Analysis and Design of Real-Time Servers for Control Applications
2016 (English)In: I.E.E.E. transactions on computers (Print), ISSN 0018-9340, E-ISSN 1557-9956, Vol. 65, no 3, 834-846 p.Article in journal (Refereed) PublishedText
Today, a considerable portion of embedded systems, e.g., automotive and avionic, comprise several control applications. Guaranteeing the stability of these control applications in embedded systems, or cyber-physical systems, is perhaps the most fundamental requirement while implementing such applications. This is different from the classical hard real-time systems where often the acceptance criterion is meeting the deadline. In other words, in the case of control applications, guaranteeing stability is considered to be a main design goal, which is linked to the amount of delay and jitter a control application can tolerate before instability. This advocates the need for new design and analysis techniques for embedded real-time systems running control applications. In this paper, the analysis and design of such systems considering a server-based resource reservation mechanism are addressed. The benefits of employing servers are manifold: providing a compositional and scalable framework, protection against other tasks misbehaviors, and systematic bandwidth assignment and co-design. We propose a methodology for designing bandwidth-optimal servers to stabilize control tasks. The pessimism involved in the proposed methodology is both discussed theoretically and evaluated experimentally.
Place, publisher, year, edition, pages
IEEE COMPUTER SOC , 2016. Vol. 65, no 3, 834-846 p.
Embedded systems; real-time systems; real-time control co-design; control server; stability; bandwidth minimization
IdentifiersURN: urn:nbn:se:liu:diva-126249DOI: 10.1109/TC.2015.2435789ISI: 000370729600014OAI: oai:DiVA.org:liu-126249DiVA: diva2:913451
Funding Agencies|ELLIIT Excellence Center; Linneaus Center LCCC; Marie Curie Intra European Fellowship within Seventh European Community Framework Programme; Swedish Research Council2016-03-212016-03-212016-06-08