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IS A MIXED DESIGN OF OBSERVER‐CONTROLLERS FOR TIME‐DELAY SYSTEMS INTERESTING?
Author(s) -
Sename O.
Publication year - 2007
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1111/j.1934-6093.2007.tb00321.x
Subject(s) - control theory (sociology) , observer (physics) , separation principle , controller (irrigation) , state observer , computer science , stability (learning theory) , alpha beta filter , control (management) , control engineering , engineering , nonlinear system , artificial intelligence , physics , quantum mechanics , machine learning , extended kalman filter , agronomy , biology , moving horizon estimation , kalman filter
This paper deals with H ∞ observer‐based feedback control for linear time‐delay systems, in the framework of delay independent stability. We will propose a new LMI solution to observer‐controller design that ensures a disturbance attenuation level for the controlled output as well as for the state estimation error, which is an open problem. This will be compared with a well‐known solution and with a usual strategy in control which consists in designing the observer and the controller separately. Our aim is to try to bring a positive answer to the following question: is there an interest to solve the problem in a single (unique) formulation or should we design separately the observer and the controller? An application to a wind tunnel model is provided to emphasize the interest of the given results, particularly in comparison with existing results on H ∞ observer‐based control.