Séminaire d'Automatique du plateau de Saclay

Séminaire le 29 Novembre 2019, 10h00 à CentraleSupelec (Gif-sur-Yvette) Salle du conseil du L2S - B4.40
Elena Panteley & Ubirajara F. Moreno

10:00-11:00 Elena Panteley (Director of research, CNRS, L2S, CentraleSupélec)

Title: Dynamic consensus in heterogeneous networks

Abstract: In this talk we present an analysis framework for the study of synchronization of nonlinear systems interconnected over networks described by directed graphs.  Systems may have different dynamical models or the same model with different parameters.  We introduce the concept of dynamic consensus and we characterize the synchronization behavior of the network in terms of the stability properties of two interconnected dynamical systems that evolve in orthogonal spaces: one corresponds to the synchronization error dynamics and the second to the so-called emergent dynamics. Such an approach allows not only to formulate conditions for practical asymptotic synchronization of heterogeneous networked systems, but also to characterize their collective behavior.  In the end we present two extensions of the proposed approach to the analysis of networks of Stuart-Landau oscillators.

Biography. Elena Panteley was born in Leningrad, USSR. She received the M.Sc. and Ph.D. degrees in applied mathematics from the State University of St. Petersburg, St. Petersburg, Russia. She is a Director of Research (DR 2) of the French National Centre of Scientific Research (CNRS), Laboratoire de Signaux et Systemes, Yvette, France. From 1986 to 1998, she held a research position with the Institute for Problem of Mechanical Engineering, the Academy of Science of Russia, St. Petersburg. During 1998, she was an Associate Researcher with the Center for Control Engineering and Computation, University of California at Santa Barbara. During 1999, she was with the INRIA Rhone Alpes, Monbonnot, France. She is coauthor of over 90 scientific articles and book chapters. Her research interests include stability of nonlinear time-varying systems, control of electromechanical systems, nonlinear, and robust control.

11:00-12:00 Ubirajara F. Moreno (Professor, Department of Automation and Systems (DAS), Federal University of Santa Catarina (UFSC))

Title: Modelling and Simulation of Online Social Networks

Abstract: From the first Internet-based social networking applications designed to get people in contact and make friends, to social networks made up of over 2 billion users, the combination of communication networks, portable devices and AI has changed the way People interact and make decisions. The extent of this influence could be observed not only in marketing, and social behavior but also in referendums and elections, leading to distortion of democratic manifestations and representations. The aim of this presentation is show that an approach based on Systems & Control could be applied to modelling and analisys of the behavior of social networks, as well as, to assess some regulatory policies. The analysis are based on simulation of this models on small and large scale networks.

Biography: Since 2004, Ubirajara F. Moreno is a professor at the Department of Automation and Systems (DAS) at Federal University of Santa Catarina (UFSC). In the period of 2014 to 2016 he served as Director of the Campus of Blumenau from the Federal University of Santa Catarina. He participated in several national and international cooperation projects (PROCAD, BRAFITEC, CAPES / COFFECUB, ANP-PRH-34, CNPq-CNRS, CAPES / GRICES, CAPES/SIU, among others), having coordinated a project of Cooperation Brazil / Cuba: CAPES / MES, 108/2010: entitled Development of an Embedded System of Low Cost for Industrial Monitoring and Diagnosis and a cooperation project Brazil / Portugal: CAPES / FCT 353/13 entitled PICC - Integrated Controllers and Communications Project for NCS. In 2016 he was the national committee chairman of the 1st IFAC Conference on Cyber-Physical & Human Systems held in Florianópolis. Currently coordinates the BRAFITEC project, Brazil / France, entitled Franco-Brazilian Cooperation Project for the Training of Engineers in the Control and Automation Area, in partnership with CentraleSupelec, EC Nantes, UFRGS and UNICAMP, and participates in a Brazil/Norway project of international cooperation on Modeling and Control Strategies with Application in Offshore Oil and Gas Production . He participated in joint research projects with the industry in the development of monitoring systems (Petrobras, Bosch Rexroth).The research interests of prof. Ubirajara Franco Moreno are: Networked Control Systems, Cooperative Robotics, Systems Monitoring and Human Machine Interaction. From August/2019 to April/2020 he is in a sabbatical stay, at L2S, working with Françoise Lamnabhi-Lagarrigue, on Cyber-Physical and Human Systems (CPHS) interaction in Industry 4.0.