Motion Feasibility Framework for Remotely Operated Vehicles Based on Dynamic Positioning Capability

Juan A. Ramírez-Macías, Rafael E. Vásquez, Asgeir J. Sørensen, Svein Sævik

    Research output: Contribution to journalArticlepeer-review

    3 Scopus citations

    Abstract

    Knowing whether a remotely operated vehicle (ROV) is able to operate at certain foreknown environmental conditions is a question relevant to different actors during the vehicle's life cycle: during design stages, buying an ROV, planning operations, and performing an operation. This work addresses a framework to assess motion feasibility in ROVs by using the concept of ROV-dynamic positioning capability (ROV-DPCap). Within the proposed framework, the ROV-DPCap number is defined to measure motion capability, and ROV-DPCap plots are used to illustrate results, for quasi-static standard (L2) and site-specific (L2s) conditions, and dynamic standard (L3) and site-specific (L3s) conditions. Data are computed by steady-state or time-domain simulations from the ROV model, depending on the desired analysis. To illustrate the use of the framework, numerical examples for L2 and L2s motion feasibility analyses for NTNU's ROV Minerva are provided. Motion feasibility can be used to know whether an ROV is appropriately designed for a specific operation and choose the appropriate one for a certain need, for instance, when designing the DP system components or planning an operation from the environmental data and ROV-specific information. As expected, predictions can be improved when more detailed information about the ROV appears; the same framework can be used to provide more detailed answers to motion feasibility-related questions. The results are likely to be straightforwardly understood by people whose work/training is ROV related and can interpret the graphic results for different operation scenarios.

    Original languageEnglish
    Article number011702
    JournalJournal of Offshore Mechanics and Arctic Engineering
    Volume143
    Issue number1
    DOIs
    StatePublished - 1 Feb 2021

    Bibliographical note

    Funding Information:
    ECOPETROL; the Universidad Pontificia Bolivariana - Medellín, UPB; the Universidad Nacional de Colombia - Sede Medellín, UNALMED; and through the Strategic Program for the Development of Robotic Technology for Offshore Exploration of the Colombian Seabed, project 1210–531–30550, contract 0265– 2013. This work was also partly supported by the Research Council of Norway through the Centres of Excellence funding scheme, project number 223254—AMOS. The authors thank to the Norwegian University of Science and Technology’s Centre for Autonomous Marine Operations and Systems for Juan A. Ramírez-Macías’s PhD internship.

    Publisher Copyright:
    © 2020 by ASME.

    Keywords

    • computational mechanics and design
    • sub-sea technology
    • system integrity assessment

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