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Wyszukujesz frazę "ship motion" wg kryterium: Temat


Tytuł:
A formal description of navigational process
Autorzy:
Jackowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/320952.pdf
Data publikacji:
2001
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
ruch statku
sterowanie
modele matematyczne
navigation
ship motion
steering
mathematical model
Opis:
In this paper there is undertaken an attempt to present the formal description of the ship’s navigation process. This formal description takes into account not only all the most important ship’s characteristics that influence the ship’s motion but also all the most important environmental characteristics influencing the ship’s behaviour at sea. The formal description comprises the following issues: ship’s navigation process, navigational information, dynamic of the ship’s motion, equations describing the ship’s navigation process, and mathematical models of ship’s navigation process.
Źródło:
Annual of Navigation; 2001, 3; 41-74
1640-8632
Pojawia się w:
Annual of Navigation
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:
Effects of ship motion on acoustic remote sensing
Autorzy:
Tegowski, J.
Zielinski, A.
Powiązania:
https://bibliotekanauki.pl/articles/332057.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ship motion
acoustic remote sensing
Opis:
Ship motion affects quality of acoustic data collected by various acoustic remote sensing systems used for bottom and fisheries surveying. The angular position of an acoustic beam changes in time from its nominal position vertical to sea surface. This motion affects the acoustic returns from the bottom and other targets by changing their intensity and arrival times. In this paper we illustrate these effects on bottom returns obtained using single beam sonar.
Źródło:
Hydroacoustics; 2003, 6; 205-214
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of power demand for ship motion control system of sea mining ship fitted with tubular winning system
Autorzy:
Bortnowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/260362.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sea mining ship
tubular winning system
action of sea environment
thrust of ship propellers
power of ship motion control system
Opis:
One of the crucial systems of sea mining ship for poly-metallic concretions is its motion control system (SMC). Power of such system depends on sea environment characteristics and main dimensions of the ship. It can be expected that it will have important influence on total power of the ship’s power plant and in effect on the mining ship’s dimensions. In this paper is presented one of the possible ways of preliminary estimation of design power of SMC system for sea mining ship. Since details of design solution of such system for the ship in question are unknown (ships of the kind have not been built so far) the presented results should be considered to be the first estimation of the order of the power demand.
Źródło:
Polish Maritime Research; 2007, 4; 24-30
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Analysis of the wind influence on the ship turning manoeuvers on port turning basins
Analiza wpływu wiatru na manewr obracania statku na obrotnicy portowej
Autorzy:
Kornacki, J.
Powiązania:
https://bibliotekanauki.pl/articles/360385.pdf
Data publikacji:
2008
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
manewrowanie statkiem
ruch statku
hydrodynamika statku
aerodynamika statku
wiatr
ship manoeuvring
ship motion
ship hydrodynamics
ship aerodynamics
wind
Opis:
The paper presents the problem of the wind influence on a ship during the turning manoeuvre and the influence on this manoeuvre. Attention has been paid to the necessity of attaching larger attention to the influence of the wind during the turning manoeuvre. The analysis of the wind influence on this manoeuvre has been conducted.
W artykule został podjęty problem oddziaływania wiatru na statek podczas manewru obracania i wpływ na ten manewr. Zwrócono uwagę na konieczność przywiązywania większegoznaczenia na oddziaływanie wiatru podczas manewru obracania. Przeprowadzono analizę wpływu wiatru na ten manewr.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2008, 13 (85); 40-44
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of optimum hull form for passenger car ferry with regard to its sea-keeping qualities and additional resistance in waves
Autorzy:
Cepowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/258898.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sea-keeping qualities
roll-on/roll-off ferry ship
rolling
transverse accelerations
vertical accelerations
motion sickness index
additional resistance in waves
ship hull form
ship design parameters
artificial neural networks
fuzzy logic
Opis:
This paper presents a method which makes it possible to determine optimum hull form of passenger car ferry with regard to selected sea-keeping qualities and additional resistance in waves. In the first phase of investigations a hull form characterized by the highest qualities was selected from the list of similar ships. Next, its optimum dimension ratios were determined. Design criteria were formulated by using a method based on deterministic scenarios, but objective functions of partial targets were determined in the form of artificial neural networks. To select the best design variants elements of fuzzy logic were used, that made it possible a.o. to show merits of the design by means of linguistic variables. Such approach made it possible to find the best hull form and its dimensions from the point of view of all considered criteria simultaneously.
Źródło:
Polish Maritime Research; 2008, 2; 3-11
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CFD Based Hull Hydrodynamic Forces for Simulation of Ship Manoeuvres
Autorzy:
Tabaczek, T.
Gornicz, T.
Kulczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/117623.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Manoeuvring
Simulation of Ship Manoeuvres
Equations of Ship's Movement
Hydrodynamic Forces
CFD Computations
Hydrodynamic Characteristics
Ship's Motion
mathematical model
Opis:
There have been developed numerous mathematical models describing the motion of a ship. In opinion of present authors the CFD is mature enough to determine with confidence the hydrodynamic characteristics necessary to simulate ship manoeuvres. In this paper the authors present the attempt to determine the hull hydrodynamic forces using the results of CFD computations of ship flow. Results show qualitative agreement with reference data and reveal shortcomings due to simplifying assumptions applied in CFD computations.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 31-35
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of FTS model of ship motion based on expert shiphandling knowledge
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/320627.pdf
Data publikacji:
2009
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
system ekspercki
ruch statków
kontroler o rozmytej logice
expert system
ship motion
fuzzy logic controller
Opis:
The paper presents a concept of FTS model of ship motion reflecting navigator's decision process while entering a Świnoujscie harbour on specific ship type at given hydrometeorological conditions. The conceptual model has been based on the fuzzy logic controller with expert database formed by manoeuvres obtained from the real-time non-autonomous trials classified in relation to expert manoeuvre impact on ship's advance, lateral and rotation speed and her position in reference to the present ship status.
Źródło:
Annual of Navigation; 2009, 15; 117-124
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring Simulation on the Bridge for Predicting Motion of Real Ships and as Training Tool in Ship Handling Simulators
Autorzy:
Benedict, K.
Kirchhoff, M.
Gluch, M.
Fischer, S.
Baldauf, M.
Powiązania:
https://bibliotekanauki.pl/articles/116460.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Manoeuvring
Manoeuvring Simulator
Predicting Motion
Real Ships
Training Tool
ship handling simulator
Navigational Bridge
Full Mission Bridge Simulator (FMBS)
Opis:
International sea transport has growing rapidly during the period of the last decade. Ships became larger and wider and its container capacity is still increasing to 12.000 TEU and even more. To navigate such vessels safely from port to port and specifically within the ports more and more enhanced computer-based systems are installed on the ships navigational bridges. Prediction tools are very helpful and already in use on ships for a long time. However, the simplification of existing predictions allows restricted use only and do not include the immediate response on changes of rudder and engine. Within this paper investigations into the feasibility and user acceptance of newly developed layout of navigation display will be introduced and selected results of simulation studies testing the influence on manoeuvre performance dependent on different kind of prediction functions will be discussed. Examples will be given for results from test trials in the full mission ship handling simulator of the Maritime Simulation Centre Warnemunde and a concept for the application of the developed .tools for purposes of collision avoidance is described.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 25-30
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the modeling of car passenger ferryship design parameters with respect to selected sea-keeping qualities and additional resistance in waves
Autorzy:
Cepowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/258828.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sea-keeping qualities
roll-on/roll-off ferryship
rolling
motion sickness index
lateral accelerations
additional resistance in waves
ship design parameters
modeling
artificial neural networks
optimization
Pareto method
Opis:
This paper presents the modeling of car passenger ferryship design parameters with respect to such design criteria as selected sea-keeping qualities and additional resistance in waves. In the first part of the investigations approximations of selected statistical parameters of design criteria of ferryship were elaborated with respect to ship design parameters. The approximation functions were obtained with the use of artificial neural networks. In the second part of the investigations design solutions were searched for by applying the singleand multi-criterial optimization methods. The multi-criterial optimization was performed by using Pareto method. Such approach made it possible to present solutions in such form as to allow decision makers (shipowner, designer) to select solutions the most favourable in each individual case.
Źródło:
Polish Maritime Research; 2009, 3; 3-10
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence analysis of changes of design parameters of passenger-car ferries on their selected sea-keeping qualities
Autorzy:
Cepowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/259447.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
passenger-car ferry
design guidelines
preliminary design stage
sea-keeping qualities
rolling
sea-sickness (motion-sickness) index
vertical accelerations
ateral accelerations
ship main dimensions
Opis:
The main scientific aim of this research was to elaborate design guidelines which could make it possible to improve sea-keeping qualities of passenger-car ferries. The searchedfor design guidelines were prepared in the form of regression functions as well as artificial neural networks on the basis of the results obtained from calculations with the use of numerical methods based on the theory of planar flow around a body. The guidelines make it possible to predict ship roll, sea-sickness index, lateral and vertical accelerations on the basis of quantities available in the preliminary stage of ship design.
Źródło:
Polish Maritime Research; 2010, 1; 25-32
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of the influence of propeller emergence on its thrust reduction during ship navigation on waves
Prognozowanie wpływu wynurzania się śruby napędowej na spadek naporu podczas pływania statku na fali
Autorzy:
Szelangiewicz, T.
Żelazny, K.
Powiązania:
https://bibliotekanauki.pl/articles/359277.pdf
Data publikacji:
2010
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
kołysania statku na fali
pionowy ruch względny
ship motions on waves
vertical relative motion
Opis:
During ship's navigation on waves some relative motions occur resulting in propeller emergence, which in consequence reduces the propeller thrust. The article presents an algorithm for calculating the propeller thrust reduction as a result of ship motions on waves. The algorithm has preset parameters: significant wave height Hs, period T1 and geographical direction.
Podczas pływania statku na fali powstają m.in. ruchy względne, które powodują wynurzanie się śruby napędowej, a w konsekwencji spadek naporu. W artykule przedstawiono algorytm obliczania spadku naporu śruby w wyniku kołysań statku na fali o zadanych parametrach: wysokość znacząca Hs, okres T1 i kierunek geograficzny.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2010, 21 (93); 83-87
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The propeller thrust and speed reduction as a result of the propeller emergence on a given ocean route
Spadek naporu i prędkości statku w wyniku wynurzania się śruby napędowej na danej linii żeglugowej
Autorzy:
Szelangiewicz, T.
Żelazny, K.
Powiązania:
https://bibliotekanauki.pl/articles/360413.pdf
Data publikacji:
2010
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
kołysania statku na fali
pionowy ruch względny
ship motions on waves
vertical relative motion
Opis:
During ship navigation on waves its relative motions occur which result in propeller emergence. This, in consequence, causes the propeller thrust drop. The article presents the results of calculations of the propeller thrust drop and ship service speed reduction on a preset ocean route where specific mean statistic weather parameters occur.
Podczas pływania statku na fali powstają m.in. ruchy względne, które powodują wynurzanie się śruby napędowej, a w konsekwencji spadek naporu. W artykule przedstawiono algorytm obliczania spadku naporu śruby w wyniku kołysań statku na fali o zadanych parametrach: wysokość znacząca Hs, okres T1 i kierunek geograficzny
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2010, 22 (94); 63-66
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modele z filtrem Kalmana i rozmyte w systemach dynamicznego pozycjonowania
Kalman filter and fuzzy models in dynamic positioning systems
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/350644.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
dynamiczne pozycjonowanie
modelowanie ruchu statku
filtr Kalmana
logika rozmyta
dynamic positioning
ship motion modeling
Kalman filter
fuzzy logic
Opis:
Dynamiczne pozycjonowanie statku to proces obejmujący dwa problemy: 1) utrzymania stałych, zadanych parametrów pozycji i kursu oraz 2) podążania po wyznaczonej trajektorii ruchu. Do tego celu wykorzystuje się różnorodne urządzenia napędowo-sterowe (pędniki okrętowe i stery). W artykule przedstawiono różne metody numeryczne rozwiązania obu problemów sterowania jednostkami oceanotechnicznymi korzystając z technik filtracji i logiki rozmytej.
Dynamic positioning of a ship is a process comprising two problems: 1) forcing the output of the ship to maintain a constant reference position and heading and 2) path following. In both cases the control is achieved using combination of several thrusters and rudders. The article presents various solutions to these control problems of offshore vessels, utilizing numerical filtration and fuzzy methods.
Źródło:
Górnictwo i Geoinżynieria; 2011, 35, 4/1; 411-426
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł

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