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Tytuł:
The influence of hydro-meteorological factors on the risk of harbour operations
Autorzy:
Abramowicz-Gerigk, T.
Powiązania:
https://bibliotekanauki.pl/articles/258690.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
harbour operations
hydro-meteorological elements
model tests of self-berthing
real scale experiments
safety of navigation
ship motion simulation
Opis:
The paper presents a study on the environmental impact on the risk of harbour operations. The hydro-meteorological elements have been recognised as the most important safety factors with regard to the ship entrance into the harbour and berthing inside the docks. They are identified as real time, short and long term factors and they all should be considered in the safety assessment of harbour operations. The risk of each operation should be determined on the basis of weather forecast and the modelled prediction of the total water level, surface currents and waves. Several topics have been discussed in the paper with regard to the safe ship approach and navigation inside the harbour. The application of different tools for the prediction of ship performance is presented. The stochastic method for the determination of probability that the ship will navigate within the boundaries of the required navigational width and low speed manoeuvring standards proposed by Panel H-10 SNAME have been considered. The real scale experiments carried out in Port of Gdynia and the several trials performed using the Full Mission Simulator convinced that the open water model tests are necessary for the proper prediction of ship performance during berthing. The program of the proposed open water investigations is presented in the paper. The experimental stand constructed for the tests of ship-berth interactions, in the lake Silm at the Ilawa Ship Handling Training and Research Centre facilities is described.
Źródło:
Polish Maritime Research; 2007, S 2; 33-37
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ nastaw śruby okrętowej na poprawność funkcjonowania układu ruchowego statku
The influence of controllable pitch propeller on the correct operation of a ship’s power transmition system
Autorzy:
Adamkiewicz, A.
Fydrych, J.
Powiązania:
https://bibliotekanauki.pl/articles/359500.pdf
Data publikacji:
2009
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
nastawa
śruba napędowa
regulowany skok
układ ruchowy statku
bezpieczeństwo żeglugi
controllable pitch propeller
positioning
adjustable pitch
ship’s power transmission system
safety of navigation
Opis:
W artykule pokazano znaczenie poprawnej pracy nastawnej śruby napędowej dla bezpieczeństwa żeglugi statku. Dokonano identyfikacji funkcjonowania pneumatycznego układu sterowania śrubą nastawną. Przedstawiono wyniki pomiarów zmian wartości rzeczywistych nastaw skoku śruby napędowej w funkcji wartości ciśnienia powietrza sterującego. Zarejestrowane rozbieżności przypisano eksploatacyjnej degradacji stanu technicznego układu sterowania nastawą skoku śruby. Skonfrontowano je z zależnościami projektowymi i czasem eksploatacji. Pokazano możliwe konsekwencje użytkowania śruby nastawnej z tego typu niesprawnością dla poprawności pracy układu ruchowego statku.
This study shows the importance of correct operation of controllable pitch propeller for the safety of navigation. Operation of pneumatic control of controllable pitch propeller in a ship’s power transmission system was identified. The results of the change of the actual setting value measurements of the pitch screw propeller in the function of the value of the control air pressure have been presented. Recorded differences were assigned to operational degradation of the technical state of the pitch propeller control system. They were further confronted with the relationships between the design and time of operation. Possible consequences of operating a controllable pitch propeller with such a defect, and its impact on the correct operation of a ship’s power transmission system have been outlined. Operational requirements were presented.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2009, 17 (89); 5-8
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safe information exchange on board of the ship
Autorzy:
Ahvenjärvi, S.
Czarnowski, I.
Kåla, J.
Kyster, A.
Meyer, I.
Mogensen, J.
Szyman, P.
Powiązania:
https://bibliotekanauki.pl/articles/116173.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
information exchange
navigation safety
autonomous ship
autonomous ships navigation
information technology (IT)
safe information exchange
maritime education and training (MET)
cyber security
Opis:
The first ever attempt at fully autonomous dock-to-dock operation has been tested and demonstrated successfully at the end of 2018. The revolutionary shift is feared to have a negative impact on the safety of navigation and the getting of real-time situation awareness. Especially, the centralized context onboard could be changed to a distributed context. In navigation safety domain, monitoring, control, assessment of dangerous situations, support of operators of decision-making support system should be implemented in real time. In the context of autonomous ships, decision-making processes will play an important role under such ocean autonomy, therefore the same technologies should consist of adequate system intelligence. At the same time, situation awareness is the key element of the decision-making processes. Although there is substantial research on situation awareness measurement techniques, they are not suitable to directly execute quantitative processing for the situation awareness of autonomous ships navigation. Hence, a novel quantitative model of situation awareness is firstly proposed based on the system safety control structure of remotely controlled vessel. The data source is greatly limited, but the main result still indicates that the probability of operator lose adequate situation awareness of the autonomous ship is significantly higher than the conventional ship. Finally, the paper provides a probabilistic theory and model for high-level abstractions of situation awareness to guide future evaluation of the navigation safety of autonomous ships.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 1; 165-171
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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:
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
Tytuł:
Określanie krzywizny trajektorii płaskiej statku za pomocą GPS
Determination of ships plane trajectory curvature by GPS
Autorzy:
Banachowicz, A.
Wolski, A.
Banachowicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/210979.pdf
Data publikacji:
2010
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
GPS
trajektoria statku
pozycjonowanie
nawigacja
ship trajectory
positioning
navigation
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.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2010, 59, 2; 107-115
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation and seamanship concepts learned and students’ level of satisfaction in training ship
Autorzy:
Bangalisan, A. A.
Morit, B. O.
Powiązania:
https://bibliotekanauki.pl/articles/24201363.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Maritime Education and Training
training ship
level of satisfaction
seamanship
MET system in Philippines
Bachelor of Science in Marine Transportation
Senior High School (SHS)
marine navigation
Opis:
This study aimed to determine the concepts learned in Navigation and Seamanship as well as the level of satisfaction of students’ in using the training ship in terms of food, accommodation, readiness of venue, quantity of equipment, activities, speakers, and ships’ crew. The respondents of this study were the 129 students of JBLFMU-Arevalo. They were selected through stratified and cluster sampling. A questionnaire was sent to the respondents through e-mail and Facebook messenger to gather the data. The comments of the students were classified according to themes. For BSMT 1 – Familiarization and Ship Tour, in Navigation, the themes are learning the ship nomenclature and manipulating the different navigational equipment onboard, inculcating skills to plan and manage a ship for safety voyage, employing the concepts learned about the various ship positioning to arrive at the port or point of destination, and refining the importance of learning the qualities of a competent navigator. In Seamanship, the themes are enhancing concepts learned about the importance of prioritizing safety on board and learning the International Maritime Law, learning the important purposes and uses of the different navigational equipment on board, improving skills on proper operation of the ship, and uplifting the duties and responsibilities of officers and crew members on board. For BSMT 2, Port and Anchor Watch, in Navigation, the themes are, learning the uses and importance of the different navigational equipment on board, different types of navigation use to navigate accurately, employing the concepts learned about the various ship positioning to arrive at the port or point of destination, uplifting the duties and responsibilities of officers and crew members on board, and defining navigation for watercraft. In Seamanship, the themes are learning about anchor operations, familiarizing different parts of the ship, integrating seamanship skills in navigation, enhancing concepts learned about the importance of prioritizing safety on board, learning mooring operation, and definition of seamanship. For BSMT 3, Navigational Trip, in Navigation, the theme is learning the different navigational equipment on board and for Seamanship, improving seamanship skills. Having different themes for every year level indicates that the students have actually learned various knowledge about Navigation and Seamanship during their stay onboard the training ship. For the students’ level of satisfaction, the grand mean is described as “High”. This means that some aspects are good in terms of food, accommodation, venue, quantity of equipment, activities, speakers, and ships’ crew. This study concludes that the concepts learned by students’ in Navigation and Seamanship varies in each activity. Furthermore, the students were highly satisfied in using the training ship’s amenities in terms of food, accommodation, readiness of venue, quantity of equipment, activities, speakers, and ships’ crew. The researchers recommend another follow-up study to include respondents from other units as well and some other non - JBLFMU/JBLCF students utilizing the training ship to further validate the results, reduce the number of students participating in every activity to optimum to maximize the outcome intended for each activity, and finally, create a multiple choice questionnaire to assess better the concepts learned and to be given personally to the respondents.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 4; 667--671
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Research on Concept of Ship Safety Domain
Autorzy:
Baran, A.
Fişkin, R.
Kişi, H.
Powiązania:
https://bibliotekanauki.pl/articles/117480.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
safety at sea
ship safety domain
ship domain
Dalian Maritime University (DMU)
Maritime University of Szczecin
bibliometric statistics
safety zone
safe navigation
Opis:
This study presents the results of the content analysis of articles related to "Ship Safety Do-main". The content and statistical analysis of 44 articles that published in 21 different journals between 1970 and 2016 were conducted. This study includes various data types such as publishing years of articles, obtaining the type of data, the contribution of authors, the contribution of countries, the contribution of the institution, the rank of the journal, keywords of articles and etc. The content analysis aims to provide necessary indicators for readers, followers, and contributors of relevant discipline and a glimpse of lots of articles. The published articles about ship safety domain are discovered by this study so as to contribute lecturers and researchers interested in navigation especially ship domain concept. The results of the research were revealed that Poland and China are the most contributing countries, Dalian Maritime University and The Maritime University of Szczecin are the most contributing institutions and Ning Wang and Rafal Szlapczynski are the most contributing researchers.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 43-47
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation-Augmented Methods for Safe and Efficient Manoeuvres in Harbour Areas
Autorzy:
Benedict, K.
Kirchhoff, M.
Gluch, M.
Fischer, S.
Schaub, M.
Baldauf, M.
Powiązania:
https://bibliotekanauki.pl/articles/116369.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
manoeuvres in harbour areas
harbour areas
Simulation-Augmented Manoeuvring Design and Monitoring (SAMMON)
Fast-Time Manoeuvring Simulation Technology (FTS)
Co-operative Ship Operation in Integrated Maritime Traffic Systems (COSINUS)
Maritime Unmanned Navigation through Intelligence in Networks (MUNIN)
Innovative Ship Simulation and Maritime Systems (ISSIMS) Navigational Methods Development
Opis:
Safety of navigation is especially challenging and critical when a ship approaches and manoeuvres in harbour areas. Improving the safety especially in the first and last phase of a voyage is crucial and requires measures addressing both the human and technical-technological elements including support systems that shall provide human operators with information relevant for decision making. The present situation is characterized by the introduction of numerous sophisticated technical and support systems often integrated with several components becoming increasingly complex. On the users end, changes are not that obvious and not that rapid as for technology. However, new approaches are under development or already in use. They are characterized by applying and adapting solutions from other transport modes. In this way, tasks and procedures on ships, that are highly safety-relevant and containing high portions of manoeuvring activities have been changed to high back-up procedures as in air planes. For port manoeuvres e.g. the system of pilot/co-pilot was introduced on ferries in a sense that one officer is operating and the other is monitoring and checking the safe performance. In cruise shipping, new structures replacing the traditional rank-based with a flexible system based on job functions. This system creates a kind of a safety net around the person conning the vessel. Each operation is cross checked before execution by one or two other persons. The first obvious consequence is higher costs due to doubling personnel. On the other hand there is also a need for a technology appropriately supporting the checking officer by enabling her or him to monitor what the conning officer is doing. “Fast-Time Manoeuvring Simulation Technology” (FTS) developed at the Institute for Innovative Ship Simulation and Maritime Systems (ISSIMS) has huge potential to fulfil this task. FTS calculates within one second of computing time up to 1000 seconds of real manoeuvring time by a very complex ship-dynamic simulation model for rudder, engine and thruster manoeuvres. It enables prompt prediction of all manoeuvres carried out by the conning officer for the observing officer, too. Predictions of path and motion status allow all officers to see whether the manoeuvring actions have at least the correct tendency or indicating the need for corrections. This new type of support is called Simulation-Augmented Manoeuvring Design and Monitoring (SAMMON) – it allows not only overlooking the next manoeuvring segment ahead but also for the following or even for series of manoeuvring segments. This technology has been used within two research projects: COSINUS (Co-operative Ship Operation in Integrated Maritime Traffic Systems) set out for implementing FTS into integrated ship bridges and to also communicate the manoeuvre plans and display it to VTS centres. Within the European project MUNIN (Maritime Unmanned Navigation through Intelligence in Networks) this technology has been used to investigate if it is possible to steer autonomous ships, in case it would be necessary.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 193-201
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data and situational centric “apps” to improve ship navigation
Autorzy:
Bergmann, M.
Powiązania:
https://bibliotekanauki.pl/articles/135571.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
data centric
situational centric
apps
ship navigation
e-navigation
type approval
Opis:
The current systems supporting navigation on board of ships are built on the classic concept for equipment: the system is developed, tested, type approved and installed; and from that time on it is used with no or little modifications. The systems are using data, but the data streams do not influence the system behavior. Looking at other industries, a regime of software and system maintenance has been established which allows more rapid updates. System development in the IT arena is moving towards a more modular approach, encapsulating individual components to ease the implementation and delivery of updates with a limited system-wide impact. This key concept is lately often referred to as the “app-concept”. In addition, more and more systems are using data to adjust system behavior to support a situational centric approach for decision support. The e-Navigation development asks for exactly that: a way to improve innovation, while ensuring system stability for the navigational components used by the navigator on the bridge, and a concept to increase situational awareness. A key aspect of the success of new systems will be the ability to convert data into information as needed in any given situation, creating the necessary knowledge for intelligent decision making and increasing the competence of a navigator. The paper will focus on the following topics: the classic monolithic equipment paradigm; modern system architecture, using components and app-concepts; advantages of using data streams to enable situational driven tool enhancements; and the app-concepts supporting the situational centric information presentation.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 61-67
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Satellite Navigation Techniques for Vessel’s Drift Determination in Piloting Areas
Autorzy:
Blokus-Roszkowska, A.
Jurdziński, M.
Powiązania:
https://bibliotekanauki.pl/articles/117034.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Satellite Navigation Technics
Global Navigation Satellite System (GNSS)
Pilot Navigation
Piloting Area
Vessel's Drift
satellite navigation system
Ship Control System
Global Positioning System GPS
Opis:
The paper deals with use the satellite navigation system for increase safety of navigation in difficult areas. There have been presented an algorithm to ship control procedure during environmental disturbances in narrow passages.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 389-392
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Modernization of the Mrzezyno Seaport. Applaying Simulation Studies to Define the Variants of the Expansion of the Entrance Breakwater
Autorzy:
Boć, R.
Gucma, L.
Bąk, A.
Powiązania:
https://bibliotekanauki.pl/articles/320645.pdf
Data publikacji:
2017
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
model of manoeuvring a ship
navigation safety
designing seaports
breakwater optimization
Opis:
Objective reasons, such as climatic changes, larger vessels, sometimes the impracticality of the current solutions, determine the interest of decision-makers in rebuilding the existing ports and breakwaters. Tested simulation models allow for a thorough analysis of the possible modernization variants taking into account the variability of basic parameters. The article presents research results related to the optimization of the Mrzezyno seaport with respect to navigation safety and the possibility of larger vessels calling at the port after its modernization. In the paper, real time simulation methods based on manoeuvre simulators were applied. Two different variants that can be implemented from the technical point of view were studied. Following a multidimensional analysis that took into consideration increased comfort of ship manoeuvres in the port and navigation safety, one variant was indicated as the optimum. The aim of the research results is to help design new solutions in the case of the modernization of the Mrzezyno seaport.
Można wskazać wiele obiektywnych przyczyn powodujących zainteresowanie decydentów przebudową istniejących falochronów, a niekiedy znacznych fragmentów portów. Należą do nich między innymi zmiany klimatyczne, zwiększanie się wymiarów statków, a niekiedy niepraktyczność aktualnych rozwiązań. W takich przypadkach bardzo przydatne są metody symulacyjne, które pozwalają na gruntowną analizę możliwych wariantów modernizacji, biorąc pod uwagę zmienność podstawowych parametrów. W artykule przedstawiono wyniki badań nad optymalizacją portu morskiego Mrzeżyno w kontekście bezpieczeństwa nawigacji i możliwości obsługi większych statków po wprowadzeniu modernizacji. Zastosowano metody symulacji manewrów w czasie rzeczywistym, rozważając dwa różne warianty, które z technicznego punktu widzenia mogłyby zostać wdrożone. Uwzględniając wielostronną analizę możliwości ułatwienia manewrów w porcie oraz bezpieczeństwo nawigacyjne, wskazano wariant optymalny.
Źródło:
Annual of Navigation; 2017, 24; 269-284
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ship course stabilization by feedback linearization with adaptive object model
Autorzy:
Borkowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/259940.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship course stabilization
feedback linearization controller
GRBF
safety of navigation
Opis:
The algorithm of ship course stabilization herein presented is based on a feedback linearization controller with adaptive object model. The described method, consisting in current approximation of unknown object model functions by neuro-fuzzy approximators, represents a new generation of adaptive control methods. The implementation of this algorithm, which may constitute an executive module of a navigational decision support system, will contribute to a higher degree of automation and navigational safety improvement.
Źródło:
Polish Maritime Research; 2014, 1; 14-19
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy control for ship motion
Autorzy:
Broel-Plater, B.
Powiązania:
https://bibliotekanauki.pl/articles/320954.pdf
Data publikacji:
2001
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
sterowanie rozmyte
ruch statku
wiatr
navigation
fuzzy control
ship motion
wind
Opis:
In the article a fuzzy-logic based algorithm for ship motion control is presented. The system operates in an open-closed loop control system with set-point changes and wind action being compensated. a detailed description of the feedback loop controller is given. The controller has a hierarchical structure, in which independent coordinated fuzzy-logic controllers for vessel motion components are situated. The controllers perform in two modes: as velocity controllers and position controllers. The paper is completed with computer simulations.
Źródło:
Annual of Navigation; 2001, 3; 31-40
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model tests for shallow-water ship maneuverability in Three Gorges Reservoir
Autorzy:
Cai, C.
Cai, X.
Li, Y.
Powiązania:
https://bibliotekanauki.pl/articles/259922.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
shallow-water test of ship model
simulated computation
maneuverability calibration
scale effect
Z shape test
K and T indexes
navigation safety
Opis:
This paper conducts calibration tests on the shallow-water maneuverability of 1:100 ship models for the typical navigation fleets in Three Gorges Reservoir. Major influential factors for the maneuverability similitude between models and prototypes and for scale effect were identified. A correction method for model scale was also established through model tests. Test results indicate that, by correcting the model scales of various fleets based on scale effect, the maneuverability indexes K’ (dimensionless of K) and T’ (dimensionless of T) of ship models are suitable for shallowwater tests, and properly reflect the maneuvering characteristics of prototypes. The findings provide an experimental basis for the navigation safety in Three Gorges Reservoir.
Źródło:
Polish Maritime Research; 2015, S 1; 136-140
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 110

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