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Intan Zaurah Mat Darus - One of the best experts on this subject based on the ideXlab platform.

  • AuCC - Active vibration control of Flexible Plate with free-free-clamped-clamped edges using genetic algorithm
    2013 Australian Control Conference, 2013
    Co-Authors: Muhamad Sukri Hadi, Intan Zaurah Mat Darus, Hanim Mohd Yatim
    Abstract:

    This paper presents an investigation of system modeling using genetic algorithm and active vibration control of Flexible Plate structure. The experimental rig was designed and fabricated with free-free-clamped-clamped edges boundary condition in this research. The experimental study was conducted using experimental rig complete with data acquisition and instrumentation system to collect the input-output data of Flexible Plate structure. This input-output data used to develop the system identification to obtain a dynamic model of Flexible Plate based on auto-regressive with exogenous input structure. The developed model using genetic algorithm were validated using mean squared error, one step-ahead prediction and correlation test. The fitness function of genetic algorithm is mean squared error between the measured and estimated outputs of Flexible Plate. The validations of developed model were presented in time domain and frequency domain. The modeling of Flexible Plate using genetic algorithm was used in active vibration control system design for vibration suppression on the Plate structure. The performance of developed controller assessed in term of spectral attenuation obtained for resonance modes.

  • Intelligence Swarm Model Optimization of Flexible Plate Structure System
    International review of automatic control, 2013
    Co-Authors: Muhamad Sukri Hadi, Intan Zaurah Mat Darus
    Abstract:

    This paper presents the performance of modeling the Flexible Plate structure with free-free-clamped-clamped (FFCC) edges boundary condition using conventional Recursive Least Squares (RLS) and evolutionary algorithm of Genetic Algorithm (GA) and Particle Swarm Optimization (PSO). The auto-regressive with exogenous (ARX) structure was used in this study to obtain the dynamic model of a Flexible Plate structure. Data acquisition and instrumentation system were designed and integrated with the experimental rig and several experimental procedures were conducted to acquire the input and output of the Flexible Plate. The input and output data collected from the experimental study were utilized to develop the model of the system. The 4000 data sets collected in the experiment were divided into two parts for training and testing. The first 3000 data sets were used to train the model developed while the last 1000 data sets were used to test the performance of thus developed model. All developed model using RLS, GA and PSO were validated using one step-ahead prediction (OSA), mean squared error (MSE) and correlation tests. Amongst all, it was found that PSO algorithm has performed better in term of lowest mean squared error achieved (0.00032719) as compared to conventional algorithm (RLS) and evolutionary algorithm (GA). However, by comparing in term of estimating the first mode of vibration which the dominant mode of structure, GA has performed better by presented the lowest percentage error (3.63 %). Besides that, it was found that, all estimated models using all methods proposed are comparable, acceptable and possible to be used as a platform of controller development and verification to suppress the vibration of the Flexible Plate structure.

  • Non-parametric modelling of a rectangular Flexible Plate structure
    Engineering Applications of Artificial Intelligence, 2012
    Co-Authors: Intan Zaurah Mat Darus, A. A. Al-khafaji
    Abstract:

    This research investigates the performance of dynamic modelling using non-parametric techniques for identification of a Flexible structure system for development of active vibration control. In this paper, the implementation details are described and the experimental studies conducted in this research are analysed. The input-output data of the system were first acquired through the experimental studies using National Instruments (NI) data acquisition system. A sinusoidal force was applied to excite the Flexible Plate and the dynamic response of the system was then investigated. Non-parametric modelling of the system were developed using several artificial intelligent methodologies namely Adaptive Elman Neural Networks (ENN), Backpropagation Multi-layer Perceptron Neural Networks (MLPNN) and Adaptive Neuro-Fuzzy Inference System (ANFIS). The performance of all these methodologies were compared and discussed. Finally, validation and verification of the obtained model was conducted using One Step Ahead (OSA) prediction, mean squared error (MSE) and correlation tests. The prediction ability of the model was further observed with unseen data. The results verified that the MLPNN converge to an optimum solution faster and the dynamic model obtained described the Flexible Plate structure very well. The non-parametric models of the Flexible Plate structure thus developed and validated will be used as the representation of the transfer function of the system in subsequent investigations for the development of active vibration control strategies for vibration suppression in Flexible structures.

  • Non-parametric modelling of a rectangular Flexible Plate structure
    Engineering Applications of Artificial Intelligence, 2012
    Co-Authors: Intan Zaurah Mat Darus, A. A. Al-khafaji
    Abstract:

    This research investigates the performance of dynamic modelling using non-parametric techniques for identification of a Flexible structure system for development of active vibration control. In this paper, the implementation details are described and the experimental studies conducted in this research are analysed. The inputoutput data of the system were first acquired through the experimental studies using National Instruments (NI) data acquisition system. A sinusoidal force was applied to excite the Flexible Plate and the dynamic response of the system was then investigated. Non-parametric modelling of the system were developed using several artificial intelligent methodologies namely Adaptive Elman Neural Networks (ENN), Backpropagation Multi-layer Perceptron Neural Networks (MLPNN) and Adaptive Neuro-Fuzzy Inference System (ANFIS). The performance of all these methodologies were compared and discussed. Finally, validation and verification of the obtained model was conducted using One Step Ahead (OSA) prediction, mean squared error (MSE) and correlation tests. The prediction ability of the model was further observed with unseen data. The results verified that the MLPNN converge to an optimum solution faster and the dynamic model obtained described the Flexible Plate structure very well. The non-parametric models of the Flexible Plate structure thus developed and validated will be used as the representation of the transfer function of the system in subsequent investigations for the development of active vibration control strategies for vibration suppression in Flexible structures. © 2011 Elsevier Ltd. All rights reserved.

  • Active vibration control of a Flexible Plate via Active Force Control strategy
    2011 4th International Conference on Mechatronics (ICOM), 2011
    Co-Authors: T. Zahidi A. Rahman, Intan Zaurah Mat Darus
    Abstract:

    Active Vibration Control (AVC) is well known nowadays as an optimum technique in vibration suppression of Flexible structures. Due to the complexity of the dynamics system of Flexible structures, vibration control process is quite a challenge. In this paper, the vibration control of Flexible structures using Active Force Control (AFC) method is studied, experimentally. The AVC-AFC controller design is implemented to a full clamped Flexible Plate system to evaluate its vibration attenuation performance. The system's dynamic model considering the collocated placement of the sensor and actuator is derived within the LabVIEW environment. The first five frequencies of vibration mode were obtained. The result indicated that the AVC-AFC possessed the ability to attenuate vibration of the Flexible structure.

Anthony D Lucey - One of the best experts on this subject based on the ideXlab platform.

  • The fluid-structure interaction of a spring-mounted cantilevered-free Flexible Plate in a uniform flow
    2020
    Co-Authors: Richard Howell, Anthony D Lucey
    Abstract:

    We study a new fundamental system comprising a cantilevered thin Flexible Plate aligned with a uniform flow in which its upstream end is attached to a spring mass system. This allows the entire system to oscillate perpendicularly to the flow direction as a result of the mounting’s dynamic interaction with the flow-induced oscillations of the Flexible Plate. The long-term goal of the study is the development of an energy harvesting system whereby the reciprocating motion of the support system can be tapped for energy production. Here we formulate and deploy a hybrid of theoretical and computational models for the system and map out its linear stability characteristics. Compared to a fixed cantilever, the introduction of the dynamic support system yields lower flutter-onset flow speeds and a reduction of the order of the mode that yields the critical flow speed, effects that are desirable for energy harvesting.

  • Stability of a Cantilevered Flexible Plate with Non-uniform Thickness in Viscous Channel Flow
    Fluid-Structure-Sound Interactions and Control, 2015
    Co-Authors: Julien Cisonni, Anthony D Lucey, Novak S. J. Elliott
    Abstract:

    Most studies analysing the instability of a cantilevered Flexible Plate in an axial flow are based on models assuming an inviscid flow and uniform properties for the Plate. However, for some applications, such as biomechanical fluid-structure interaction (FSI) systems, these simplifications may not be valid due the scale of the problems and the non-uniform geometric and mechanical properties of the soft tissue. In this study, a parametric investigation is conducted to determine the conditions leading to flutter instability of a cantilevered Flexible Plate with a non-uniform thickness immersed in a two-dimensional viscous channel flow. It is shown that, depending on the mass ratio, the thinning and thickening of the Plate free-end can stabilise or destabilise the FSI system and change the critical mode at instability onset.

  • Stability of a Spring-Mounted Cantilevered Flexible Plate in a Uniform Flow
    Fluid-Structure-Sound Interactions and Control, 2013
    Co-Authors: Richard Howell, Anthony D Lucey
    Abstract:

    A new system in fluid-structure interaction (FSI) is studied wherein a cantilevered thin Flexible Plate is aligned with a uniform flow with the upstream end of the Plate attached to a spring-mass system. This allows the entire system to oscillate in a direction perpendicular to that of the flow as a result of the dynamic interaction of the mounting with the flow-induced oscillations, or flutter, of the Flexible Plate. While a fundamental problem in FSI, the study of this variation on classical Plate flutter is also motivated by its potential as an energy-harvesting system in which the reciprocating motion of the support system would be tapped for energy production. In this paper, we formulate and deploy a hybrid of theoretical and computational models for the fluid-structure system and map out its linear stability characteristics. The computational model detailed is a novel fully implicit solution that is robust to spatial and temporal discretization. Compared to a fixed cantilever, the introduction of the dynamic support system is shown to yield lower flutter-onset flow speeds and a reduction of the order of the mode that yields the critical flow speed; these effects would be desirable for energy-harvesting applications.

  • Energy Production Characteristics of a Spring-Mounted Cantilevered-Free Flexible Plate in a Uniform Flow
    Volume 1: Symposia Parts A and B, 2012
    Co-Authors: Richard Howell, Anthony D Lucey
    Abstract:

    We study a new fundamental system that comprises a cantilevered thin Flexible Plate exactly aligned with the direction of a uniform flow in which the upstream end of the Flexible Plate is not fixed. Instead, it is attached to a spring-damper system that allows the entire system to oscillate perpendicularly to the flow direction as a result of the mounting’s dynamic interaction with the flow-induced oscillations of the Flexible Plate. This models an energy-harvesting system whereby the rate of energy extraction by the damper represents power generation from the kinetic-energy flux of the mean flow transferred via fluttering motions of the Flexible Plate to the motion of the mounting system. The two-dimensional modelling presented is an extension of the methods in [1,2] that mixed numerical simulation with eigenvalue analysis to study a fixed cantilevered Flexible Plate. The present system also includes a rigid inlet surface upstream of and fixed to the spring-mounted cantilever. Ideal flow is assumed wherein the rotationality of the boundary-layers is modelled by vortex elements on the solid-fluid interface and the imposition of the Kutta condition at the Plate’s trailing edge. The Euler-Bernoulli beam model is used for the structural dynamics. Results presented first show how the replacement of the fixed leading edge with an interactively oscillating mounting modify the well-known linear-stability characteristics of a fluttering Plate. The overall effect is that the critical flow speed for flutter onset is reduced and this is desirable for the present energy-harvesting application. This entails some subtle but important changes to the destabilisation mechanisms. The power generating potential of the fluid-structure interaction system is then illustrated. The present model of the dynamics of the Plate-support interaction has been simplified so as to demonstrate proof-of-concept; thus, a discussion of the way forward to a more complete model is presented to close the paper.Copyright © 2012 by ASME

  • motions of a cantilevered Flexible Plate in viscous channel flow driven by a constant pressure drop
    Communications in Numerical Methods in Engineering, 2009
    Co-Authors: George A Tetlow, Anthony D Lucey
    Abstract:

    An improved approach for studying the stability of a cantilevered Flexible Plate positioned within two-dimensional viscous channel flow is presented in the context of human upper-airway dynamics. Previous work has used constant inlet velocity conditions. Here we model a constant pressure drop that may better reflect inspiratory effort. Positioning of the Flexible Plate within the channel can also be varied. The constant pressure drop is imposed for each time step by computing appropriate inlet velocities. The Navier–Stokes equations are solved using an explicit finite-element method written specifically for the channel geometry within which the fully coupled Plate moves. The motion of the Plate, driven by the pressure-field, is modelled using classical thin-Plate mechanics with the addition of the fluid shear-stress-induced tension term. The investigation focuses on low-amplitude motions of the Flexible Plate (soft-palate) that, when unstable, may be the precursors to snoring and airway blockage during sleep. We show that imposing constant inlet velocity conditions generates over-predictions of energy transfer between flow and Flexible Plate during inhalation. Finally, we show that offsetting the Flexible Plate within the channel leads to a reduction in oscillation frequency and a significant change to its energy interaction with the fluid flow. Copyright © 2009 John Wiley & Sons, Ltd.

Mingcong Deng - One of the best experts on this subject based on the ideXlab platform.

  • Operator-based robust nonlinear free vibration control of a Flexible Plate with unknown input nonlinearity
    IEEE CAA Journal of Automatica Sinica, 2020
    Co-Authors: Mingcong Deng
    Abstract:

    In this paper, a robust nonlinear free vibration control design using an operator based robust right coprime factorization approach is considered for a Flexible Plate with unknown input nonlinearity. With considering the effect of unknown input nonlinearity from the piezoelectric actuator, operator based controllers are designed to guarantee the robust stability of the nonlinear free vibration control system. Simultaneously, for ensuring the desired tracking performance and reducing the effect of unknown input nonlinearity, operator based tracking compensator and estimation structure are given, respectively. Finally, both simulation and experimental results are shown to verify the effectiveness of the proposed control scheme.

  • Operator-based nonlinear free vibration control of a Flexible Plate with sudden perturbations:
    Transactions of the Institute of Measurement and Control, 2019
    Co-Authors: Mingcong Deng
    Abstract:

    In this paper, a new nonlinear vibration control scheme using piezoelectric actuator is proposed for a Flexible Plate with a free vibration and sudden perturbations. First, the effect of hysteresis...

  • Operator-Based Robust Nonlinear Forced Vibration Control of a Flexible Plate
    2019 IEEE 2nd International Conference on Renewable Energy and Power Engineering (REPE), 2019
    Co-Authors: Mingcong Deng
    Abstract:

    In this paper, a robust nonlinear forced vibration control design using an operator based robust right coprime factorization approach is considered for a forced vibration control on a Flexible Plate with piezoelectric actuators. With considering the effect of hysteresis nonlinearity from the piezoelectric actuators, operator based controllers are designed to guarantee the stability of the nonlinear forced vibration control system. Simultaneously, for controlling the vibration of the Flexible Plate and ensuring the desired vibration control performance, the operator-based disturbance compensation method is considered. Finally, the effectiveness of the proposed nonlinear control system is confirmed by simulation results.

  • Robust Nonlinear Forced Vibration Control of a Flexible Plate Based on Operator Theory
    2018 International Conference on Advanced Mechatronic Systems (ICAMechS), 2018
    Co-Authors: Mingcong Deng
    Abstract:

    In this paper, robust nonlinear forced vibration control method based on operator theory for a Flexible Plate with piezoelectric actuators is proposed. In the interest of control effect from the piezoelectric actuators to a Flexible Plate determine the optimal position, the FEM(Finite Element Method) is used. The hysteresis nonlinearity of the piezoelectric actuators is expressed using P-I(Prandtl-Ishlinskii) model. The model of Flexible Plate is shown. In order to guarantee the stability of a nonlinear control system, the method of guarantee the stability based on the operator theory which is one of the nonlinear control system design approaches is shown. And an operator based method for removal of the disturbance is proposed. Finally, the validity of the designed control system by the simulation results is shown.

  • Operator based robust two loop nonlinear free vibration control of a Flexible Plate
    2016 IEEE International Conference on Mechatronics and Automation, 2016
    Co-Authors: Mingcong Deng
    Abstract:

    Operator based robust two loop nonlinear free vibration control of a Flexible Plate is considered in this paper. A model of the Flexible Plate taking into account the hysteresis from the piezoelectric actuators of the Plate is given. Robust two loop nonlinear free vibration control scheme is proposed for the Plate using operator theory, also, the tracking problem is shown. The effectiveness of the proposed nonlinear control system is confirmed by simulation results.

M. O. Tokhi - One of the best experts on this subject based on the ideXlab platform.

  • Vibration Suppression of Flexible Plate Structures Using Swarm and Genetic Optimization Techniques
    Journal of Low Frequency Noise Vibration and Active Control, 2020
    Co-Authors: Sabariah Julai, M. O. Tokhi
    Abstract:

    This paper presents the development of an active vibration control mechanism using genetic algorithm and particle swarm optimization. The approaches are realized with single-input single-output and single-input multiple-output control configurations in a Flexible Plate structure with all edges clamped. Simulations are carried out with different disturbance signal types, namely random, pseudo random binary sequence, and finite-duration step. The control design comprises a direct minimization of the error (observed) signal by searching the optimal locations of the detector and secondary source, along with the controller parameters. The algorithms are formulated with an objective function based on mean square of the observed vibration. In this manner, knowledge of the input/output characterization of the system is not required for design of the controller. The performance of the system is assessed and analyzed both in the time and frequency domains and it is demonstrated that the proposed scheme reduces vibration of the Flexible Plate significantly.

  • Active vibration control of a Flexible Plate structure using particle swarm optimization
    2010 IEEE 9th International Conference on Cyberntic Intelligent Systems, 2010
    Co-Authors: Sabariah Julai, M. O. Tokhi, M. Mohamad, Abd. I. Latiff
    Abstract:

    This paper presents investigations of modeling the Flexible Plate structures using particle swarm optimization (PSO) and active vibration control (AVC) of such structures. The optimization technique is utilized to obtain a dynamic model of a Flexible Plate structure based on auto-regressive with exogenous (ARX) input structure. The structure is subjected to two different disturbance signal types, namely random, and finite duration step. The fitness function for the PSO is the mean-squared error (MSE) between the measured and estimated outputs of the Plate. The validation of the algorithm is presented in both time and frequency domains. The developed PSO modeling approach is used for AVC system design to suppress the vibration of the Flexible Plate. The performance of the controller is assessed in terms of level of attenuation achieved in the power spectral density (PSD) of the observed signal.

  • SISO and SIMO active vibration control of a Flexible Plate structure using real-coded genetic algorithm
    2010 IEEE 9th International Conference on Cyberntic Intelligent Systems, 2010
    Co-Authors: Sabariah Julai, M. O. Tokhi
    Abstract:

    This paper presents the development of an active vibration control (AVC) mechanism using real-coded genetic algorithm (RCGA) optimization. The approach is realized with single-input single-output (SISO) and single-input multiple-output (SIMO) control configurations in a Flexible Plate structure. A simulation environment characterizing a thin, square Plate, with all edges clamped, is developed using the finite difference (FD) method as a platform for test and verification of the developed control approach. Tests are carried out with different disturbance signal types, namely random and finite duration step. The control design comprises a direct optimization of the controller parameters based on minimization of the error (observed) signal. The RCGA is formulated with a fitness function based on mean square of the observed vibration. The performance of the system is assessed and analysed both in the time and frequency domains and it is demonstrated that the proposed scheme reduces vibration of the Flexible Plate significantly.

  • EMS - Active Vibration Control of a Flexible Plate Structure Using Ant System Algorithm
    2009 Third UKSim European Symposium on Computer Modeling and Simulation, 2009
    Co-Authors: Sabariah Julai, M. O. Tokhi, Salihatun Md Salleh
    Abstract:

    This paper presents investigations into modeling and active vibration control (AVC) of a Flexible Plate structure using continuous ant system algorithm (CASA) such structures. The optimization technique is utilized to obtain a dynamic model of a Flexible Plate structure based on auto-regressive with exogenous (ARX) input model structure. The Flexible Plate structure is subjected to two different disturbance signal types, namely random, and finite duration step. The fitness function for the CASA is the mean-squared error (MSE) between the measured and estimated outputs of the Plate. The validation of the algorithm is presented in both time and frequency domains. The developed CASA modeling approach is used for AVC system design to suppress the vibration of the Flexible Plate. The performance of the controller is assessed in terms of level of attenuation achieved in the power spectral density of the observed signal.

  • Parametric modelling of Flexible Plate structures using real-coded genetic algorithms
    2009 17th Mediterranean Conference on Control and Automation, 2009
    Co-Authors: Sabariah Julai, M. O. Tokhi
    Abstract:

    This paper presents parametric modelling of Flexible Plate structures using real-coded genetic algorithms (RCGA). The global optimization technique of RCGA is utilized to obtain a dynamic model of a Flexible Plate structure based on one-step-ahead (OSA) prediction. The structure is subjected to three different disturbance signal types, namely random, pseudo random binary sequence (PRBS), and finite duration step. The fitness function for the RCGA optimization is the mean-squared error (MSE) between the measured and estimated outputs of the Plate. The validation of the algorithm is presented in both time and frequency domains. The developed RCGA modelling approach will be used for active vibration control systems design and development in future work.

Sabariah Julai - One of the best experts on this subject based on the ideXlab platform.

  • Vibration Suppression of Flexible Plate Structures Using Swarm and Genetic Optimization Techniques
    Journal of Low Frequency Noise Vibration and Active Control, 2020
    Co-Authors: Sabariah Julai, M. O. Tokhi
    Abstract:

    This paper presents the development of an active vibration control mechanism using genetic algorithm and particle swarm optimization. The approaches are realized with single-input single-output and single-input multiple-output control configurations in a Flexible Plate structure with all edges clamped. Simulations are carried out with different disturbance signal types, namely random, pseudo random binary sequence, and finite-duration step. The control design comprises a direct minimization of the error (observed) signal by searching the optimal locations of the detector and secondary source, along with the controller parameters. The algorithms are formulated with an objective function based on mean square of the observed vibration. In this manner, knowledge of the input/output characterization of the system is not required for design of the controller. The performance of the system is assessed and analyzed both in the time and frequency domains and it is demonstrated that the proposed scheme reduces vibration of the Flexible Plate significantly.

  • Parametric Modelling of Flexible Plate Structures Using Ant Colony Optimization
    2020
    Co-Authors: Nsaa Jalil, Sabariah Julai, R Ramli
    Abstract:

    Background: This paper presents parametric modelling of Flexible Plate structures using ant colony optimization (ACO). The global optimization technique of ACO is utilized to obtain a dynamic model of a Flexible Plate structure based on one-step-ahead (OSA) prediction. Objective: The structure is subjected to three different disturbance signal types, namely random, pseudo random binary sequence (PRBS), and finite duration step. The fitness function for the ACO optimization is the mean-squared error (MSE) between the measured and estimated outputs of the Plate. Results: The validation of the algorithm is presented in both time and frequency domains. The developed ACO modelling approach will be used for active vibration control systems design and development in future work. Conclusion The performance of ACO2 has been shown to outperform ACO1 in minimizing the prediction error, resulting in a good level of accuracy of the estimated model.

  • Parametric modelling of Flexible Plate structures using continuous ant colony optimization
    Journal of Simulation, 2015
    Co-Authors: Nsaa Jalil, Sabariah Julai, R Ramli
    Abstract:

    This paper presents parametric modelling of Flexible Plate structures using ant colony optimization (ACO). The global optimization technique of ACO is utilized to obtain a dynamic model of a Flexible Plate structure based on one-step-ahead prediction. In this paper a proposed ACO with roulette wheel selection known as ACO2 is compared with a previous modified ACO which is denoted as ACO1. The comparison is to recognize the optimum performance and to enhance the fast convergence. The Flexible Plate structure is subjected to random disturbance signal types. Fitness function for the ACO optimization is the mean-squared error between the measured and estimated output of the Plate. The validation of the algorithm is presented in both time and frequency domains. Simulation results show that the proposed approachis better and has a fast convergence rate than ACO1. The developed ACO modelling approach will be used for active vibration control systems design and development in future work.

  • Active vibration control of a Flexible Plate structure using particle swarm optimization
    2010 IEEE 9th International Conference on Cyberntic Intelligent Systems, 2010
    Co-Authors: Sabariah Julai, M. O. Tokhi, M. Mohamad, Abd. I. Latiff
    Abstract:

    This paper presents investigations of modeling the Flexible Plate structures using particle swarm optimization (PSO) and active vibration control (AVC) of such structures. The optimization technique is utilized to obtain a dynamic model of a Flexible Plate structure based on auto-regressive with exogenous (ARX) input structure. The structure is subjected to two different disturbance signal types, namely random, and finite duration step. The fitness function for the PSO is the mean-squared error (MSE) between the measured and estimated outputs of the Plate. The validation of the algorithm is presented in both time and frequency domains. The developed PSO modeling approach is used for AVC system design to suppress the vibration of the Flexible Plate. The performance of the controller is assessed in terms of level of attenuation achieved in the power spectral density (PSD) of the observed signal.

  • SISO and SIMO active vibration control of a Flexible Plate structure using real-coded genetic algorithm
    2010 IEEE 9th International Conference on Cyberntic Intelligent Systems, 2010
    Co-Authors: Sabariah Julai, M. O. Tokhi
    Abstract:

    This paper presents the development of an active vibration control (AVC) mechanism using real-coded genetic algorithm (RCGA) optimization. The approach is realized with single-input single-output (SISO) and single-input multiple-output (SIMO) control configurations in a Flexible Plate structure. A simulation environment characterizing a thin, square Plate, with all edges clamped, is developed using the finite difference (FD) method as a platform for test and verification of the developed control approach. Tests are carried out with different disturbance signal types, namely random and finite duration step. The control design comprises a direct optimization of the controller parameters based on minimization of the error (observed) signal. The RCGA is formulated with a fitness function based on mean square of the observed vibration. The performance of the system is assessed and analysed both in the time and frequency domains and it is demonstrated that the proposed scheme reduces vibration of the Flexible Plate significantly.