Journal
SIAM JOURNAL ON CONTROL AND OPTIMIZATION
Volume 52, Issue 2, Pages 1276-1298Publisher
SIAM PUBLICATIONS
DOI: 10.1137/130914942
Keywords
discrete event systems; networked systems; controllability; observability; supervisory control
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Funding
- U.S. National Science Foundation [ECS-0823865]
- National Natural Science Foundation of China [60904019, 61143006, 71071116]
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In this paper, we investigate supervisory control of networked discrete event systems. Such systems are now widely used in practice. The key feature of a networked discrete event system is communication delays and losses in observation and control. Without addressing communication delays and losses in networked systems, no control will be effective. We propose to use some special observation mappings to deal with observation delays and losses. Based on these mappings, we define network observability. We also consider control delays and losses in networked discrete event systems and define network controllability. We show that these definitions capture precisely the requirements on effective supervisory control in networked discrete event systems in the sense that a networked supervisor exists if and only if both network controllability and network observability are satisfied.
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