Temat: Ship's Trajectory - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Analysis of Methods of Determining the Safe Ship Trajectory
Autorzy:: Lisowski, J.
Tematy:: ship route
Safe Ship Trajectory
route planning
Determining the Safe Ship Trajectory
ship trajectory
Artificial Neural Network (ANN)
game theory
computer simulation; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116647.pdf Link otwiera się w nowym oknie
Opis:: The paper describes six methods of optimal and game theory and artificial neural network for synthesis of safe control in collision situations at sea. The application of optimal and game control algorithms to determine the own ship safe trajectory during the passing of other encountered ships in good and restricted visibility at sea is presented. The comparison of the safe ship control in collision situation: multi-step matrix non-cooperative and cooperative games, multi-stage positional non-cooperative and cooperative games have been introduced. The considerations have been illustrated with examples of computer simulation of the algorithms to determine safe of own ship trajectories in a navigational situation during passing of eight met ships.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: Verification of a deterministic ships safe trajectory planning algorithm from different ships’ perspectives and with changing strategies of target ships
Autorzy:: Lazarowska, A.
Tematy:: safe ship's trajectory
ship's trajectory
collision avoidance module
autonomous navigation system
maritime autonomous surface ships; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/2063957.pdf Link otwiera się w nowym oknie
Opis:: The paper presents results of a ship's safe trajectory planning method verification - the Trajectory Base Algorithm, which is a deterministic approach for real-time path-planning with collision avoidance. The paper presents results of the algorithm’s verification from different ships’ perspectives and with changing strategies of target ships. Results prove the applicability of the algorithm in the Collision Avoidance Module of the Autonomous Navigation System for Maritime Autonomous Surface Ships.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evolutionary Ship Track Planning within Traffic Separation Schemes – Evaluation of Individuals
Autorzy:: Szłapczyński, R.
Tematy:: collision avoidance
Track Planning
ship trajectory; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116089.pdf Link otwiera się w nowym oknie
Opis:: The paper presents an extended version of the author’s Evolutionary Sets of Safe Ship Trajectories method. The method plans safe tracks of all ships involved in an encounter including speed reduction maneuvers, if necessary, and taking into account Rule 10 of COLREGS, which specifies ships’ behavior within Traffic Separation Schemes governed by IMO. The paper focuses on the evaluation phase of the evolutionary process and shows how fitness function is designed to compare various possible tracks as well as to assess the quality of a final solution. The impact of the fitness function on the method’s results is illustrated by examples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ship Trajectory Control Optimization in Anti-collision Maneuvering
Autorzy:: Zhang, J. F.
Yang, X. D.
Zhang, D.
Haugen, S.
Tematy:: anticollision
ship trajectory
genetic algorithm
route optimization; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116373.pdf Link otwiera się w nowym oknie
Opis:: A lot of attention is being paid to ship’s intelligent anti‐collision by researchers. Several solutions have been introduced to find an optimum trajectory for ship, such as Game Theory, Genetic or Evolutionary Algorithms and so on. However, ship’s maneuverability should be taken into consideration before their real applications. Ship’s trajectory control in anti‐collision maneuvering is studied in this paper. At first, a simple linear ship maneuverability model is introduced to simulate its movement under different speed and rudder angle. After that, ship’s trajectory control is studied by considering the duration of rudder, operation distance to turning points, and maximum angular velocity. The details for algorithm design are also introduced. By giving some restrictions according to the requirements from COLREGs, the intervals for rudder angle in different circumstances can be determined based on the curves. The results can give very meaningful guidance for seafarers when making decisions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The safe ships trajectory in a restricted area
Autorzy:: Pietrzykowski, Z.
Magaj, J.
Tematy:: safety of navigation
ship trajectory
restricted area
ship domain
optimization; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/360322.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the problem of determining a safe ship trajectory in a restricted area. The route choice task is defined as a dynamic optimization problem. The route choice algorithm and criteria are presented and discussed. The ship fuzzy domains are used as a safety criterion. The criterion of the number of manoeuvres to be performed by the own ship is added to the algorithm. The ship encounters simulated situations. Calculated safe ship trajectories were presented and discussed. Discusses the implementation of the present process, in real terms.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Ship trajectory tracking control system design based on sliding mode control algorithm
Autorzy:: Liu, Y.
Bu, R.
Gao, X.
Tematy:: LOS
ship trajectory
tracking control system
sliding mode control; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/259621.pdf Link otwiera się w nowym oknie
Opis:: The paper reports the design and tests of the planar autopilot navigation system in the three-degree-of-freedom (3-DOF) plane (surge, sway and yaw) for a ship. The aim of the tests was to check the improved maneuverability of the ship in open waters using the improved nonlinear control algorithm, developed based on the sliding mode control theory for the ship-trajectory tracking problem of under-actuated ships with static constraints, actuator saturation, and parametric uncertainties. With the integration of the simple increment feedback control law, the dynamic control strategy was developed to fulfill the under-actuated tracking and stabilization objectives. In addition, the LOS (line of sight) guidance system was applied to control the motion path, whereas the sliding mode controller was used to emulate the rudder angle and propeller rotational speed control. Firstly, simulation tests were performed to verify the validity of the basic model and the tracking control algorithm. Subsequently, full scale maneuverability tests were done with a novel container ship, equipped with trajectory tracking control and sliding mode controller algorithm, to check the dynamic stability performance of the ship. The results of the theoretical and numerical simulation on a training ship verify the invariability and excellent robustness of the proposed controller, which: effectively eliminates system chattering, solves the problem of lateral drift of the ship, and maintains the following of the trajectory while simultaneously achieving global stability and robustness.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Określanie krzywizny trajektorii płaskiej statku za pomocą GPS
Determination of ships plane trajectory curvature by GPS
Autorzy:: Banachowicz, A.
Wolski, A.
Banachowicz, B.
Tematy:: GPS
trajektoria statku
pozycjonowanie
nawigacja
ship trajectory
positioning
navigation; Pokaż więcej
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Powiązania:: https://bibliotekanauki.pl/articles/210979.pdf Link otwiera się w nowym oknie
Opis:: W artykule przedstawiono sposób określania krzywizny trajektorii statku w płaszczyźnie horyzontu z wykorzystaniem ciągu pozycji GPS. Stosując aproksymację średniokwadratową ciągu pomiarów współrzędnych pozycji, możemy otrzymać równania parametryczne współrzędnych statku. Pozwala to na wykreślenie krzywej płaskiej trajektorii statku oraz jej ewoluty. W artykule przedstawiono przykład krzywoliniowej trajektorii statku oraz jej ewoluty (z cyrkulacją oraz z punktem przegięcia) określonej na podstawie rzeczywistych pomiarów DGPS.
This article describes a method for the determination of ship's trajectory curvature in the horizontal plane using a series of GPS positions. Using mean square approximation of a series of position coordinates measurements we can obtain parametric equations of ship's coordinates. This allows us to plot a ship's plane trajectory curve and its evolute. Besides, an example of ship’s curvi-linear trajectory and its evolute are presented, including the circulation and the inflexion point, determined from actual DGPS measurements.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The problem of route determination in ship movement in a restricted area
Autorzy:: Pietrzykowski, Z.
Magaj, J.
Tematy:: safety of navigation
ship trajectory
restricted area
ship domain
multi-stage control; Pokaż więcej
Wydawca:: Polskie Forum Nawigacyjne
Powiązania:: https://bibliotekanauki.pl/articles/320731.pdf Link otwiera się w nowym oknie
Opis:: This article focuses on the problem of determining a safe trajectory of a ship proceeding in a restricted area. An algorithm of trajectory choice has been developed, taking into account the parameters of the area, own ship, target ship and other vessels sailing in vicinity. The ship domain has been adopted as a safety criterion. The research results for selected test trials are presented and analyzed. The applicability of the proposed method of trajectory choice in real conditions is considered.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Verification of ships trajectory planning algorithms using real navigational data
Autorzy:: Lazarowska, A.
Tematy:: Visibility Graph-search Algorithm (VGA)
Discrete Artificial Potential Field (DAPF)
real navigational data
ARPA
ship's trajectory planning
ship's trajectory planning algorithms
Ant Colony Optimization (ACO)
Trajectory Base Algorithm (TBA); Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/117103.pdf Link otwiera się w nowym oknie
Opis:: The paper presents results of ship's safe trajectory planning algorithms verification. Real navigational data registered from a radar with an Automatic Radar Plotting Aid on board the research and training ship Horyzont II were used as input data to the algorithms. The algorithms verified in the presented research include the Ant Colony Optimization algorithm (ACO), the Trajectory Base Algorithm (TBA), the Visibility Graph-search Algorithm (VGA) ant the Discrete Artificial Potential Field algorithm (DAPF). Details concerning data registration and exemplary results obtained with the use or real navigational data are introduced and summarized in the paper. Presented results prove the applicability of proposed algorithms for solving the ship's safe trajectory planning problem.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Game Strategies of Ship in the Collision Situations
Autorzy:: Lisowski, J.
Tematy:: game theory
Game Ship Control (GSC)
Collision Situation
MATLAB
Safe Ship Trajectory
Simulation Research
Neural Ship’s Domain
Algorithm; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/117558.pdf Link otwiera się w nowym oknie
Opis:: The paper introduced the basic model of process of safe ship control in a collision situation using a game model with j objects, which includes non-linear state equations and non-linear, time varying constraints of the state variables as well as the quality game control index in the forms of the game integral payment and the final payment. Approximated model of the process control as the model of multi-step matrix game in the form of dual linear programming problem has been adopted here. The Game Ship Control GSC computer program has been designed in the Matlab/Simulink software in order to determine the own ship’s safe trajectory. These considerations have been illustrated with examples of a computer simulation using an GSC program for determining the safe ship's trajectory in real navigational situation. Simulation research were passed for five sets of strategies of the own ship and met ships.
Dostawca treści:: Biblioteka Nauki

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