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    Wyświetlanie 1-12 z 12
    Tytuł:
    Universal Autonomous Control and Management Sytem for multipurpose unmanned surface vessel
    Autorzy:
    Stateczny, Andrzej
    Burdziakowski, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/258764.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    unmanned surface vessel
    autonomous
    management
    control
    system
    Opis:
    The paper presents design, structure and architecture of the Universal Autonomous Control and Management System (UACAMS) for multipurpose unmanned surface vessel. The system was designed, installed and implemented on the multipurpose platform - unmanned surface vessel named HydroDron. The platform is designed to execute hydrographic survey missions with multi-variant configuration of the survey system (payload? ) including multi-beam echo sounder, sonar, LiDAR, automotive radar, photographic and spectral camera systems. The UACAMS designed to provide flexibility that enables to operate on the different kind of surface platform and different type of functional payload. The full system configuration provides all four level of autonomy starting from remotely controlled to full autonomous mission. Each level can be implemented and run depending on user specific requirements. The paper explains the differences between autonomous and automatic mission and shows how the autonomy is implemented into the presented system. The full hardware structural design as well as the software architecture are described. In order to confirm initial assumptions the applied system was tested during four- week sea trials and tuned for a selected vessel to confirm assumptions. In the project, also the original shore control station was designed, produced and tested for the vessel, including specific user controls and radio communication system. Conclusions sum up all crucial points of the design and system implementation process.
    Źródło:
    Polish Maritime Research; 2019, 1; 30-39
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shoreline extraction based on LiDAR data obtained using an USV
    Autorzy:
    Halicki, A.
    Specht, M.
    Stateczny, A.
    Specht, C.
    Lewicka, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201469.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    shoreline
    LiDAR
    laser scanning
    Unmanned Surface Vessel
    unmanned vehicles
    hydrography
    geodesy
    Opis:
    This article explores the use of Light Detection And Ranging (LiDAR) derived point clouds to extract the shoreline of the Lake Kłodno (Poland), based on their geometry properties. The data collection was performed using the Velodyne VLP-16 laser scanner, which was mounted on the HydroDron Unmanned Surface Vehicle (USV). A modified version of the shoreline extraction method proposed by Xu et al. was employed, comprising of the following steps: (1) classifying the point cloud using the Euclidean cluster extraction with a tolerance parameter of 1 m and min. cluster size of 10,000 points, (2) further filtration of boundary points by removing those with height above 1 m from the measured elevation of water surface, (3) manual determination of a curve consisting of 5 points located along the entire shoreline extraction region at a relatively constant distant from the coast, (4) removal of points that are further from the curve than the average distance, repeated twice. The method was tested on the scanned section of the lake shoreline for which Ground Control Points (GCP) were measured using a Global Navigation Satellite System (GNSS) Real Time Kinematic (RTK) receiver. Then, the results were compared to the ground truth data, obtaining an average position error of 2.12 m with a standard deviation of 1.11 m. The max error was 5.54 m, while the min. error was 0.41 m, all calculated on 281 extracted shoreline points. Despite the limitations of this parametric, semi-supervised approach, those preliminary results demonstrate the potential for accurate shoreline extraction based on LiDAR data obtained using an USV. Further testing and optimisation of this method for larger scale and better generalisation for different waterbodies are necessary to fully assess its effectiveness and feasibility. In this context, it is essential to develop computationally efficient methods for approximating shorelines that can accurately determine their course based on a set of points.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 445--453
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptive sliding mode control for ship autopilot with speed keeping
    Autorzy:
    Liu, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/259349.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    surface vessel
    speed loss
    adaptive control
    course keeping
    sliding mode control
    Opis:
    The paper addresses an important issue in surface vessel motion control practice that the ship dynamics and sailing performance can be affected by speed loss. The vessel speed is significantly decreased by the added resistance generated by waves. An adaptive sliding mode course keeping control design is proposed which takes into account uncertain ship dynamics caused by forward speed variations, while avoiding performance compromises under changing operating and environmental conditions. The sliding mode control provides robust performance for time-varying wave disturbances and time-varying changes in ship parameters and actuator dynamics. After combining the unknown but bounded system uncertainties, the design of the adaptation law is obtained which is based on the Lyapunov’s direct method. Simulations on a ship with two rudders illustrate the effectiveness of the proposed solution.
    Źródło:
    Polish Maritime Research; 2018, 4; 21-29
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An approximate method for calculating the resistance of a transport ship model
    Autorzy:
    Szelangiewicz, Tadeusz
    Żelazny, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/135240.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    friction resistance
    total resistance
    approximation of ship model resistance
    autonomous ships
    unmanned surface vessel (USV)
    ship model
    Opis:
    The article presents regression formulas for calculating the friction resistance RF and the total resistance RT of ship models in the 2.0–10.0 m range. The method for calculating the total resistance is novel and applies to the design models of an unmanned surface vessel (USV) for experimental testing of autonomous control. For both regression models (RF and RT), statistical and substantive tests were performed (the results of the calculations were compared with the experimental measurements). In both cases, convincing results were obtained, which have confirmed the possibility of their use at the preliminary design stage of unmanned ship models.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 60 (132); 64-71
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heading control system design for a micro-USV based on an adaptive expert S-PID algorithm
    Autorzy:
    Miao, R.
    Dong, Z.
    Wan, L.
    Zeng, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/258606.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    micro unmanned surface vessel (micro-USV)
    control system design
    adaptive expert S-PID algorithm
    heading control
    pool experiment
    lake experiment
    Opis:
    The process of heading control system design for a kind of micro-unmanned surface vessel (micro-USV) is addressed in this paper and a novel adaptive expert S-PID algorithm is proposed. First, a motion control system for the micro-USV is designed based on STM32-ARM and the PC monitoring system is developed based on Labwindows/CVI. Second, by combining the expert control technology, S plane and PID control algorithms, an adaptive expert S-PID control algorithm is proposed for heading control of the micro-USV. Third, based on SL micro-USV developed in this paper, a large number of pool experiments and lake experiments are carried out, to verify the effectiveness and reliability of the motion control system designed and the heading control algorithm proposed. A great amount of comparative experiment results shows the superiority of the proposed adaptive expert S-PID algorithm in terms of heading control of the SL micro-USV.
    Źródło:
    Polish Maritime Research; 2018, 2; 6-13
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Human Element and Autonomous Ships
    Autorzy:
    Ahvenjärvi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/115965.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    human element
    autonomous ship
    unmanned ship
    future of navigation
    unmanned surface vessel (USV)
    remote control
    Human Machine Interface (HMI)
    MUNIN project
    Opis:
    The autonomous ship technology has become a “hot” topic in the discussion about more efficient, environmentally friendly and safer sea transportation solutions. The time is becoming mature for the introduction of commercially sensible solutions for unmanned and fully autonomous cargo and passenger ships. Safety will be the most interesting and important aspect in this development. The utilization of the autonomous ship technology will have many effects on the safety, both positive and negative. It has been announced that the goal is to make the safety of an unmanned ship better that the safety of a manned ship. However, it must be understood that the human element will still be present when fully unmanned ships are being used. The shore-based control of a ship contains new safety aspects and an interesting question will be the interaction of manned and unmanned ships in the same traffic area. The autonomous ship technology should therefore be taken into account on the training of seafarers. Also it should not be forgotten that every single control algorithm and rule of the internal decision making logic of the autonomously navigating ship has been designed and coded by a human software engineer. Thus the human element is present also in this point of the lifetime navigation system of the autonomous ship.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 517-521
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Path following control of the underactuated USV based on the improved line-of-sight guidance algorithm
    Autorzy:
    Liu, T.
    Dong, Z.
    Du, H.
    Song, L.
    Mao, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/259559.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    unmanned surface vessel (USV)
    path following control
    Serret-Frenet coordinate frame
    underactuated system
    improved lineof-sight guidance algorithm
    nonlinear backstepping method
    Opis:
    The path following control problem of the underactuated unmanned surface vessel (USV) is studied in this paper. An improved line-of-sight (LOS) guidance algorithm is proposed which can adjust adaptively based on the path following error. The global asymptotically stable path following controller is designed based on the nonlinear backstepping method and the Lyapunov stability theory. Firstly, the USV path following error model is established in the Serret-Frenet (SF) coordinate frame. The path following error in the inertial coordinate frame is transformed into the SF coordinate frame, which is used to define the path following control problem. Secondly, inspired by the traditional LOS guidance algorithm, the longitudinal path following error in the SF coordinate frame is introduced into the improved LOS guidance algorithm. This allows the algorithm to adjust adaptively to the desired path. Thirdly, in order to solve the underactuated problem of the USV path following control system, the tangential velocity of the desired path is designed as a virtual input. The underactuated problem is converted to a virtual fully actuated problem by designing the virtual control law for the tangential velocity. Finally, by combining backstepping design principles and the Lyapunov stability theory, the longitudinal thrust control law and the yaw torque control law are designed for the underactuated USV. Meanwhile, the global asymptotic stability of the path following error is proved. Simulation experiments demonstrate the effectiveness and reliability of the improved LOS guidance algorithm and the path following controller.
    Źródło:
    Polish Maritime Research; 2017, 1; 3-11
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The prospect for the launche of a mini unmanned aerial vehicle from an unmanned surface vehicle
    Perspektywa startu małego bezzałogowego statku powietrznego z bezzałogowego pojazdu nawodnego
    Autorzy:
    Jurczyk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/223127.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
    Tematy:
    mini unmanned aerial vehicle (mini-UAV)
    unmanned surface vessel (USV)
    pneumatic launcher
    bezzałogowy statek powietrzny (UAV)
    bezzałogowy pojazd nawodny (USV)
    wyrzutnia pneumatyczna
    Opis:
    Due to the growing interest in the problems of cooperation among unmanned vehicles, in the article the proposition of the system for launching a mini unmanned aerial vehicle (mini-UAV) from an unmanned surface vehicle (USV) has been presented. The solution differs from the previously used in this that instead of the commonly used rotorcrafts it concerns the ability to start the mini aircraft with the help of pneumatic or rubber launcher. The results of the computer simulation have confirmed the possibility of implementation of that kind of system.
    W związku z rosnącym na świecie zainteresowaniem problemami współpracy między pojazdami bezzałogowymi w artykule przedstawiona została propozycja systemu pozwalającego na start małego bezzałogowego statku powietrznego (UAV) z małego bezzałogowego pojazdu nawodnego (USV). Rozwiązanie to różni się od dotychczasowych tym, iż zamiast stosowanych powszechnie wiropłatów rozpatrzono możliwość startu płatowca przy użyciu wyrzutni pneumatycznej lub gumowej wspomagającej start. Wyniki symulacji komputerowej potwierdziły możliwość realizacji takiego systemu.
    Źródło:
    Zeszyty Naukowe Akademii Marynarki Wojennej; 2018, R. 59 nr 1 (212), 1 (212); 5-26
    0860-889X
    Pojawia się w:
    Zeszyty Naukowe Akademii Marynarki Wojennej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Barriers impending introduction of autonomous vessels
    Autorzy:
    Pawelski, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/24202585.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    autonomous vessel
    autonomous shipping
    MASS
    marine autonomous surface ship
    remotely operated vessel
    unmanned vessels
    Opis:
    Today’s shipping industry is experiencing a shortage of properly trained and competent deck and engine officers. This problem is becoming more acute with each passing year and traditional methods to resolve it apparently do not work. It has become obvious that cargo vessels must be less dependent on human operators. The solution lies in the replacement of manned vessels with autonomous ones. The introduction of autonomous vessels encounters several barriers, which need to be analyzed to find ways to overcome them. It requires a multipronged analysis of existing regulations, technical limitations, cyber security, and co-existence of manned and unmanned vessels in waters with dense traffic. The most difficult problems lie in international regulations, which were written for manned vessels only. Such rules need to be reworked before the deployment of autonomous vessels can be sanctioned worldwide. Technical issues are being gradually resolved with the introduction of new technologies. Special attention should be given to the cyber security of autonomous shipping as it requires the transfer of very large amounts of data through wireless networks. Accommodation of manned and unmanned vessel traffic may require a new approach for ship routing to separate both kinds of traffic.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 72 (144); 34--41
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    From ship to shore – studies into potential practical consequences of autonomous shipping on VTS operation and training
    Autorzy:
    Janssen, T.
    Baldauf, M.
    Claresta, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201459.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    vessel traffic service
    maritime autonomous surface ships
    e-Navigation
    digitalization
    VTS Operator
    maritime education and training
    traffic surveillance
    VTS guideline
    Opis:
    Vessel Traffic Services (VTS) are to improve the safety and efficiency of vessel traffic and to protect the marine environment by interacting with the ship’s traffic in monitored coastal areas. Today, VTS operators are maritime professionals with nautical education from a university or technical college and practical experience on board. This experience and nautical background is a key element of the work as a VTS operator. It is to support understanding the daily work. The current situation in the maritime domain is undergoing substantial changes, such as introducing new technologies, implementing the e-Navigation concept based on sustainable digitalization and ambitions to realize unmanned and autonomous shipping. This paper will present preliminary results of a pilot study conducted in VTS Centres along the coast of North and Baltic Sea and discuss selected options and opportunities for education and training of future VTS operators, which might not have the advantage of practical sea experience anymore.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 383--390
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling of performance of a AUV vehicle towards limiting the hydro-acoustic field
    Autorzy:
    Gerigk, M. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/117327.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Autonomous Underwater Vessel (AUV)
    Autonomous Underwater Vehicle (AUV)
    Unmanned Underwater Vehicle (UUV)
    Unmanned Surface Vehicle (USV)
    AUV stealth vehicle
    hydroacoustics
    hydroacoustic field
    sonar
    Opis:
    Some results of research devoted to the modeling of a AUV-Stealth vehicle performance towards limiting its hydro-acoustic field are presented in the paper. At the beginning the AUV-Stealth autonomous underwater vehicle concept is described. Then the method of research is introduced. Next the key design drivers of the AUV-Stealth vehicle are presented. Between them are the AUV-Stealth hull form, arrangement of internal spaces, materials, hull covers, energy supply and propulsion system, etc. Some results of the hydrodynamic and stealth characteristics of the AUV-Stealth vehicle are briefly described. It is presented in the paper that the hull form, construction materials including the covers may affect the AUV-Stealth vehicle boundary layer and wake. This may create some problems of identification of the AUV-Stealth vehicle using a sonar or hydrophone. The final conclusions are presented.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 687-692
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Merging conventionally navigating ships and MASS - Merging VTS, FOC and SCC?
    Autorzy:
    Baldauf, M.
    Fischer, S.
    Kitada, M.
    Mehdi, R. A.
    Al-Quhali, M. A.
    Fiorini, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117306.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Maritime Autonomous Surface Ships (MASS)
    Vessel Traffic Service (VTS)
    e-Navigation
    fleet operation centre (FOC)
    International Maritime Organization (IMO)
    ship control centre (SCC)
    unmanned shipping
    unmanned ship
    Opis:
    Current maritime transportation and shipping is characterized by rapid technological developments effecting the basic concepts of operating ships and even changing traditional paradigms of controlling ships. The e-Navigation concept of the International Maritime Organization (IMO) specifically aims at more comprehensive and reliable support of the human operators on-board and ashore. However, autonomous unmanned ships remote controlled or even autonomously navigating are expected to come soon. In this paper, selected operational aspects of maritime traffic merging conventional and unmanned remote controlled ships in coastal areas are discussed. Furthermore, some preliminary results of experimental simulation studies into a future scenario of maritime traffic are presented and preliminary conclusions in respect to job profiling and training requirements are discussed.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 495-501
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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