On active vibration isolation of floating raft system

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)391-406
Journal / PublicationJournal of Sound and Vibration
Volume285
Issue number1-2
Publication statusPublished - 6 Jul 2005

Abstract

A novel analytical active-passive model of floating rafts, a type of special isolation structures which present high-level vibration isolation and are widely used in large ships and submarines particularly, is developed for the first time. Then the mobility matrices of the subsystems are derived, thereby a general mathematical description of this combined active-passive model is realized. Based on the model, the concepts and relationships of machine control, raft control and full control are extensively discussed. The solution of the power flow transmitted into the foundation is obtained, and power transmission characteristics of the system are investigated under different control types when minimization of total power flow strategy is applied. Through numerical simulations, the control efficiencies of the different control types (machine control, raft control and full control) are compared, illustrating the efficiency of the presented model, obtaining some valuable results, and presenting some general design principles of the active floating raft isolation systems. © 2004 Elsevier Ltd. All rights reserved.

Citation Format(s)

On active vibration isolation of floating raft system. / Niu, Junchuan; Song, Kongjie; Lim, C. W.
In: Journal of Sound and Vibration, Vol. 285, No. 1-2, 06.07.2005, p. 391-406.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review