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
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Online Access:http://eprints.utm.my/id/eprint/50776/1/MuhamadSukriHadiMFKM2014.pdf
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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
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