Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3531
Título: Supporting real-time distributed computer-controlled systems with multi-hop P-NET networks
Autor: Tovar, Eduardo
Vasques, Francisco
Burns, Alan
Palavras-chave: Distributed computer-controlled systems
P-NET fieldbus networks
Real-time communications
Message response time analysis
Data: 1999
Editora: Elsevier
Relatório da Série N.º: Control Engineering Practice; Vol. 7, Issue 8
Resumo: 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.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3531
ISSN: 0967-0661
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0967066199000738
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