Séminaire MOCOSY : Time-delay
analysis and H-infinity design
|
|
| Intervenant:
|
José Geromel Professor
of Control Systems Analysis and Design
School of Electrical and Computer Engineering University of Campinas Brazil. José C. Geromel was born in Itatiba,
SP, Brazil in 1952. He received the Bs. and Ms. degrees in Electrical
Engineering from University
of Campinas -UNICAMP, Brazil, in 1975 and 1976 respectively and the
Docteur d'État degree from University Paul Sabatier -
LAAS /
CNRS, France,
in
1979. He joined the School of
Electrical and Computer Engineering at UNICAMP in
1975, where he is presently professor of Control Systems
Analysis
and Design. In 1987 he held a visiting professor position
at
Milan Polytechnic Institute, Milan, Italy. Prof. Geromel is
Associate
Editor of International Journal of Robust and Nonlinear Control and
European
Journal of Control. He was awarded in 1994 the Zeferino Vaz Award for his
teaching and
research activities at UNICAMP and, in 2007 the Scopus Award jointly
awarded by
Elsevier and CAPES / Brazil. Since 1991 he has been a
Fellow 1-A
and in 1997 he has been elected member
of
the Electrical Engineering Committee of the CNPq -
Brazilian
Council for Research Development. From 1998 to 2002 he has served
as
the
Dean for Graduate Studies at UNICAMP. Since 1998 he has been a
member
of the Brazilian
Academy of Science. In 1999 he
has been
named for
Chevalier dans l' Ordre des Palmes Academiques by the French Minister
of
National Education. In 2003 he has been elected member of the IFAC
Council for
the term 2003-2005. He supervised several Ms. and Ph.D. students.
He published more than 180 technical papers, 80 of
them in
international journals. He is co-author of the books Control
Theory
and Design - with P. Colaneri and A. Locatelli,
Academic
Press Inc., 1997 and Análise Linear de Sistemas Dinâmicos, in
Portuguese, -
with A.G.B.Palhares, Edgard Blücher, Ltda, 2004. His current research interests include convex programming theory, robust filtering and control design, switched systems.
|
| Date : | 21 septembre 2009 |
| Heure : | 11h00 |
| Lieu : |
Salle Europe LAAS, 7 Av. du Colonel Roche |
| Résumé
: |
This
seminar is entirely concerned to linear continuous time-delay
systems. Recent results including stability analysis and filter and con- trol design in the framework of H-infinity Theory, based on the so called Rekasius substitution formula, are introduced and discussed. They stem from a finite order LTI comparison system which whenever associated to a time-delay system provides enough information for stability detection and H-infinity norm determination. In a first step, the celebrated Nyquist criterion is adopted for stability studies. Afterwards, state feedback control and filter design are used to show the potentialitiesof the proposed methodology. The results are generalized to cope with a class of neutral systems. Several examples are solved for illus tration and comparison purposes. They show that proposed method outperforms the ones available in the literature to date. |