Decentralized feedback damping with distributed control applied to ducts and anechoic chambers

A. P. Berkhoff*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

This paper considers techniques to improve stability robustness and performance robustness of controllers in ducts and anechoic chambers. Aspects that are considered are the stability of transfer functions that are obtained from system identification, the size of the quiet zone, and reduction of controller complexity by limiting the number of control parameters. The methods that are considered in this paper are decentralized acoustic feedback to dampen resonances, directional sensors for a larger and predictable region of silence, current drive with velocity feedback, and distributed control. For loudspeakers a feedback structure is proposed which consists of two nested feedback loops. The methods are numerically evaluated for controlling reflections to realize anechoic properties in a duct and a full-size anechoic chamber.

Original languageEnglish
Title of host publicationProceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics
EditorsW. Desmet, B. Pluymers, D. Moens, J. del Fresno Zarza
PublisherKatholieke Universiteit Leuven
Pages40-54
Number of pages15
ISBN (Electronic)9789082893175
Publication statusPublished - 2024
Event31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024 - Leuven, Belgium
Duration: 9 Sept 202411 Sept 2024
Conference number: 31

Conference

Conference31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024
Abbreviated titleISMA 2024
Country/TerritoryBelgium
CityLeuven
Period9/09/2411/09/24

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