Robust vibration control of flexible panel:modeling and simulation
Purpose – This paper aims to develop a robust controller to control vibration of a thin plate attached with two piezoelectric patches in the presence of uncertainties in the mass of the plate. The main goal of this study is to tackle dynamic perturbation that could lead to modelling error in flexibl...
| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
Emerald Group Publishing Ltd.
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/59523/ http://irep.iium.edu.my/59523/ http://irep.iium.edu.my/59523/ http://irep.iium.edu.my/59523/1/J-2017-WJE-Robust%20Vibration%20Control-%20Aalya-published.pdf http://irep.iium.edu.my/59523/7/59523_Robust%20vibration%20control%20of%20flexible_scopus.pdf |
| Summary: | Purpose – This paper aims to develop a robust controller to control vibration of a thin plate attached with two piezoelectric patches in the presence
of uncertainties in the mass of the plate. The main goal of this study is to tackle dynamic perturbation that could lead to modelling error in flexible
structures. The controller is designed to suppress first and second modal vibrations.
Design/methodology/approach – Out of various robust control strategies,
�-synthesiscontrollerdesignalgorithmhasbeenusedforactive
vibration control of a simply supported thin place excited and actuated using two piezoelectric patches. Parametric uncertainty in the system is taken
into account so that the robust system will be achieved by maximizing the complex stability radius of the closed-loop system. Effectiveness of the
designed controller is validated through robust stability and performance analysis.
Findings – Results obtained from numerical simulation indicate that implementation of the designed controller can effectively suppress the vibration
of the system at the first and second modal frequencies by 98.5 and 88.4 per cent, respectively, despite the presence of structural uncertainties. The
designed controller has also shown satisfactory results in terms of robustness and performance.
Originality/value – Although vibration control in designing any structural system has been an active topic for decades, Ordinary fixed
controllers designed based on nominal parameters do not take into account the uncertainties present in and around the system and hence
lose their effectiveness when subjected to uncertainties. This paper fulfills an identified need to design a robust control system that
accommodates uncertainties. |
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