Browsing NTNU Open by Author "Wang, Tongtong"
Now showing items 1-18 of 18
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Adaptive Data-driven Predictor of Ship Maneuvering Motion Under Varying Ocean Environments
Wang, Tongtong; Skulstad, Robert; Kanazawa, Motoyasu; Hatledal, Lars Ivar; Li, Guoyuan; Zhang, Houxiang (Chapter, 2022)Modern marine vessels operate increasingly autonomously, enabled by the strong interaction between data acquisition and analysis. The data-driven technology has been widely applied and significantly benefits maritime ... -
A Co-operative Hybrid Model For Ship Motion Prediction
Skulstad, Robert; Li, Guoyuan; Fossen, Thor I.; Wang, Tongtong; Zhang, Houxiang (Peer reviewed; Journal article, 2021)Dynamic models of ships have been widely used for model-based control and short-term prediction in the past. Identifying the parameters of such models has mainly been done through scaled model tests, full scale tests or ... -
A Digital Twin of the Research Vessel Gunnerus for Lifecycle Services: Outlining Key Technologies
Zhang, Houxiang; Li, Guoyuan; Hatledal, Lars Ivar; Chu, Yingguang; Ellefsen, André Listou; Han, Peihua; Major, Pierre Yann; Skulstad, Robert; Wang, Tongtong; Hildre, Hans Petter (Journal article; Peer reviewed, 2022) -
Effect of Ship Propulsion Retrofit on Maneuverability Research Based on Co-simulation
Wang, Tongtong; Hatledal, Lars Ivar; Kanazawa, Motoyasu; Li, Guoyuan; Zhang, Houxiang (Chapter, 2022)Shipping has been dominating the transportation industry in worldwide trade. During the service life of a vessel, conversions in mid-life often occur for economic or technical purposes. By replacing expired components or ... -
An effective model-based thruster failure detection method for dynamically positioned ships
Wang, Tongtong; Li, Guoyuan; Skulstad, Robert; Æsøy, Vilmar; Zhang, Houxiang (Chapter, 2020)This paper presents an effective model-based thruster failure detection and isolation method for dynamically positioned (DP) offshore surface vessels. A DP vessel is supposed to maintain its position and heading at a ... -
Genetic Algorithm-based Parameter Identification for Ship Manoeuvring Model under Wind Disturbance
Zhu, Mingda (Master thesis, 2021)With the rapid development in ship digitalization and automation, to accurately determine the ship mathematical model has become much more demanding. Dynamic ship mathematical model with high fidelity is the indispensable ... -
Incorporating Approximate Dynamics Into Data-Driven Calibrator: A Representative Model for Ship Maneuvering Prediction
Wang, Tongtong; Li, Guoyuan; Hatledal, Lars Ivar; Skulstad, Robert; Æsøy, Vilmar; Zhang, Houxiang (Peer reviewed; Journal article, 2021)High-fidelity models capable of accurately predicting ship motion are critical for promoting innovation and efficiency in the maritime industry. However, creating an advanced model that comprehensively represents the system ... -
Knowledge and data in cooperative modeling: Case studies on ship trajectory prediction
Kanazawa, Motoyasu; Wang, Tongtong; Skulstad, Robert; Li, Guoyuan; Zhang, Houxiang (Peer reviewed; Journal article, 2022)A ship automation will be a key to the future maritime. In particular, ship dynamic models play an integral role. However, it is challenging to develop an accurate model readily. Recent studies proposed a physics-data ... -
Knowledge transfer strategy for enhancement of ship maneuvering model
Wang, Tongtong; Skulstad, Robert; Kanazawa, Motoyasu; Li, Guoyuan; Zhang, Houxiang (Peer reviewed; Journal article, 2023)The advancement of autonomous vehicles and concerns about ship navigation safety have resulted in a greater need for ship model quality. However, in situations where there is limited prior information or data available ... -
Multi-step Ship Roll Motion Prediction Based on Bi-LSTM and Input Optimization
Li, Shiyang; Wang, Tongtong; Li, Guoyuan; Skulstad, Robert; Zhang, Houxiang (Chapter, 2023)Ship roll is a crucial metric in assessing the vessel's safety in offshore operations. This paper investigates input selection for predicting short-term ship roll motion using the Bidirectional Long Short-Term Memory Network ... -
Parameter Identification of Ship Manoeuvring Model Under Disturbance Using Support Vector Machine Method
Wang, Tongtong; Li, Guoyuan; Wu, Baiheng; Æsøy, Vilmar; Zhang, Houxiang (Peer reviewed; Journal article, 2021).Demanding marine operations increase the complexity of manoeuvring. A highly accurate ship model promotes predicting ship motions and advancing control safety. It is crucial to identify the unknown hydrodynamic coefficients ... -
A Physics-Data Co-Operative Ship Dynamic Model for a Docking Operation
Kanazawa, Motoyasu; Skulstad, Robert; Wang, Tongtong; Li, Guoyuan; Hatledal, Lars Ivar; Zhang, Houxiang (Journal article; Peer reviewed, 2022)The development of onboard sensors is bringing us to the next level of ship digitalization. Its ultimate goal is to ensure safe & efficient marine operation by ship intelligence. In particular, during a docking operation, ... -
Physics-data Cooperative Modeling for Ship Motion Prediction
Wang, Tongtong (Doctoral theses at NTNU;2022:206, Doctoral thesis, 2022)Increasing development on autonomous vehicles and concern on ship navigation safety put forward a higher requirement for ship motion forecasting technology. The predictions of ship motion in the near future can give the ... -
Physics-data cooperative ship motion prediction with onboard wave radar for safe operations
Kanazawa, Motoyasu; Wang, Tongtong; Skulstad, Robert; Li, Guoyuan; Zhang, Houxiang (Chapter, 2023)The advancement of sensing technologies brings digitalization into the field of offshore operations. Especially, practitioners have paid attention to ensuring operational safety by predicting ship motion with motion sensors ... -
Sailing status recognition to enhance safety awareness and path routing for a commuter ferry
Wu, Baiheng; Li, Guoyuan; Wang, Tongtong; Hildre, Hans Petter; Zhang, Houxiang (Peer reviewed; Journal article, 2021)This paper suggests a framework about how log data are used to develop a classifier to recognise the sailing status of a commuter ferry, which, in turn, serves as a tool of safety awareness. Several sailing scenarios are ... -
Ship maneuvering model optimization for improved identification with less excitation
Li, Shiyang; Wang, Tongtong; Li, Guoyuan; Zhang, Houxiang (Peer reviewed; Journal article, 2023)The precise model of a ship is the foundation for its operation and control. The traditional methods of building such models are time-consuming and require large amounts of simulation data, sea trial experiments, or ... -
Short-term ship roll motion prediction using the encoder–decoder Bi-LSTM with teacher forcing
Li, Shiyang; Wang, Tongtong; Li, Guoyuan; Skulstad, Robert; Zhang, Houxiang (Peer reviewed; Journal article, 2024)The safety of maritime operations has become a paramount concern with the advancement of intelligent ships. Ship stability and safety are directly impacted by roll motion, making the prediction of short-term ship roll ... -
Uncertainty and sensitivity analysis for the performance evaluation of ship dynamical model
Wang, Chunlin; Wang, Tongtong; Nord, Torodd Skjerve; Zhang, Houxiang; Li, Guoyuan; Osen, Ottar (Chapter, 2022)Model uncertainty is pervasive and inherent in the engineering field. It could bring potential risks in real applications, especially for ship behaviour prediction under environmental disturbances. The evaluation and ...