A comparison of actuation strategies in a combined active-passive absorption control system
A comparison of actuation strategies in a combined active-passive absorption control system
This paper presents a comparative analysis of different actuation strategies in a combined active-passive absorption system for broadband noise control. The system consists of a multi-layered structure with a porous layer, a micro-perforated panel (MPP), and an air cavity. An active structural acoustic control system is implemented to work in combination with the passive measures, allowing the system to maintain absorption performance over a wide frequency range. The presented study investigates the effectiveness of actuating the MPP versus actuating the backplate behind the air cavity, for different passive treatment configurations. The study was performed using numerical simulations based on the Finite Element Method (FEM). A wave-based active control strategy was used to minimize the reflected wave, with the electrical power consumption kept constant across all active-passive design configurations to allow comparison. The results indicate significant differences in absorption performance depending on the location of actuation and the configuration of the passive layers. This highlights the need for careful tuning of both passive and active design parameters in a combined active-passive control treatment.
Nikolaou, Charalampos
e4751a9f-0724-4f3c-b308-9d1bee5c9c08
Langfeldt, Felix
2bf86877-f2cd-4c35-be0f-e38a718a915c
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
October 2025
Nikolaou, Charalampos
e4751a9f-0724-4f3c-b308-9d1bee5c9c08
Langfeldt, Felix
2bf86877-f2cd-4c35-be0f-e38a718a915c
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Nikolaou, Charalampos, Langfeldt, Felix and Cheer, Jordan
(2025)
A comparison of actuation strategies in a combined active-passive absorption control system.
Noise and Vibration Emerging Methods, , Garmisch-Partenkirchen, Germany.
06 - 08 May 2025.
13 pp
.
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Conference or Workshop Item
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Abstract
This paper presents a comparative analysis of different actuation strategies in a combined active-passive absorption system for broadband noise control. The system consists of a multi-layered structure with a porous layer, a micro-perforated panel (MPP), and an air cavity. An active structural acoustic control system is implemented to work in combination with the passive measures, allowing the system to maintain absorption performance over a wide frequency range. The presented study investigates the effectiveness of actuating the MPP versus actuating the backplate behind the air cavity, for different passive treatment configurations. The study was performed using numerical simulations based on the Finite Element Method (FEM). A wave-based active control strategy was used to minimize the reflected wave, with the electrical power consumption kept constant across all active-passive design configurations to allow comparison. The results indicate significant differences in absorption performance depending on the location of actuation and the configuration of the passive layers. This highlights the need for careful tuning of both passive and active design parameters in a combined active-passive control treatment.
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Nikolaou et al. - 2025 - A comparison of actuation strategies in a combined active-passive absorption control system
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Published date: October 2025
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Noise and Vibration Emerging Methods, , Garmisch-Partenkirchen, Germany, 2025-05-06 - 2025-05-08
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Local EPrints ID: 506224
URI: http://eprints.soton.ac.uk/id/eprint/506224
PURE UUID: 55635e38-e5bb-48be-ae4c-da0019ca4c49
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Date deposited: 30 Oct 2025 17:44
Last modified: 31 Oct 2025 03:00
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Author:
Charalampos Nikolaou
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