Hamiltonian systems discrete-time approximation: Losslessness, passivity and composability - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Systems and Control Letters Année : 2017

Hamiltonian systems discrete-time approximation: Losslessness, passivity and composability

Résumé

In this paper a passive integrator dedicated to input/output Hamiltonian systems approximation is presented. In a first step, a discrete Hamiltonian framework endowed with a Lie derivative-like formula is introduced. It is shown that the discrete dynamics encodes energy conservation and passivity. Addition- ally, the characterization of the discrete dynamics in terms of Dirac structure is shown to be invariant by interconnection. The class is thus composable: networked systems belong to the class. In a second step, the discrete dynamics is considered as a one-step integration method. The method is shown to be convergent and provides a discrete-time approximation of an input/output Hamiltonian system. Accordingly, the discrete dynamics inherits intrinsic energetic characteristics (storage function and dissipation rate) from the original system. The method is thus tagged as passive integrator. As an illustration, the closed-loop behavior of interconnected subsystems and the stabilization of a rigid body spinning around its center of mass are presented.
Fichier non déposé

Dates et versions

hal-01643328 , version 1 (21-11-2017)

Identifiants

Citer

Said Aoues, Michaël Di Loreto, Damien Eberard, Wilfrid Marquis-Favre. Hamiltonian systems discrete-time approximation: Losslessness, passivity and composability. Systems and Control Letters, 2017, 110, pp.9-14. ⟨10.1016/j.sysconle.2017.10.003⟩. ⟨hal-01643328⟩
135 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More