Temat: Dynamic Ship Positioning - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Dynamically positioned ship steering making use of backstepping method and artificial neural networks
Autorzy:: Witkowska, A.
Rynkiewicz, T. N.
Powiązania:: https://bibliotekanauki.pl/articles/260171.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: backstepping
neural networks
RBF
dynamic ship positioning
Opis:: The article discusses the issue of designing a dynamic ship positioning system making use of the adaptive vectorial backstepping method and RBF type artificial neural networks. In the article, the backstepping controller is used to determine control laws and neural network weight adaptation laws. The artificial neural network is applied at each time instant to approximate nonlinear functions containing parametric uncertainties. The proposed control system does not require precise knowledge of the model of ship dynamics and external disturbances, it also eliminates the problem of analytical determination of the regression matrix when designing the control law with the aid of the adaptive backstepping procedure.
Źródło:: Polish Maritime Research; 2018, 4; 5-12
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analysis of impact of ship model parameters on changes of control quality index in ship dynamic positioning system
Autorzy:: Rynkiewicz, Tacjana Niksa
Witkowska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/259774.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: backstepping
ship dynamic positioning
system’s susceptibility
Opis:: In this work there is presented an analysis of impact of ship model parameters on changes of control quality index in a ship dynamic positioning system designed with the use of a backstepping adaptive controller. Assessment of the impact of ship model parameters was performed on the basis of Pareto-Lorentz curves and ABC method in order to determine sets of the parameters which have either crucial, moderate or low impact on objective function. Simulation investigations were carried out with taking into account integral control quality indices.
Źródło:: Polish Maritime Research; 2019, 1; 6-14
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Dynamic positioning system design for “Blue Lady”. Simulation tests
Autorzy:: Tomera, M.
Powiązania:: https://bibliotekanauki.pl/articles/259096.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: dynamic positioning system
marine systems
ship control
Opis:: The dynamical positioning system is a complex control consisting of a number of components, including: filters, observers, controllers, and propeller allocation systems. The design and preliminary analysis of operational quality of system operation are usually done based on numerical simulations performed with the aid of the mathematical model of the ship. The article presents a concept of the dynamic positioning system applied to steering the training ship Blue Lady used for training captains in the ship handling research and training centre owned by the Foundation for Safety of Navigation and Environment Protection in Ilawa/Kamionka. The simulation tests performed in the numerical environment of Matlab/Simulink have proved the usability of the designed system for steering a ship at low speed.
Źródło:: Polish Maritime Research; 2012, S 1; 57-65
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Nonlinear observers design for multivariable ship motion control
Autorzy:: Tomera, M.
Powiązania:: https://bibliotekanauki.pl/articles/259089.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: extended Kalman filter
nonlinear observers
ship control
dynamic positioning
Opis:: This paper presents the designs of two observers, which are: the extended Kalman filter and the nonlinear passive observer. Based on the measured values of ship position and heading, the observers estimate the surge, sway and yaw velocities of the ship motion. The observers make use of the simplified nonlinear mathematical model of ship motion in which the neglected ship dynamics and disturbances are modelled using bias. The designed observers firstly have been simulated on a computer model where their parameters were calibrated, and then were implemented on the physical model of the training ship “Blue Lady” in the ship handling centre in Ilawa-Kamionka. The comparative analysis was done with respect to the estimated variables describing the ship motion in three directions: surge, sway and yaw.
Źródło:: Polish Maritime Research; 2012, S 1; 50-56
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

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