Active control of an off-axis noise source

Auteurs-es

  • J. Guo Sch. of Occup. and Environ. Hygiene, Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
  • M. Hodgson Sch. of Occup. and Environ. Hygiene, Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
  • J. Pan Sch. of Occup. and Environ. Hygiene, Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z3, Canada

Mots-clés :

Natural frequencies, Optimal control systems, Optimization, Wavefronts, Active control

Résumé

Un système multi-canaux de contrôle actif du bruit peut créer une grande zone de silence en champ libre quand la source sonore est située sur l’axe principal du système. Dans cette étude-ci, on étudie numériquement l’efficacité d’un système de contrôle actif dans le cas d’une source déplacée de l’axe principal. On a trouvé qu’et la position et la forme de la zone de silence changent nettement avec le déplacement de la source. Il existe une gamme de déplacement pour laquelle un système multi-canaux, optimisé au préalable, demeure optimal. Tant que le déplacement reste dans cette gamme, le système de contrôle est encore capable de créer une grande zone d’adaptation des fronts d’onde. Cette gamme peut être définie analytiquement en fonction de la longeur d’onde et de la configuration du système.

Fichiers supplémentaires

Publié-e

2001-03-01

Comment citer

1.
Guo J, Hodgson M, Pan J. Active control of an off-axis noise source. Canadian Acoustics [Internet]. 1 mars 2001 [cité 20 févr. 2025];29(1):13-7. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1354

Numéro

Vol. 29 No. 1 (2001)

Rubrique

Articles techniques

Licence

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