In dynamic positioning systems for floating marine constructions a three-degrees-of-freedom multivariable controller, with feedback from the horizontal-plane positions and velocities in surge, sway and yaw, has been regarded as adequate for the control objective. However, for certain marine constructions with discernible coupling characteristics in the dynamics and kinematics between the horizontal-plane and the vertical-plane, undesirably large roll and pitch oscillations may be induced by the thruster actions applying the conventional horizontal-plane control strategy. A new multivariable control law accounting for both horizontal and vertical motions is proposed. It is shown that significant roll-pitch damping can be achieved. Moreover, the positioning performance in surge, sway and yaw is also improved because of suppressed roll-and pitch-induced horizontal-plane motions.


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    Titel :

    Positioning of small-waterplane-area marine constructions with roll and pitch damping


    Weitere Titelangaben:

    Positionierungsregelung von kleinen, schwimmenden Plattformen mit Dämpfung der Roll- und Nickbewegung


    Beteiligte:
    Sorensen, A.J. (Autor:in) / Strand, J.P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2000


    Format / Umfang :

    9 Seiten, 10 Bilder, 12 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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