[institut] Seminar

[Bratislav Marinkovic]

S E M I N A R

Centra za atomsku i subatomsku fiziku

Laboratorija za fiziku atomskih sudarnih procesa

 

 

” Fault tolerant control for multi-sensor switching schemes: Invariant set constructions and implications”

 

 

Dr. Sorin Olaru

 

Supélec (École Supérieure d'Électricité) France

 

 

 

 

utorak, 28.10.2008. u  12 h, velika sala ”Zvonko Marić” Instituta za fiziku, Pregrevica 118, Zemun

 

Saradnja iz programa "Pavle Savic" 

Presenter: Sorin Olaru 
Sorin Olaru received his B.S. (2001) and M.S. (2002) in electrical 
engineering from the University "Politehnica" Bucharest, and the PhD. 
degree (2005) in Automatic Control from University Paris XI, France. 
He held a research position in INRIA Rennes and visiting appointments 
at NTNU Trondheim (Norway) and CSDC Newcastle (Australia). He is 
currently an assistant professor in Supélec (École Supérieure 
d'Électricité) France. 
Sorin Olaru is the receipt of the EU Archimedes prize 2002 for his 
work on the predictive control for hybrid systems with applications in 
irrigations. His research interests include the optimisation-based 
control techniques, viability and geometrical characterisation of 
constrained control. Lately he is involved in research projects 
related to network control systems with results on fault tolerant 
control and control of systems affected by delays.

Abstract: 
In this talk we will present several results on the control on 
multi-sensor schemes. The control design is based on a switching 
strategy (among the state estimations) and handles the fault 
appearance by geometrical separation of the sets characterising the 
healthy and faulty system functioning. 
Positive invariance is a common analysis and control design tool for 
systems affected by constraints and disturbances. In the present talk, 
the construction of epsilon-approximations of minimal robust positive 
invariant sets for linear systems will be revisited. The results are 
used in the context of multi-sensor control schemes which have to deal 
with attraction basins and invariant sets for different operating 
regimes. Indeed, these are specific problems originated by the 
switching between different sensor-estimator pairs and by the presence 
of faults in some of the sensors. Within the same framework, global 
stability of the switching strategies can be assured if the invariant 
sets topology allows the exclusive selection of estimates obtained 
from healthy sensors. 
The problem of sensor recovery will be evoked and extensions of the 
method to nonlinear models are pointed out. Finally, is shown that 
receding horizon optimisation strategies can be further used to 
improve the performances and to allow an increased range of fault 
tolerant functioning.

----------------- 
Dr. Bratislav Marinkovic 
Institute of Physics, Belgrade 
Center for Atomic and Subatomic Physics 
Laboratory for Atomic Collision Processes 
Pregrevica 118, P.O.Box 68 
11080 Belgrade PAK:200423, SERBIA 
tel:+381 11 316 0882 
fax:+381 11 316 2190 
http://www.phy.bg.ac.yu/~marinkov

 
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