Active control of high-frequency vibration: optimisation using the hybrid modelling method

Abdul Muthalif, Asan Gani and Langley, Robin S (2012) Active control of high-frequency vibration: optimisation using the hybrid modelling method. Journal of Sound and Vibration, 331 (13). pp. 2969-2983. ISSN 0022-460X

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Abstract

This work presents active control of high-frequency vibration using skyhook dampers. The choice of the damper gain and its optimal location is crucial for the effective implementation of active vibration control. In vibration control, certain sensor/actuator locations are preferable for reducing structural vibration while using minimum control effort. In order to perform optimisation on a general built-up structure to control vibration, it is necessary to have a good modelling technique to predict the performance of the controller. The present work exploits the hybrid modelling approach, which combines the finite element method (FEM) and statistical energy analysis (SEA) to provide efficient response predictions at medium to high frequencies. The hybrid method is implemented here for a general network of plates, coupled via springs, to allow study of a variety of generic control design problems. By combining the hybrid method with numerical optimisation using a genetic algorithm, optimal skyhook damper gains and locations are obtained. The optimal controller gain and location found from the hybrid method are compared with results from a deterministic modelling method. Good agreement between the results is observed, whereas results from the hybrid method are found in a significantly reduced amount of time.

Item Type:	Article (Journal)
Additional Information:	3352/23500
Uncontrolled Keywords:	Active control; Active vibration controls; Built-up structures; Control effort; Finite element methods (FEM); General networks; Generic control; High frequency; High-frequency vibrations; Hybrid method; Hybrid modelling; Modelling method; Modelling techniques; Optimal controller; Optimal locations; Optimisations; Response prediction; Sky-hook; Statistical energy analysis; Structural vibrations
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA630 Structural engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User:	Ir. Ts. Dr Asan Gani Abdul Muthalif
Date Deposited:	15 Jun 2012 08:22
Last Modified:	15 Jun 2012 08:22
URI:	http://irep.iium.edu.my/id/eprint/23500

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