Modeling and Control of Tugboat-Assisted Operation for Marine Vessels

This paper introduces a novel approach to modeling and control system design for tugboat-assisted operations, such as the docking and rescue of marine vessels. In these scenarios, one or more tugboats push, pull, or guide large vessels to ensure precise and safe maneuvering. Their control systems en...

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Main Authors: Jung-Suk Park, Tan-Ngoc Nguyen, Cao-Tri Dinh, Thinh Huynh, Young-Bok Kim
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Journal of Marine Science and Engineering
Subjects:
Online Access:https://www.mdpi.com/2077-1312/13/4/804
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author Jung-Suk Park
Tan-Ngoc Nguyen
Cao-Tri Dinh
Thinh Huynh
Young-Bok Kim
author_facet Jung-Suk Park
Tan-Ngoc Nguyen
Cao-Tri Dinh
Thinh Huynh
Young-Bok Kim
author_sort Jung-Suk Park
collection DOAJ
description This paper introduces a novel approach to modeling and control system design for tugboat-assisted operations, such as the docking and rescue of marine vessels. In these scenarios, one or more tugboats push, pull, or guide large vessels to ensure precise and safe maneuvering. Their control systems ensure accurate coordination, vessel positioning, and overall stability, even in the presence of system uncertainties, imperfect control allocation, and ocean disturbances. To address these challenges, a mathematical model of a general tugboat-assisted system is first derived. Then, a new vector of variables is introduced, leading to a modified model representation where the mismatches from the allocation and lower-level tugboat controllers can be realized in the vessel’s motion equation. Thus, the design of a controller can take this aspect into account to enhance the overall system’s performance and stability. Thirdly, a control system design method is proposed, employing a centralized control framework and ensuring a mixed <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi><mo>₂</mo><mo>/</mo><msub><mrow><mi>H</mi></mrow><mrow><mo>∞</mo></mrow></msub></mrow></semantics></math></inline-formula> performance criterion. Finally, a case study is conducted with a particular tugboat-assisted configuration and the results validate the effectiveness of the control solution.
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spelling doaj-art-7a02bafa025840aeb58dacda4ff94aaf2025-08-20T03:13:55ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-04-0113480410.3390/jmse13040804Modeling and Control of Tugboat-Assisted Operation for Marine VesselsJung-Suk Park0Tan-Ngoc Nguyen1Cao-Tri Dinh2Thinh Huynh3Young-Bok Kim4Training Ship Baek-Kyung, Pukyong National University, Busan 48513, Republic of KoreaFaculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, VietnamFaculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 700000, VietnamDepartment of Smart Mobility Engineering, College of Information Technology and Convergence, Pukyong National University, Busan 48513, Republic of KoreaDepartment of Intelligent Robot Engineering, Pukyong National University, Busan 48513, Republic of KoreaThis paper introduces a novel approach to modeling and control system design for tugboat-assisted operations, such as the docking and rescue of marine vessels. In these scenarios, one or more tugboats push, pull, or guide large vessels to ensure precise and safe maneuvering. Their control systems ensure accurate coordination, vessel positioning, and overall stability, even in the presence of system uncertainties, imperfect control allocation, and ocean disturbances. To address these challenges, a mathematical model of a general tugboat-assisted system is first derived. Then, a new vector of variables is introduced, leading to a modified model representation where the mismatches from the allocation and lower-level tugboat controllers can be realized in the vessel’s motion equation. Thus, the design of a controller can take this aspect into account to enhance the overall system’s performance and stability. Thirdly, a control system design method is proposed, employing a centralized control framework and ensuring a mixed <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>H</mi><mo>₂</mo><mo>/</mo><msub><mrow><mi>H</mi></mrow><mrow><mo>∞</mo></mrow></msub></mrow></semantics></math></inline-formula> performance criterion. Finally, a case study is conducted with a particular tugboat-assisted configuration and the results validate the effectiveness of the control solution.https://www.mdpi.com/2077-1312/13/4/804centralized controlmodelingmarine vessels<i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> controltugboat-assisted system
spellingShingle Jung-Suk Park
Tan-Ngoc Nguyen
Cao-Tri Dinh
Thinh Huynh
Young-Bok Kim
Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
Journal of Marine Science and Engineering
centralized control
modeling
marine vessels
<i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> control
tugboat-assisted system
title Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
title_full Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
title_fullStr Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
title_full_unstemmed Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
title_short Modeling and Control of Tugboat-Assisted Operation for Marine Vessels
title_sort modeling and control of tugboat assisted operation for marine vessels
topic centralized control
modeling
marine vessels
<i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> control
tugboat-assisted system
url https://www.mdpi.com/2077-1312/13/4/804
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AT thinhhuynh modelingandcontroloftugboatassistedoperationformarinevessels
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