Electroacoustic absorbers based on finite-time control of loudspeakers: a numerical investigation - Institut de Recherche et Coordination Acoustique/Musique Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Electroacoustic absorbers based on finite-time control of loudspeakers: a numerical investigation

Résumé

This paper proposes a numerical investigation of a controlled loudspeaker designed to absorb acoustic plane waves at a duct termination. More precisely, a nonlinear control for a current-driven loudspeaker is presented, that relies on (i) measurements of velocity and acoustic pressure at the membrane, (ii) a linear electroacoustic loudspeaker model and (iii) a nonlinear finite-time control method. Numerical tests are carried out by a passive-guaranteed simulation of the loudspeaker dynamics in the port-Hamiltonian systems formalism. The sound absorption efficiency is evaluated up to 300Hz by computing the reflected pressure at the membrane. The results are compared with a similar control architecture: the finite-time control for sound absorption proves effective, especially in the low frequency range.
Fichier principal
Vignette du fichier
nodycon2019_fullpaper_v2012.pdf (409.07 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02046069 , version 1 (02-09-2020)
hal-02046069 , version 2 (29-10-2020)

Identifiants

  • HAL Id : hal-02046069 , version 1

Citer

Tristan Lebrun, Marc Wijnand, Thomas Hélie, David Roze, Brigitte d'Andréa-Novel. Electroacoustic absorbers based on finite-time control of loudspeakers: a numerical investigation. International Nonlinear Dynamics Conference, Feb 2019, Rome, Italy. ⟨hal-02046069v1⟩
386 Consultations
167 Téléchargements

Partager

Gmail Facebook X LinkedIn More