Soutenance de thèse de M. Silviu MEDIANU

Publié le 4 décembre 2017

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Date de l'événement : Lundi 4 Décembre 2017 à 14h00

Salle A042 à l'Esisar
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Port-Hamiltonian systems identification

The defense dissertation will be in English and will take place in the room A042 at 02:00 PM, Monday, the 4th of December.

Committee members are :

M. Laurent Lefèvre, LCIS / Grenoble INP, co-advisor
M. Yann Le Gorrec, FEMTO-ST / ENSMM, reviewer
M. Denis Matignon, ISAE / Supaero
M. Dumitru Popescu, Polytehnica University Bucarest, co-advisor
M. Radu Emil Precup, Politehnica University Timisoara, reviewer

You are also invited to the drink which will follow the defense.

Abstract: the thesis proposes the development of a specific theory for Port Controlled Hamiltonian (PCH) systems identification. An analysis of structural identifiability is first
performed using classic or new (power energy) techniques to check the model structure identifiability. A new context of identifiability is proposed here, which makes
use of the inputs and power port energies knowledge and also a ‘port identifiability’ concept is proposed for the analysis of PCH systems. Then a practical identifiability
analysis is performed using a classic test, by adopting a perturbation model introduced on the interaction port of the PCH system. Further a discrete-time framework
is proposed, with different classic discretization rules for the flows and efforts, that are proved to preserve the continuous-time structure. The last part of the thesis proposes
the analysis of classic subspace identification algorithms for PCH systems using the previous time-discretization schemes. Besides it is proposed a new (power
energy approach), which makes use of the known inputs and power energies to determine the unknown system parameters. On this new context it is proved by
algorithms and simulations, that equivalent PCH systems for the real model, can be determined on each port. Thus it is proved that the system parameters can be determined in a classic or new (power energy) manner.

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mise à jour le 4 décembre 2017

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