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Sensors 2013, 13(2), 2131-2147; doi:10.3390/s130202131
Article

Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control

1
, 2
, 3
 and 3,*
Received: 22 January 2013; in revised form: 30 January 2013 / Accepted: 30 January 2013 / Published: 6 February 2013
(This article belongs to the Section Physical Sensors)
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Abstract: In this work, active vibration control of an underwater cylindrical shell structure was investigated, to suppress structural vibration and structure-borne noise in water. Finite element modeling of the submerged cylindrical shell structure was developed, and experimentally evaluated. Modal reduction was conducted to obtain the reduced system equation for the active feedback control algorithm. Three Macro Fiber Composites (MFCs) were used as actuators and sensors. One MFC was used as an exciter. The optimum control algorithm was designed based on the reduced system equations. The active control performance was then evaluated using the lab scale underwater cylindrical shell structure. Structural vibration and structure-borne noise of the underwater cylindrical shell structure were reduced significantly by activating the optimal controller associated with the MFC actuators. The results provide that active vibration control of the underwater structure is a useful means to reduce structure-borne noise in water.
Keywords: underwater cylindrical shell structure; macro fiber composite actuator; optimal controller; structural vibration control; structure-borne noise underwater cylindrical shell structure; macro fiber composite actuator; optimal controller; structural vibration control; structure-borne noise
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Kim, H.S.; Sohn, J.W.; Jeon, J.; Choi, S.-B. Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control. Sensors 2013, 13, 2131-2147.

AMA Style

Kim HS, Sohn JW, Jeon J, Choi S-B. Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control. Sensors. 2013; 13(2):2131-2147.

Chicago/Turabian Style

Kim, Heung S.; Sohn, Jung W.; Jeon, Juncheol; Choi, Seung-Bok. 2013. "Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control." Sensors 13, no. 2: 2131-2147.



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