Research interests
Modeling and control of hybrid systems
Hybrid systems are a class of dynamical systems involving continuous and discrete aspects. Thus, they allow to take into account some complex behaviors in the models (such as discontinuities, jumps). The control of hybrid systems presents new challenges regarding the methods, in particular due the combinatorial aspects involved by the presence of discrete valued variables in the equations.
Model Predictive Control
An efficient model based approach for the control of complex and/or constrained systems. The capability to handle constraints makes this approach usefull for the control problem of hybrid systems.
Power system networks
Voltage control of power grids is an important issue and needs for efficient control schemes. New contraints on those systems such as economical and environmental ones as well as strong evolutions (interconnexion reinforcement, decentralized generation) encourage industrials and reshearcher to develop new models, methods and tools. Energy issues are one of the greatest concern of this beginning century!
Publications
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Conference papers
- H. Cormerais, J. Buisson, S. Leirens, P.-Y. Richard, "Calcul symbolique de l'ensemble des équations d'état pour les bond graphs en commutation", in the proceedings of the Conférence Internationale Francophone d'Automatique (CIFA), Nantes, 2002.
- S. Leirens, J. Pierquin, "Modelling and control of an aluminium strip unwinder-rewinder", in the proceedings of the European Control Conference (ECC), Cambridge, 2003.
- S. Leirens, J. Buisson, P. Bastard, J.-L. Coullon, "An efficient algorithm for solving model predictive control of switched affine systems", in the proceedings of the 17th Scientific Computation, Applied Mathematics and Simulation World Congress (IMACS), Paris, France, 2005.
- S. Leirens, J. Buisson, P. Bastard, J.-L. Coullon, "A hybrid approach for voltage stability of power systems", in the proceedings of the 15th Power Systems Computation Conference (PSCC), id. 291, Liège, Belgium, 2005.
- S. Leirens, J. Buisson, "Commande prédictive des systèmes PWA avec entrées mixtes", in the proceedings of the Conférence Internationale Francophone d'Automatique (CIFA), Bordeaux, 2006.
- S. Leirens, J. Buisson, "An efficient algorithm for predictive control of piecewise affine systems with mixed inputs", in the proceedings of the 2nd IFAC Conference on Analysis and Design of Hybrid Systems (ADHS), Alghero, Sardinia, 2006.
- R.R. Negenborn, A.G. Beccuti, T. Demiray, S. Leirens, G. Damm, B. De Schutter, M. Morari, "Supervisory hybrid model predictive control for voltage stability of power networks", in the proceedings of the American Control Conference 2007, New York, pp. 5444-5449, July 2007.
Book chapter
- S. Leirens, J. Buisson, chapter "La commande prédictive hybride" in "La commande prédictive : Avancées et perspectives" by P. Boucher, D. Dumur editors, pages 119-155, Traité IC2, série Systèmes automatisés, Hermès Science Publications, 2006, ISBN 2-7462-1361-3.
Thesis
- S. Leirens, "Développement d'un prototype pour l'implémentation de méthodes d'identification et de contrôle", Master thesis, Pechiney - Research Center of Voreppe, 146 pages, july 2002.
- S. Leirens, "Approche hybride pour la commande prédictive en tension d'un réseau d'énergie électrique", PhD thesis, Supélec - University of Rennes I (France), 174 pages, december 2005.
Miscellaneous
- S. Leirens, J. Buisson, "Approche hybride pour la commande en tension d'un réseau électrique", Research Journal of Supélec, March 2006.
Talks
- 04/03/04 - "Approche hybride pour l'étude de l'instabilité de tension des réseaux électriques", Journées Recherche de Supélec, Rennes, France.
- 04/06/04 - "Approche hybride pour la tenue en tension des réseaux d'énergie électrique", Commission Automatique et Systèmes de Supélec, Gif sur Yvette, France.
- 15/11/04 - "Predictive Control for Network Stability", Areva T&D European Users Group, Gressy, France.
- 16/12/05 - "Approche hybride pour la commande prédictive en tension d'un réseau d'énergie électrique" (Soutenance de thèse), Supélec, Rennes, France.
- 02/02/06 - "Approche hybride pour la commande prédictive en tension d'un réseau d'énergie électrique", GDR MACS - Groupe SDH, Paris, France.
- 05/07/06 - "Hybrid approach for voltage predictive control of electric power systems", Supélec, Rennes, France.
- 15/09/06 - "The Bond Graph Modelling", ExpoIDAE, Bogotá, Colombia.
- 15/09/06 - "Hybrid approach for voltage predictive control of electric power systems", ExpoIDAE, Bogotá, Colombia.
- 26/10/06 - "A Hybrid Approach for Voltage Stability of Power Systems", Supélec, Gif sur Yvette, France.
- 08/11/06 - "A hybrid approach for voltage predictive control of electric power grids", TU Delft, Holland.
- 18/09/07 - "Optimización de Sistemas Dinámicos, Aplicación a un Modelo Biológico", ExpoIDAE 2007, Bogotá, Colombia.
- 22/11/07 - "Hybrid approach for voltage predictive control of electric power systems", Universidad Nacional de Manizales, Colombia.
- 18/02/08 - "Hybrid approach for voltage predictive control of electric power systems", Universidad de Los Andes, Bogotá, Colombia.
Tools
Computation
- Matlab/Simulink: High-level technical computing language and environment for algorithm development, data analysis and numeric computation
- Mathematica: Numeric and symbolic computation
Optimization
- CPLEX: High-performance optimizers for solving linear programming, quadratic programming, quadratically constrained programming and mixed integer programming problems
Modelling and Simulation
- Modelica: Object-oriented modelling language for complex physical systems
- Dymola: Dymola is a complete tool for modeling and simulation of integrated and complex systems
- OpenModelica Project: The goal of the project is to create a complete Modelica modeling, compilation and simulation environment based on free software
LaTeX
- MiKTeX: The most commonly used implementation of TEX and related programs for Windows
- TeXnicCenter: A free integrated development environment (IDE) for developing LaTeX-documents on Windows
- Texmaker: Free LaTeX editor; runs on Unix, Macosx and Windows systems
- The Not So Short Introduction to LaTeX 2ε: If you want to learn how to write your documents with LaTeX, this introduction is for you
Links
On-line ressources
Journals
People
- Rudy Negenborn: Multi-agent control of large-scale transportation networks
Others
