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Article: Semi-active control of ship mast vibrations using magneto-rheological dampers

TitleSemi-active control of ship mast vibrations using magneto-rheological dampers
Authors
KeywordsMagneto-rheological damper
Neural network
Semi-active control
Ship mast
Structural vibration
Issue Date2008
PublisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=sem&subpage=5
Citation
Structural Engineering And Mechanics, 2008, v. 30 n. 6, p. 679-698 How to Cite?
AbstractOn marine vessels, delicate instruments such as navigation radars are normally mounted on ship masts. However the vibrations at the top of mast where the radar is mounted often cause serious deterioration in radar-tracking resolution. The most serious problem is caused by the rotational vibrations at the top of mast that may be due to wind loading, inertial loading from ship rolling and base excitations induced by the running propeller. This paper presents a method of semi-active vibration control using magneto-rheological (MR) dampers to reduce the rotational vibration of the mast. In the study, the classical optimal control algorithm, the independent modal space control algorithm and the double input - single output fuzzy control algorithm are employed for the vibration control. As the phenomenological model of an MR damper is highly nonlinear, which is difficult to analyse, a back-propagation neural network is trained to emulate the inverse dynamic characteristics of the MR damper in the analysis. The trained neural network gives the required voltage for each MR damper based on the displacement, velocity and control force of the MR damper quickly. Numerical simulations show that the proposed control methods can effectively suppress the rotational vibrations at the top of mast.
Persistent Identifierhttp://hdl.handle.net/10722/58555
ISSN
2015 Impact Factor: 1.021
2015 SCImago Journal Rankings: 0.450
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, YSen_HK
dc.contributor.authorAu, FTKen_HK
dc.contributor.authorZhong, JPen_HK
dc.date.accessioned2010-05-31T03:32:27Z-
dc.date.available2010-05-31T03:32:27Z-
dc.date.issued2008en_HK
dc.identifier.citationStructural Engineering And Mechanics, 2008, v. 30 n. 6, p. 679-698en_HK
dc.identifier.issn1225-4568en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58555-
dc.description.abstractOn marine vessels, delicate instruments such as navigation radars are normally mounted on ship masts. However the vibrations at the top of mast where the radar is mounted often cause serious deterioration in radar-tracking resolution. The most serious problem is caused by the rotational vibrations at the top of mast that may be due to wind loading, inertial loading from ship rolling and base excitations induced by the running propeller. This paper presents a method of semi-active vibration control using magneto-rheological (MR) dampers to reduce the rotational vibration of the mast. In the study, the classical optimal control algorithm, the independent modal space control algorithm and the double input - single output fuzzy control algorithm are employed for the vibration control. As the phenomenological model of an MR damper is highly nonlinear, which is difficult to analyse, a back-propagation neural network is trained to emulate the inverse dynamic characteristics of the MR damper in the analysis. The trained neural network gives the required voltage for each MR damper based on the displacement, velocity and control force of the MR damper quickly. Numerical simulations show that the proposed control methods can effectively suppress the rotational vibrations at the top of mast.en_HK
dc.languageengen_HK
dc.publisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=sem&subpage=5en_HK
dc.relation.ispartofStructural Engineering and Mechanicsen_HK
dc.subjectMagneto-rheological damperen_HK
dc.subjectNeural networken_HK
dc.subjectSemi-active controlen_HK
dc.subjectShip masten_HK
dc.subjectStructural vibrationen_HK
dc.titleSemi-active control of ship mast vibrations using magneto-rheological dampersen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1225-4568&volume=30&issue=6&spage=679&epage=698&date=2008&atitle=Semi-active+control+of+ship+mast+vibrations+using+magneto-rheological+dampersen_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-57749097049en_HK
dc.identifier.hkuros158983en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-57749097049&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue6en_HK
dc.identifier.spage679en_HK
dc.identifier.epage698en_HK
dc.publisher.placeKorea, Republic ofen_HK
dc.identifier.scopusauthoridCheng, YS=7404911293en_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK
dc.identifier.scopusauthoridZhong, JP=22959405200en_HK

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