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Author

Jung, Mooyoung
Ulsan National Institute of Science and Technology
Research Interests
  • Manufacturing Systems Engineering

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Petri-Net 을 이용한 FMS 제어 및 모니터링

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Title
Petri-Net 을 이용한 FMS 제어 및 모니터링
Other Titles
FMS Control and Monitoring using Petri Net
Author
Kim, GoJoongJung, MooyoungCho, Hyungbo
Keywords
FMS, Control and monitoring, Colored and timed Petri-Net
Issue Date
1995
Publisher
대한산업공학회
Citation
대한산업공학회지, v.21, no.1, pp.137 - 151
Abstract
A difficult problem in operating Flexible Manufacturing Systems (FMS) is to control the system in real-time by coordinating heterogeneous machines and integrating distributed information. The objective of the paper is to present the models and methodologies useful to resolve the difficult problem. The detailed objectives can be described in three folds. First, a hierarchical Colored and Timed Petri-Net (CTPN) is designed to control an FMS in real-time. The concerned FMS consists of a loading station, several machining cells, a material handling system, and an unloading station. Timed-transitions are used to represent the timed-events such as AGV movements between stations and cells, part machining activities in the cells. Signal places are also used to represent communication status between the host and the cell controllers. To resolve the event conflicts and scheduling problems, dispatching rules are introduced and applied. Second, an implementation methodology used to monitor and diagnose the errors occurring on the machines during system operation is proposed. Third, a Petri-Net simulator is developed to experiment with the designed control logic.
URI
http://scholarworks.unist.ac.kr/handle/201301/5836
ISSN
1225-0988
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