Ponente: El curso será impartido por Julián Barreiro-Gómez, Post-Doctoral Associate in the Learning & Game Theory Laboratory at the New York University Abu Dhabi (NYUAD), United Arab Emirates
Fecha y hora: Se impartirá de forma telemática de martes 29 de septiembre a jueves 1 de octubre, de 16:00 a 19:00.
Lugar: Se ha creado en Blackboard Collaborate Ultra una sesión dentro del programa de doctorado 19/20 con el título del curso.
Enlace: https://eu.bbcollab.com/guest/12e6c787799e4b9b8c2591c8c9af4adc
Título: Continuous-Time Mean-Field-Type Games for Engineers
Module 1: Preliminaries
• Introduction and preliminary concepts
• Risk-aware in engineering systems
• LQ games, LQG games, mean-field-type games
• A summary of game-theoretical solution concepts
• Optimality system
• A simple method to solve mean-field-type game problems
Module 2: Continuous-time Mean-Field-Free Games
• LQ mean-field-free games
– A basic continuous-time control problem
– Deterministic mean-field-free differential game problems
– Stochastic mean-field-free differential game problems
Module 3: Continuous-time Mean-Field Games
• Atomic and non-atomic games (main differences)
• Philosophy of the mean-field games
• LQ mean-field games
Module 4: Scalar-Valued Mean-Field-Type Games
• Mean-field-type control
• Mean-field-type games
– Non-cooperative solution
– Cooperative solution
– Co-opetitive solution
CV de Julián Barreiro-Gómez:
Julian Barreiro-Gomez received his B.S. degree (cum laude) in Electronics Engineering from Universidad Santo Tomas (USTA), Bogota, Colombia, in 2011. He received the MSc degree in Electrical Engineering and the PhD degree in Engineering from Universidad de Los Andes (UAndes), Bogota, Colombia, in 2013 and 2017, respectively. He received the PhD degree (cum laude) in Automatic, Robotics and Computer Vision from the Technical University of Catalonia (UPC), Barcelona, Spain, in 2017, and the Best PhD Thesis in Control Engineering 2017 award from the Spanish National Committee of Automatic Control (CEA) and Springer. He is currently a Post-Doctoral Associate in the Learning & Game Theory Laboratory at the New York University Abu Dhabi (NYUAD), United Arab Emirates. His main research interests are constrained evolutionary game dynamics, mean-field-type games, distributed optimization, and distributed predictive control.
Prof. Alexandre Seuret
Senior Researcher del LAAS, Toulouse, Francia.
3 de junio a las 16:30
Duración aproximada: 3 horas.
El próximo 3 de junio a las 16:30 tendrá lugar el curso "Basics and concepts for the stability analysis of time-delay systems and some recent advances" impartido de forma remota por el Prof. Alexandre Seuret, Senior Researcher del LAAS, Toulouse, Francia.
La conexión se hará a través de la plataforma Backboard con el siguiente enlace: https://eu.bbcollab.com/guest/206178cece9744218010858ac6fe8763
Summary:
After a short overview of my research activities, I will present some basics on time-delay systems. This class of systems has been widely studied in the literature because of their relevance in practice. Indeed, time delays appears in many applications in Biology, Engineering, Traffic control, Fluid Mechanics, Computer Science. Delays are usually associated to transport phenomena of information data or of physical material, or computer latencies.
In this lecture, I will first present the main structural modifications when delays are included in the dynamics of a system and the associated difficulties when it comes to the stability analysis of this class of infinite-dimensional systems. In a second stage, I will review the basics of the time-domain approach and the application of Lyapunov-Krasovskii Theorem, which corresponds to the extension of the usual Lyapunov Theorem to the case of time-delay systems. In the case of linear systems, the stability conditions are presented as Linear Matrix Inequalities that can be easily implemented and tested on Matlab. Some exercises on Matlab will allow the attendance to familiarize to this framework and to understand how to implement simple LMIs on the LMI toolbox of Matlab and to draw some conclusions on this attempt of stability analysis.
After drawing some conclusions, on this exercise session, I will continue with several advances, that I have been working on over the last years. More particularly, I will present a method to reduce the conservatism (or equivalently to provide more accurate) stability conditions, which have interesting structures. These improvements are related to polynomial approximations, (truncated) Parseval identity, Padé approximation etc… Since time delay systems represent a particular class of infinite-dimensional systems, I will show you how this method can be considered to assess stability properties of systems governed by partial differential equations. The presentation will be concluded with some perspectives.
The material for the exercises session is available on the following link
https://www.dropbox.com/sh/u5anxpgafk4facv/AACq-DcQmxo8zjm87IbeEcKVa?dl=0
Brief CV:
A. Seuret was born in 1980, in France. He earned the Engineer’s degree from the ‘Ecole Centrale de Lille’ (Lille, France) and the Master’s Degree from the University of Science and Technology of Lille (France) in 2003. He received the Ph.D. degree in Automatic Control from the ‘Ecole Centrale de Lille’ and the University of Science and Technology of Lille in 2006. From 2006 to 2008, he held one-year postdoctoral positions at the University of Leicester (UK) and the Royal Institute of Technology (KTH, Stockholm, Sweden). From 2008 to 2012, he was a junior CNRS researcher (Chargé de Recherche) at GIPSA-Lab in Grenoble, France. Since 2012, he has been with the “Laboratoire d’Architecture et d’Analyse des Systèmes’’ (LAAS), in Toulouse, France. Since 2018, he is Senior CNRS Researcher (Directeur de Recherches), at LAAS, Toulouse, France.
A. Seuret serves as an Associate Editor for International Journal of Control, and is member of the IEEE CSS CEB and of the IFAC Technical Committees on Linear Systems (Publication Chair) and Networked Control Systems. He has been participating to the organization of several conferences such as IFAC WC’17, Necsys’10…
His research interests include time-delay, sampled-data and networked control systems, stability and control of systems governed by partial differential equations, hybrid dynamical systems, multi-agent and distributed control and estimation.
Title: "Generation of oscillations in nonlinear systems: application to nonholonomic systems"
given by Prof. Romeo Ortega, from LSS-Centrale Supelec, France.
Lunes 9 de marzo de 16 a 18 h en el aula 008 de la ETSI.
Slides: https://consigna.us.es/539284
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Summary:
In this talk we show that a slight modification to the widely popular interconnection and
damping assignment (IDA) passivity-based control and the (I&I) inmersion and invariance
methods—originally proposed for stabilization of equilibria of nonlinear systems—allows
us to provide solutions to the more challenging orbital stabilization problem. For the IDA
approach, two different, though related, ways how this procedure can be applied are proposed.
First, the assignment of an energy function that has a minimum in a closed curve, i.e., with
the shape of a Mexican sombrero. Second, the use of a damping matrix that changes “sign"
according to the position of the state trajectory relative to the desired orbit, that is, pumping
or dissipating energy. The proposed methodologies are illustrated with the example of the
induction motor and prove that it yields the industry standard field oriented control. We
also show that ensuring orbital stabilization for mechanical systems is best formulated using
a variation of the I&I technique and apply this result to generate smooth, time-invariant
controllers for nonholonomic systems. These results have been reported in:
1. Orbital stabilization of nonlinear systems via the immersion and invariance technique,
R. Ortega, B. Yi, J. G. Romero and A. Astolfi, Int. J. on Robust and Nonlinear
Control, (to appear). (arXiv:1810.00601)
2. Orbital stabilization of nonlinear systems via energy shaping and pumping-and-damping
injection, B. Yi, R. Ortega, D. Wu and W. Zhang, Automatica, (to appear).
3. Smooth, time-invariant regulation of nonholonomic systems via energy pumping-anddamping,
B. Yi, R. Ortega and W. Zhang: Int. J. on Robust and Nonlinear Control,
(submitted), (arXiv:1712.08209.).
Brief CV:
Romeo Ortega was born in Mexico. He obtained his BSc in Electrical and Mechanical
Engineering from the National University of Mexico, Master of Engineering from Polytechnical
Institute of Leningrad, USSR, and the Docteur D‘Etat from the Politechnical Institute
of Grenoble, France in 1974, 1978 and 1984 respectively.
He then joined the National University of Mexico, where he worked until 1989. He was a
Visiting Professor at the University of Illinois in 1987-88 and at McGill University in 1991-
1992, and a Fellow of the Japan Society for Promotion of Science in 1990-1991. He has been
a member of the French National Research Council (CNRS) since June 1992. Currently he
is a Directeur de Recherche in the Laboratoire de Signaux et Systèmes (CentraleSupelec)
in Gif-sur-Yvette, France. His research interests are in the fields of nonlinear and adaptive
control, with special emphasis on applications.
Dr Ortega has published three books and more than 350 scientific papers in international
journals, with an h-index of 84. He has supervised 35 PhD thesis. He is a Life Fellow Member
of the IEEE since 1999 and an IFAC Fellow since 2016. He has served as chairman in several
IFAC and IEEE committees and participated in various editorial boards of international
journals. Currently he is the Editor in Chief of Int. J. on Adaptive Control and Signal
Processing and Editor at Large of Asian J. of Control.
Título: "Event-triggered and time-triggered hybrid controls for switched affine systems: applications to power converters"
impartida por la profesora Carolina Albea,
Universidad de Toulouse.
Día 28 de enero de 10 a 12 en el aula 009.
Breve resumen: Switched Affine Systems (SASs) are encountered in many applications including DC-DC power conversion, biochemical networks, aerospace and urban traffic. These systems are characterized by the fact there is not a common equilibrium with the consequence that asymptotic stabilization of a desired functioning point is not possible with finite switching rates (uniform dwell time).
This seminar will present stabilization methods of such a class of systems via a hybrid dynamical paradigm. The advantages of this framework relies on the possibility to account for the full continuous/discrete nature of SASs. More especially, it allows to represent in a consistent and elegant manner controllers with periodic as well as aperiodic updates, driving to a time-triggered and event-triggered controls.
An event-triggered control strategy under a HDS paradigm is designed for SASs based on a Lyapunov matrix-based min-projection. This innovative and relevant solution is applicable to power converters, which reduces switching, while increasing the life of these systems and reducing the energy dissipated.
In many occasions, the control law has to be periodically updated in a time-triggered method, as it is generally encountered in electronics applications. A new paradigm different to the Lyapunov matrix-based min-projection control is developed, a free-matrix based control law, providing some advantages compared with other control results.
Perfil: Carolina Albea Sánchez completed an international thesis between the University of Seville (Spain) and the University of Grenoble (France), about advanced control laws for power converters. After her PhD defended in 2010, her researches continued with a post-doctoral contract at Alternative Energies and Atomic Energy Commission (CEA) in France, working on developing network controllers for Systems on Chips, being composed of different time dynamics. Then, she joined the University of Toulouse 3-Paul Sabatier (France) in 2011 and the research laboratory, Laboratory of Analysis and Architecture of Systems (LAAS-CNRS), as associated professor. Her main research topics include hybrid control of switched systems, hybrid dynamical systems applications, control of electronic converters and distributed control. Currently, she enjoys of a Sabbatical year in the Dpt. of Engineering of Systems and Automatic at Seville University.
Título: Optimal Modulation and Control of Power Conversion Systems
Conferenciante: Ricardo Aguilera
Afiliación: Senior Lecture, University of Technology Sydney
Fecha: 14/11/2019
Hora: 10:00
Duración: 2 horas
Lugar: Aula 008, ETSI
Resumen:
Power converters have been in constant development not only to obtain new favourable topologies, but also to improve control techniques used. In this latter field, Model Predictive Control (MPC) has emerged as a promising control technique for power converters and drives. In this presentation, recent predictive control formulations to govern power converters are presented. Moreover, some directions on how to include modulators into the optimal control problem are given. These predictive control approaches are part of the research carried out by the author which exploit the theory behind MPC to obtain advantageous controllers for power converters.