Modelling and active control of flexible plate using evolutionary methods

Flexible structures are very much in demand in the aerospace, marine, civil engineering and robotics industries. Controlling unwanted vibrations on these flexible plate structures is very important to maintain the performance of the structures. To design and develop a good controller, the dynamics o...

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Main Author:	Hadi, Muhamad Sukri
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/50776/1/MuhamadSukriHadiMFKM2014.pdf
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id	my-utm-ep.50776
record_format	uketd_dc
spelling	my-utm-ep.507762020-07-12T03:44:18Z Modelling and active control of flexible plate using evolutionary methods 2014-03 Hadi, Muhamad Sukri TJ Mechanical engineering and machinery Flexible structures are very much in demand in the aerospace, marine, civil engineering and robotics industries. Controlling unwanted vibrations on these flexible plate structures is very important to maintain the performance of the structures. To design and develop a good controller, the dynamics of the plate must be modelled adequately. This thesis presents the development of a dynamic characterization of a flexible plate structure using system identification techniques via evolutionary methods and a proportional-integral-derivative (PID) controller for vibration suppression of a flexible plate. Initially, a flexible plate experimental rig was designed and fabricated with a clamped-clamped-free-free (CCFF) boundary condition. Then, data acquisition and instrumentation system were designed and integrated with the rig. Several experimental procedures were conducted to acquire the input and output data of the flexible plate. The input-output data collected from experiments were utilized to develop the model of the system. Several parametric modeling approaches were devised using linear auto regressive with exogenous (ARX) model structure which included the least square (LS), recursive least square (RLS), genetic algorithm (GA) and particle swarm optimization (PSO) techniques. The developed models were validated using one step-ahead (OSA) prediction, mean squared error (MSE) and correlation tests. Amongst all, it was found that the LS algorithm performed better in terms of achieving the lowest MSE as compared to the RLS, GA and PSO performance. Besides, all developed models performed well in estimating the first mode of vibration which is the dominant mode of the structure. It was also found that GA based active vibration control (AVC) using auto tuning method is the best proposed controller for vibration suppression of flexible plate with CCFF edge boundary condition with the highest attenuation value obtained for the first mode of vibration is 112.93 dB. 2014-03 Thesis http://eprints.utm.my/id/eprint/50776/ http://eprints.utm.my/id/eprint/50776/1/MuhamadSukriHadiMFKM2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:89173 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Hadi, Muhamad Sukri Modelling and active control of flexible plate using evolutionary methods
description	Flexible structures are very much in demand in the aerospace, marine, civil engineering and robotics industries. Controlling unwanted vibrations on these flexible plate structures is very important to maintain the performance of the structures. To design and develop a good controller, the dynamics of the plate must be modelled adequately. This thesis presents the development of a dynamic characterization of a flexible plate structure using system identification techniques via evolutionary methods and a proportional-integral-derivative (PID) controller for vibration suppression of a flexible plate. Initially, a flexible plate experimental rig was designed and fabricated with a clamped-clamped-free-free (CCFF) boundary condition. Then, data acquisition and instrumentation system were designed and integrated with the rig. Several experimental procedures were conducted to acquire the input and output data of the flexible plate. The input-output data collected from experiments were utilized to develop the model of the system. Several parametric modeling approaches were devised using linear auto regressive with exogenous (ARX) model structure which included the least square (LS), recursive least square (RLS), genetic algorithm (GA) and particle swarm optimization (PSO) techniques. The developed models were validated using one step-ahead (OSA) prediction, mean squared error (MSE) and correlation tests. Amongst all, it was found that the LS algorithm performed better in terms of achieving the lowest MSE as compared to the RLS, GA and PSO performance. Besides, all developed models performed well in estimating the first mode of vibration which is the dominant mode of the structure. It was also found that GA based active vibration control (AVC) using auto tuning method is the best proposed controller for vibration suppression of flexible plate with CCFF edge boundary condition with the highest attenuation value obtained for the first mode of vibration is 112.93 dB.
format	Thesis
qualification_level	Master's degree
author	Hadi, Muhamad Sukri
author_facet	Hadi, Muhamad Sukri
author_sort	Hadi, Muhamad Sukri
title	Modelling and active control of flexible plate using evolutionary methods
title_short	Modelling and active control of flexible plate using evolutionary methods
title_full	Modelling and active control of flexible plate using evolutionary methods
title_fullStr	Modelling and active control of flexible plate using evolutionary methods
title_full_unstemmed	Modelling and active control of flexible plate using evolutionary methods
title_sort	modelling and active control of flexible plate using evolutionary methods
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/50776/1/MuhamadSukriHadiMFKM2014.pdf
_version_	1747817531971731456

Modelling and active control of flexible plate using evolutionary methods

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