic Algorithm in a Supply Chain Jung Im 
37 MS  2004  A Study on Extended Workflow Model Considering Activity Based Costing [27] Moontae Hwang 
36 MS  2004  A Study on Reverse Supply Chain of End of Life Vehicle for the Enhanced Recycle Performance [6] Miyeon Ryu 
35 MS  2004  A Study on business process model for extended and integrated supply chain planning : Focused on negotiation [5] Yuncheol Kang 
34 MS  2004  A Design on Cost-Estimation Support System for Injection Mold Using AI Method [12] Gunhee Kim 
33 MS  2004  A study on due-date assignment method in wafer fabrication facility producing multiple product types [3] Jaewon Park 
32 MS  2005  A Study on RFID application in Reverse Supply Chain [3] Dongjoon Lim 
31 MS  2005  Development of Reference Model and Strategic Road Map for the Implementation of a Reverse Supply Chain [183] Chihoon Lim 
30 MS  2005  A Study on Developing of Position collecting Vision system Using Marker [1] Jiyoon Park 
29 MS  2005  A Study on Product Development Methodology in Reverse Supply Chain [77] Joon Kim 
28 MS  2006  A Study on the Application of Group Technology for Naval Ship Design And Manufacturing: Relating to Platform Family Architecture [17] Gwangjae Park 
27 MS  2006  A Framework for the ubiquitous MES using RFID and Web services Technology [25] Manchul Han 
26 MS  2006  A Study on the Assessment Method of Installation and Operation Cost in a Reverse Supply Chain [2] file Hyunjong Jeong 
25 MS  2007  A Study on the Valuation of a Supply Chain Considering Management Efficiency and Environmental Effect [53] Jiyoun Kim 
24 MS  2008  An Study abou the Application and Effect of RFID Technology in the Activity Collecting Information to Improvement of Manufacturing Process [10] Sungho Jo 
23 MS  2009  A Fuzzy-AHP based Decision making Model for ground operations [37] Youngkyun Lee 
22 MS  2009  A Study on Integrated Risk Management in Supply Chain - Focusing on High-tech Electronic Industry [52] file Kanghyun Kim 
21 MS  2009  A Study on Mine Artillery Hit Using Simulation [3] Youngho Chung 
20 MS  2009  A Study on the Economic Feasibility of Automated Identification Technology on the ELV Management Process [25] file Kiheon Nam 
19 MS  2007  A Study on Project Risk Management based on Earned Value Management [25] file Hyunil Noh 
18 MS  2007  A Study on BOM for Enhancing Efficiency of Reverse Supply Chain [14] Jinseon Yoo 
17 MS  2007  A Study on Utility Value and Fairness of Information Sharing in Supply Chain [18] file Myongran Oh 
16 MS  2007  A Simulation Study on the Impact of RFID Technology on the Supply Chain Counting Process [13] file Jangwon Cho 
15 MS  2008  A study on supplier's performance measurements for a supply chain on a new product environment [1] Jungsub Lee 
14 MS  2008  Integration of RFID and Web Service Technology in Manufacturing Systems [20] file Gunnam Ong 
13 MS  2011  A Study on RMC Scheduling using Simulation [19] Jeongho Park 
12 MS  2011  Intelligent service during middle-of-life phase of a product: Illustration of framework and its evaluation model [3] Soyeon Yoon