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Supporting real-time distributed computer-controlled systems with multi-hop P-NET networks

Identifieur interne : 000330 ( Main/Exploration ); précédent : 000329; suivant : 000331

Supporting real-time distributed computer-controlled systems with multi-hop P-NET networks

Auteurs : Eduardo Tovar [Portugal] ; Francisco Vasques [Portugal] ; Alan Burns [Portugal, Royaume-Uni]

Source :

RBID : ISTEX:8F4184B00294E5BE76F851920FA1C8E9D681DBF4

Abstract

Fieldbus communication networks aim to interconnect sensors, actuators and controllers within process control applications. Therefore, they constitute the foundation upon which real-time distributed computer-controlled systems can be implemented. P-NET is a fieldbus communication standard, which uses a virtual token-passing medium-access-control mechanism. In this paper pre-run-time schedulability conditions for supporting real-time traffic with P-NET networks are established. Essentially, formulae to evaluate the upper bound of the end-to-end communication delay in P-NET messages are provided. Using this upper bound, a feasibility test is then provided to check the timing requirements for accessing remote process variables. This paper also shows how P-NET network segmentation can significantly reduce the end-to-end communication delays for messages with stringent timing requirements.


Url:
DOI: 10.1016/S0967-0661(99)00073-8


Affiliations:


Links toward previous steps (curation, corpus...)


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