ObjectiveThis paper investigates the synchronization control problem for supply and supplied ships during underway replenishment in a constantly time-varying ocean environment while considering the ocean environmental disturbances induced by wind, waves and currents, and the interaction effects between ships and their soft connections. It then proposes an event-triggered synchronization anti-disturbance control method based on disturbance estimation and compensation.MethodThe first-order Markov process is used to describe the ocean environmental disturbances induced by waves, wind and currents that affect the supply ship, as well as the unmodeled dynamics. The interaction effects between the ships and their soft connections are included in the unmodeled dynamics. The online disturbance observer estimates time-varying unknown bounded disturbances which are compensated for in the control design using disturbance estimates. The auxiliary dynamic system helps to reduce the control saturation effects on anti-disturbance control. The event-triggered mechanism reduces the execution frequencies of control signals to avoid the excessive wear of the thrusters.ResultsA simulation of a supply ship using the event-triggered control method shows the existence of a minimum sampling interval greater than 0 and the inability to trigger infinitely in a finite time. The controller can achieve synchronous navigation between supply and supplied ships while ensuring the global uniform ultimate boundedness of all closed-loop control signals.ConclusionThe simulation results validate the effectiveness of the proposed event-triggered disturbance estimation and compensation control method.


    Access

    Download


    Export, share and cite



    Title :

    Event-triggered synchronization anti-disturbance control method for ship replenishment


    Contributors:
    Xin HU (author) / Qingtao GONG (author) / Guibing ZHU (author) / Guojie HAN (author) / Yuan WANG (author)


    Publication date :

    2024




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Control of ship replenishment by output feedback synchronization

    Bondhus, A.K. / Pettersen, K.Y. | Tema Archive | 2005


    Unmanned replenishment ship and control method applied to unmanned replenishment ship

    YANG RENYOU / YANG LIANG / ZHU YUZHEN et al. | European Patent Office | 2024

    Free access

    Output synchronization control of ship replenishment operations: Theory and experiments

    Kyrkjebo, Erik / Pettersen, Kristin Y. / Wondergem, Michiel et al. | Tema Archive | 2007


    Event-Triggered Active Disturbance Rejection Control

    Shi, Dawei / Huang, Yuan / Wang, Junzheng et al. | Springer Verlag | 2021