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This paper discusses some attributes concern with the components of siphons, and defines one type of resources with special location in a class of Flexible Manufacturing Systems (FMS) Petri nets models N named S3PR. It is proved that neither these resources would be contained in each arbitrary Strict Minimal Siphon (SMS) or elementary siphon of S3PR, nor those operation places that use these resources...
Based on Petri net models, this paper concerns the resources which have no connection with the occurrence of system deadlock in automated manufacturing systems. First, the resources concerned are formally defined as the Location-Special resources, because of their special locations. Second, it is proved that these resources have nothing to do with the structural characters, which are called perfect...
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