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

• Tipo: Artigo em Revista Científica Internacional
• Data: 1999

Autores

tovar, e (Autor) Outra; vasques, f (Autor) FEUP; burns, a (Autor) Outra

Revista

Título: Control Engineering Practice

Vol. 7

Páginas: 1015-1025

ISSN: 0967-0661

Editora: Elsevier

Indexação

ISI Web of Knowledge - 21 Citações

ISI Web of Science

Scopus - 23 Citações

COMPENDEX

Outras Informações

ID Authenticus: P-001-3PS

DOI: 10.1016/s0967-0661(99)00073-8

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11