Control of shipboard cranes

M S Baptista, B R Hunt, C Grebogi, E Ott, J A Yorke

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

Abstract

We propose a new shipboard crane configuration for offloading cargo in open seas. We show that the "Maryland Rigging" crane of ship's configuration, used in association with a friction control mechanism, provides a very effective method for reducing load pendulation caused by the motion of the crane in the roll direction. The effectiveness of the control technique is obtained by comparing the performances of the "Maryland Rigging" configuration with the standard "rider block tagline system", commonly used in crane ships. In most of the cases studied for which different sea conditions are considered, the "Maryland Rigging" reduces the root mean square swing of the load by an order of magnitude as compared to the current rider block configuration.

Original languageEnglish
Title of host publicationIUTAM Symposium on Recent Developments in Non-Linear Oscillations of Mechanical Systems
EditorsNguyen Van Dao, E. J. Kreuzer
Place of PublicationLondon, England
PublisherKluwer Academic Publishers
Pages75-84
Number of pages10
Volume77
ISBN (Print)9780792364702
Publication statusPublished - 2000

Publication series

NameSolid Mechanics and Its Applications
PublisherKluwer Academic Publishers
ISSN (Print)0925-0042

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