Electroacoustic Absorbers Based on Passive Finite-Time Control of Loudspeakers: A Numerical Investigation
| Autor: | Marc Wijnand, Tristan Lebrun, Thomas Hélie, Brigitte d'Andréa-Novel, David Roze |
|---|---|
| Přispěvatelé: | Systèmes et Signaux Sonores : Audio/Acoustique, instruMents (S3AM), Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), ANR-15-CE23-0007,Finite4SoS,Commande et estimation en temps fini pour les Systèmes de Systèmes(2015), ANR-16-CE92-0028,INFIDHEM,Systèmes interconnectés de dimension infinie pour les milieux hétérogènes(2016) |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]
Physics 0209 industrial biotechnology Eletroacoustic transducer Finite time control Acoustics Plane wave 02 engineering and technology Low frequency Nonlinear control 01 natural sciences [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Nonlinear system 020901 industrial engineering & automation Computer Science::Sound [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] 0103 physical sciences Duct (flow) [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC] Loudspeaker Port-Hamiltonian systems Sound pressure 010301 acoustics Finite-time control |
| Zdroj: | Nonlinear Dynamics and Control ISBN: 9783030347468 Nonlinear Dynamics and Control Proceedings of the First International Nonlinear Dynamics Conference (NODYCON 2019) International Nonlinear Dynamics Conference International Nonlinear Dynamics Conference, Feb 2019, Rome, Italy. ⟨10.1007/978-3-030-34747-5_3⟩ |
| DOI: | 10.1007/978-3-030-34747-5_3 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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