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Active vibration control of a doubly-curved panel under pressurization

Active vibration control of a doubly-curved panel under pressurization
Active vibration control of a doubly-curved panel under pressurization
This study focuses on the control of doubly-curved panels which occur in aircrafts due to the deflection of fuselage panels during lateral pressure loading. This paper describes experimental work conducted toward the implementation of a feedback velocity control system on a pressurised panel of varying curvature in both the x and y directions. A thin rectangular aluminium panel was clamped to an airtight, rigid-walled enclosure and the curvature of the panel was varied through changing the interior static pressure. An electrodynamic proof-mass actuator and collocated accelerometer were implemented on the panel and in order to ensure stability and improve the performance of the feedback controller, a compensation filter was designed and added to the system. The attenuation in the structural response was investigated for increasing curvature. Current offline results show that effective control can be achieved for low levels of curvature. Furthermore, the compensated controller is robust to changes in curvature and the optimal gain of the compensated system remains more or less independent of the curvature level. However, increasing the curvature further causes modal clustering near the panel’s ring frequency which reduces the performance of the controller.
Nourzad, Delphine
e91960db-2540-483c-8e46-1797a3524caa
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Nourzad, Delphine
e91960db-2540-483c-8e46-1797a3524caa
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Ghandchi-Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96

Nourzad, Delphine, Elliott, Stephen, Ghandchi-Tehrani, Maryam and Rustighi, Emiliano (2012) Active vibration control of a doubly-curved panel under pressurization. ICSV19: The 19th International Congress on Sound and Vibration, Vilnius, Lithuania. 08 - 12 Jul 2012. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

This study focuses on the control of doubly-curved panels which occur in aircrafts due to the deflection of fuselage panels during lateral pressure loading. This paper describes experimental work conducted toward the implementation of a feedback velocity control system on a pressurised panel of varying curvature in both the x and y directions. A thin rectangular aluminium panel was clamped to an airtight, rigid-walled enclosure and the curvature of the panel was varied through changing the interior static pressure. An electrodynamic proof-mass actuator and collocated accelerometer were implemented on the panel and in order to ensure stability and improve the performance of the feedback controller, a compensation filter was designed and added to the system. The attenuation in the structural response was investigated for increasing curvature. Current offline results show that effective control can be achieved for low levels of curvature. Furthermore, the compensated controller is robust to changes in curvature and the optimal gain of the compensated system remains more or less independent of the curvature level. However, increasing the curvature further causes modal clustering near the panel’s ring frequency which reduces the performance of the controller.

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More information

Published date: 8 July 2012
Venue - Dates: ICSV19: The 19th International Congress on Sound and Vibration, Vilnius, Lithuania, 2012-07-08 - 2012-07-12
Related URLs:
Organisations: Dynamics Group, Signal Processing & Control Grp

Identifiers

Local EPrints ID: 355220
URI: http://eprints.soton.ac.uk/id/eprint/355220
PURE UUID: ed7a1283-fb7c-410e-8cae-be33baa2a5f9
ORCID for Emiliano Rustighi: ORCID iD orcid.org/0000-0001-9871-7795

Catalogue record

Date deposited: 21 Aug 2013 10:45
Last modified: 14 Mar 2024 14:30

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Contributors

Author: Delphine Nourzad
Author: Stephen Elliott

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