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Séminaire du département Automatique du 24/05/2016 à 10h30


Analysis and design of networked control systems

Intervenant : Dragan Nesic, The University of Melbourne, Australia

Lieu : B208


Résumé :

Networked control systems (NCS) are increasingly used in transportation, manufacturing, process industries, power systems, infrastructure, and so on. Their unique feature is that a digital communication network (wired or wireless) is used to transmit signals between the plant and the controller. Advantages of this technology are the reduced cost of the system, easier installation and maintenance, reduced weight and volume, and so on. Unfortunately, due to the presence of the network in the system, the analysis and design of NCS is much harder than for their classical counterparts. This is due to the fact that the network imposes communication constraints and undesirable effects, such as data dropouts, time delays, quantization, varying transmission times, signal scheduling, and so on.


A typical approach in the research literature has been to identify a single network induced issue and develop the required theory for it. An overview some of our results that pursue this approach will be given by concentrating on time varying sampling and signal scheduling via protocols. Then, it will be highlighted that the same approach can be modified to deal with time delays and quantization. These results allowed us to develop techniques that concentrate on a particular issue (e.g. data scheduling) rather than a specific physical network and, hence, they often need to be adapted to specific networks. I will present some of our recent work that involves higher fidelity modelling of Flexray network and the corresponding design framework.

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