Seminars
8 February: Seminare by Vincent Andrieu, title : "Remarques sur l'existence d'un observateur de Kazantzis-Kravaris/Luenberger".
22 February: GARTEUR Meeting of the Flight Mechanic Action Group AG15, organized at LAAS-CNRS by S. Tarbouriech, I. Queinnec et G. Garcia.
4 June: Seminar by J.C. Geromel: "Beyond classical multipliers for robust control synthesis via LMI optimization."
27 June: Seminar on Robust Control:
- Tetsuya Iwasaki, University of Virginia, USA, "Feedback Control Synthesis with General Frequency Domain Specifications".
- Joao Manuel Gomes da Silva, UFRGS, Porto Alegre, BR, "Stabilization of neutral systems with saturating inputs".
- Shankar Bhattacharyya, Texas A & M University, USA, "Controller Synthesis without identification".
29 September : Seminare by A. Garulli.
Positivity of homogeneous polynomial forms plays a key role in several
system analysis and control problems.
The main objective of this talk is to present a new technique for
tackling some classes of minimum distance problems, which are relevant to several important problems in the analysis of control systems. By exploiting a sum-of-squares parameterization of homogeneous forms, it is shown that a lower bound to the solution of a quadratic distance problem can be obtained by solving a one-parameter family of LMI feasibility tests. Tightness of the lower bound is investigated, providing both a simple algorithmic procedure for a posteriori optimality testing and a structural condition on the related homogeneous form that ensures optimality a priori. In the second part of the talk, the same homogenous form parameterization is employed to introduce new families of Lyapunov functions, which turn out to be useful for robustness analysis of systems affected by structured uncertainties. It is shown that the use of the proposed Lyapunov functions enhance robust stability tests and robust performance evaluation, both for time-invariant and time-varying uncertainties, with respect to other classes of Lyapunov functions considered in the literature (quadratic, piecewise, linear parameter-dependent, etc.).
14-18 November: R. Tempo is visiting LAAS. Two seminars are scheduled:
- Randomization-Based Methods for Systems and Control ;
- Mixed Deterministic/Randomized Methods for Fixed Order Controller Design.
6 December : Seminar by Cedric Langbort at 10h30, salle Europe : "Distributed control of large systems: a convex approach".
7 December : Seminar by Lucie Baudouin at 10h30, salle Carlit : "Robust Control of a bimorphe mirror".
20 December : Seminar by Andrew Teel at 9h30, salle Tourmalet, "Design and analysis of hybrid control systems" followed by a seminar by Alexander Megretski at 11h, "Model reduction of LPV systems and finite state automata".
Ph.D. defence
23 Augut: Ph.D. defence of Valter Junior de Souza Leite.
Title: Robust Control for Linear Systems: a Parameter-Dependent Functions Approach.
Committee: W.C. Amaral (UNICAMP, Bresil), President - P.L.D. Peres (UNICAMP, Bresil), Advisor - S. Tarbouriech (LAAS, France), Advisor, E.B. Castelan (UFSC, Bresil) - P.A. Bliman (INRIA, France) - I. Queinnec (LAAS, France), G. Garcia (LAAS, France).
14 Septembre: Ph.D. defence of Juan-Carlos Zùñiga.
Title: Numerical Algorithms for Polynomial Matrices and Applied to Control Theory.
Commitee: Germain Garcia, INSA Toulouse, President - Paul Van Dooren, Université Catholique de Louvain, Belgique - Hisham Abou-Kandil, Ecole Normale Supérieure de Cachan - Michael Sebek, Université Technique Tchèque de Prague - Javier Ruiz-Leòn, CINVESTAV Guadalajara, Mexique - Didier Henrion, LAAS-CNRS Toulouse, Advisor.
30 Septembre: Ph.D. defence of Luc Reberga at 10h30 in salle de conférence, LAAS-CNRS.
Title : Commande Robuste Multivariable des Turboréacteurs.
Commitee : Germain Garcia, INSA Toulouse, Président - Mohammed M’Saad, ENSICaen - Gilles Duc, SupElec - Jean-Pierre Bugeat, SNECMA - Florian Vary, SNECMA - Jacques Bernussou, LAAS-CNRS, Advisor - Didier Henrion, LAAS-CNRS, Advisor.
21 October: Soutenance de thèse de Fabien Lavergne, 15h salle de conférences.
Titre : Méthodologie de synthèse de lois de commandes non-linéaires et robustes : Application au suivi de trajectoire des avions de transport.
Directeurs de thèse : Germain Garcia / Sophie Tarbouriech
Responsable industriel : Fabrice Villaume
Jury : M. Courdesses, Université Toulouse III Paul Sabatier - J. Daafouz, Institut National Polytechnique de Lorraine - G. Garcia, INSA Toulouse - M. Jeannau, Airbus France - S. Mondie-Cuzange, Cinvestav (Mexique) - F. Villaume, Airbus-France - P. Menard, Airbus-France.
Visitors
21 February - 21 April: Mr. Addison Rios Bolivar is invited professor at LAAS-CNRS.
1-30 June: J.M. Gomes Da Silva Jr. from l'UFRGS is invited professor of the Toulouse University UPS.
28 September - 2 October: A. Garulli is visiting LAAS.
11-25 October: Elyes Maherzi (INSAT - Tunis) is visiting MAC team for a cooperation with J. Bernussou on "Predictive Control and Robustness".
14-18 November: R. Tempo is visiting LAAS. Two seminars are scheduled:
- Randomization-Based Methods for Systems and Control ;
- Mixed Deterministic/Randomized Methods for Fixed Order Controller Design.
October- November: Maria Lopez (Universidad de Almeria, Espagne)
is visiting MAC team for a cooperation with J.L. Calvet on controlability (and observability) of non-linear systems.
28 November - 2 December : Visit of Martini Adnan, PhD student with LGIPM-ENIM.
5-7 December: Cedric Langbort is visiting LAAS.
19-20 December: Alexander Megretski is invited by the "pôle MOCOSY" and hosted by the MAC team.
16-22 December: Andrew Teel, university of Santa-Barbara, is invited by the "pôle MOCOSY" and hosted by the MAC team.
Conferences
11-18 January: J.-B. Lasserre is Main Lecturer at the Summer School in Optimization, 7th French-Latin American Congress in Applied Mathematics, Santiago du Chili.
12-13 January: Christophe Prieur is at the Mini-Workshop on "hybrid, quantized and switched systems", Politecnico di Torino, Italie.
26-29 January: J.-B. Lasserre is Invited speaker at STATDEP 2005 (Statistics for Dependent Data), Paris.
31 January: D. Arzelier and D. Henrion are at the GT MOSAR meeting in Cachan.
14-18 March: J.-B. Lasserre is Invited speaker at "Positive Polynomials" workshop, Luminy.
11-14 April: G. Garcia and S. Tarbouriech are at Advanced Modeling and Control in Anesthesia conference, Monte Verità, Suitzerland.
4-7 July: D. Arzelier, D. Henrion, V. Mahout, C. Prieur, L. Reberga attend the IFAC world congress in Prague.
30 June - 9 July: J.-B. Lasserre is Invited speaker at the Optimization workshop for the Foundations of Computational Mathematics(FoCM) meeting, Universidad de Cantabria in Santander, Spain.
25-29 July: J.-B. Lasserre is Invited speaker at the workshop on Mixed-Integer Programming that is held at the Institute for Mathematics and its Applications, University of Minnesota campus.
1-5 August: D. Henrion and J.-B. Lasserre are invited speakers at the workshop on "Theory and Algorithms of Linear Matrix Inequalities", l'American Institute of Mathematics, Palo Alto, California.
5-7 September: D. Arzelier, J. Bernussou and C. Farges attend the JDMACS, Lyon.
5-9 September: J.-B. Lasserre is Invited speaker at the annual meeting of the european network RAAG (Real Algebraic and Analytic Geometry), Passau, Germany.
11-14 September: C. Prieur is participating to the 4th Junior European Meeting on "Control and Optimization”, Institute of Mathematics and Physics of the Bialystok Technical University, Poland.
31 October - 2 November: J.-B. Lasserre is plenary speaker at the "3rd Sino-Japanese Optimization Meeting (SJOM3)" à Singapour.
2-9 November: D. Henrion and J.-B. Lasserre attend the "Real Algebra, Quadratic Forms and Model Theory; Algorithms and Applications" workshop at Institut Henri Poincare, Paris.
12-15 December: D. Arzelier, J. Bernussou, F. Gouaisbaut, D. Henrion, J.B. Lasserre, D. Peaucelle, C. Prieur, I. Queinnec and S. Tarbouriech attend the CDC-ECC conference in Seville.
Other
11-18 January: D. Arzelier is at INP Grenoble - lecture on "LMI in Control".
10-11 February: Christophe Prieur is at the meeting of WP5 european network HYCON at Bochum, Germany.
7-25 March: D. Peaucelle is at IPME, St. Petersbourg - for a bilateral cooperation CNRS-Russian Academy of Sciences.
3 February - 27 March: D. Henrion is at the Technical University in Prague. Lecture courses with M. Kocvara on LMIs and BMIs.
15 Avril: G. Garcia and S. Tarbouriech make a seminar at ETH Zurich.
13-29 June: D.Henrion is in Praha (Departement of Automatic Control, Faculty of Electrical Engineering, Czech Technical University in Prague.
29-30 June: I. Queinnec is at EADS, Munich for a GARTEUR PIO meeting.
8-17 August: D.Henrion is in Prague (Departement of Automatic Control, Faculty of Electrical Engineering, Czech Technical University in Prague.
12-16 September: J.-B. Lasserre is speaker at the Doctoral school on Optimization over Polynomials and Semidefinite Programming, University of Klagenfurt (Austria).
8 August - 8 November: S. Tabouriech and I. Queinnec are invited professors at Unicamp, Campinas, Brazil.
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