Robust vibration control of flexible panel:modeling and simulation

Banu, Aalya and Abdul Muthalif, Asan Gani (2017) Robust vibration control of flexible panel:modeling and simulation. World Journal of Engineering, 14 (5). pp. 433-442. ISSN 1708-5284

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Abstract

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.

Item Type:	Article (Journal)
Additional Information:	3352/59523
Uncontrolled Keywords:	Modal frequencies, -synthesis, Piezoelectric actuator, Robust control system, Vibration control
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Ir. Ts. Dr Asan Gani Abdul Muthalif
Date Deposited:	21 Nov 2017 17:28
Last Modified:	20 Dec 2017 16:06
URI:	http://irep.iium.edu.my/id/eprint/59523

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