Active control of high frequency vibration in uncertain structures

The active suppression of structural vibration is normally achieved by either feedforward or feedback control. In the absence of a suitable reference signal feedforward control cannot be employed and feedback control is the only viable approach. Conventional feedback control algorithms (e.g. LQR...

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Main Authors:	Abdul Muthalif, Asan Gani, Langley, Robin S
Format:	Conference or Workshop Item
Language:	English
Published:	2006
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General)
Online Access:	http://irep.iium.edu.my/24596/ http://irep.iium.edu.my/24596/ http://irep.iium.edu.my/24596/1/ICSV13-FINAL.pdf

id	iium-24596
recordtype	eprints
spelling	iium-245962013-08-22T01:51:25Z http://irep.iium.edu.my/24596/ Active control of high frequency vibration in uncertain structures Abdul Muthalif, Asan Gani Langley, Robin S T Technology (General) TA Engineering (General). Civil engineering (General) The active suppression of structural vibration is normally achieved by either feedforward or feedback control. In the absence of a suitable reference signal feedforward control cannot be employed and feedback control is the only viable approach. Conventional feedback control algorithms (e.g. LQR and LQG) are designed on the basis of a mathematical model of the system and ideally the performance of the system should be robust against uncertainties in this model. The aim of this paper is to numerically investigate the robustness of LQR and LQG algorithms by designing the controller for a nominal system, and then assessing (via Monte Carlo simulation) the effects of uncertainties in the system. The ultimate concern is with the control of high frequency vibrations, where the short wavelength of the structural deformation induces a high sensitivity to imperfection. It is found that standard algorithms such as LQR and LQG are generally unfeasible for this case. This leads to a consideration of design strategies for the robust active control of high frequency vibrations. The system chosen for the numerical simulation concerns two coupled plates, which are randomized by the addition of point masses at random locations. 2006 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/24596/1/ICSV13-FINAL.pdf Abdul Muthalif, Asan Gani and Langley, Robin S (2006) Active control of high frequency vibration in uncertain structures. In: The 13th International Congress on Sound and Vibration , 2-6 July 2006, Vienna, Austria. http://icsv13.tuwien.ac.at/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	T Technology (General) TA Engineering (General). Civil engineering (General)
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) Abdul Muthalif, Asan Gani Langley, Robin S Active control of high frequency vibration in uncertain structures
description	The active suppression of structural vibration is normally achieved by either feedforward or feedback control. In the absence of a suitable reference signal feedforward control cannot be employed and feedback control is the only viable approach. Conventional feedback control algorithms (e.g. LQR and LQG) are designed on the basis of a mathematical model of the system and ideally the performance of the system should be robust against uncertainties in this model. The aim of this paper is to numerically investigate the robustness of LQR and LQG algorithms by designing the controller for a nominal system, and then assessing (via Monte Carlo simulation) the effects of uncertainties in the system. The ultimate concern is with the control of high frequency vibrations, where the short wavelength of the structural deformation induces a high sensitivity to imperfection. It is found that standard algorithms such as LQR and LQG are generally unfeasible for this case. This leads to a consideration of design strategies for the robust active control of high frequency vibrations. The system chosen for the numerical simulation concerns two coupled plates, which are randomized by the addition of point masses at random locations.
format	Conference or Workshop Item
author	Abdul Muthalif, Asan Gani Langley, Robin S
author_facet	Abdul Muthalif, Asan Gani Langley, Robin S
author_sort	Abdul Muthalif, Asan Gani
title	Active control of high frequency vibration in uncertain structures
title_short	Active control of high frequency vibration in uncertain structures
title_full	Active control of high frequency vibration in uncertain structures
title_fullStr	Active control of high frequency vibration in uncertain structures
title_full_unstemmed	Active control of high frequency vibration in uncertain structures
title_sort	active control of high frequency vibration in uncertain structures
publishDate	2006
url	http://irep.iium.edu.my/24596/ http://irep.iium.edu.my/24596/ http://irep.iium.edu.my/24596/1/ICSV13-FINAL.pdf
first_indexed	2023-09-18T20:36:52Z
last_indexed	2023-09-18T20:36:52Z
_version_	1777409104197713920

Active control of high frequency vibration in uncertain structures

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