Browsing by Keyword "Cyber-Physical Systems (CPS)"
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Item Distribution middleware technologies for Cyber Physical Systems(2012) Calvo, Isidro; Etxeberria-Agiriano, Ismael; Noguero, Adrian; Tecnalia Research & InnovationCyber-Physical Systems (CPS) are integrations of computation and physical processes. This kind of systems is being increasingly used in different domains such as healthcare, transportation, process control, manufacturing or electric power grids. CPS interact with the physical world and must operate dependably, safely, securely, efficiently and, frequently, in real-time. Consequently, they require new computing and networking technologies capable of supporting them adequately in environments qualitatively different from those found in general purpose computing. This paper analyzes the applicability of different middleware technologies as data distribution means for CPS.Item A model for system resources in flexible time-triggered middleware architectures(2012) Noguero, Adrian; Calvo, Isidro; Almeida, Luis; Gangoiti, Unai; Tecnalia Research & InnovationMiddleware has become a key element in the development of distributed Cyber Physical Systems (CPS). Such systems often have strict non-functional requirements, and designers need a means to predict and manage non-functional properties. In this work, the authors present a mathematical model for the most relevant resources managed by FTT middleware architectures; namely, (1) processor, (2) memory, (3) energy and (4) network. This model can be used both off-line for simulation and designing purposes of a Cyber Physical System (CPS), or in run-time within an admission test or inside the algorithm of a specific scheduling policy executed by the middleware. In such case, the admission test is aimed at predicting whether a system fulfils the non-functional requirements or not before carrying out any modification in its execution plan at run-time.