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dc.contributor.authorDo, Khac Duc
dc.contributor.authorPan, J.
dc.date.accessioned2017-01-30T10:53:53Z
dc.date.available2017-01-30T10:53:53Z
dc.date.created2016-09-12T08:36:40Z
dc.date.issued2008
dc.identifier.citationDo, K.D. and Pan, J. 2008. Nonlinear control of an active heave compensation system. Journal of Ocean Engineering. 35 (5-6): pp. 558-571.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/6551
dc.identifier.doi10.1016/j.oceaneng.2007.11.005
dc.description.abstract

Heave motion of a vessel or a rig has an adverse impact on the response of a drill-string or a riser. To compensate for heave motion, passive and active devices are usually used. Active heave compensators, in which a control system is an essential part, allow conducting operations under more extreme weather conditions than passive ones. This paper presents a constructive method to design a nonlinear controller for an active heave compensation system using an electro-hydraulic system driven by a double rod actuator. The control system reduces the effect of the heave motion of the vessel on the response of the riser by regulating the distance from the upper end of the riser to the seabed. The control development is based on Lyapunov's direct method and disturbance observers. The paper also includes a method to select the control and disturbance observer gains such that actuator saturations are avoided. Stability of the closed loop system is carefully examined. Simulation results illustrate the effectiveness of the proposed control system. © 2007 Elsevier Ltd. All rights reserved.

dc.publisherPergamon
dc.titleNonlinear control of an active heave compensation system
dc.typeJournal Article
dcterms.source.volume35
dcterms.source.number5-6
dcterms.source.startPage558
dcterms.source.endPage571
dcterms.source.issn0029-8018
dcterms.source.titleJournal of Ocean Engineering
curtin.departmentDepartment of Mechanical Engineering
curtin.accessStatusFulltext not available


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