Results 11 to 20 of about 427,939 (206)

Machine Learning for Short-Term Prediction of Ship Motion Combined with Wave Input

open access: yesApplied Sciences, 2023
There is a response relationship between wave and ship motion. Based on the LSTM neural network, the mapping relationship between the wave elevation and ship roll motion is established. The wave elevation and ship motion duration data obtained by the CFD
Ximin Tian, Yang Song
doaj   +1 more source

Model Predictive Control of a Shipborne Hydraulic Parallel Stabilized Platform Based on Ship Motion Prediction

open access: yesIEEE Access, 2020
Shipborne stabilized platform is an important equipment to ensure the stability of shipborne equipment relative to inertial coordinate system. This paper presents a model predictive control strategy based on ship motion prediction (MPMPC) for ship ...
Hongbin Qiang   +4 more
doaj   +1 more source

Survey of ship platoon cooperative control

open access: yesZhongguo Jianchuan Yanjiu, 2023
The ship platoon will become an important form of water transport in the future. This paper analyzes the characteristics and control principle of ship platoon cooperative control, and analyzes the current situation and methods in the four aspects of ship-
Xiumin CHU   +5 more
doaj   +1 more source

Design and Experimental Testing of a Free-Running Ship Motion Control Platform

open access: yesIEEE Access, 2018
In recent years, ship motion control has been used in unmanned merchant ships. It is a key issue in the sailing performance and navigation cost of unmanned vessels.
Jian Zheng, Fei Meng, Yun Li
doaj   +1 more source

Study of Two Ships Approaching Process and Towing Motion under Wave Action

open access: yesJournal of Marine Science and Engineering, 2022
The rescue of ships in distress at sea relies mainly on rescue vessels, which includes the approaching process and the towing motion of the two ships. Ship rescue can be reduced to a two-ship problem, primarily involving the relative motion between ships
Shengtao Chen   +4 more
doaj   +1 more source

Optimal Universal Controllers for Roll Stabilization [PDF]

open access: yes, 2020
Roll stabilization is an important problem of ship motion control. This problem becomes especially difficult if the same set of actuators (e.g. a single rudder) has to be used for roll stabilization and heading control of the vessel, so that the roll ...
Cao, Ming   +2 more
core   +2 more sources

CFD simulation of ship turning motion in waves

open access: yesZhongguo Jianchuan Yanjiu, 2019
[Objectives] The ship turning motion can reflect the steerability of the ship during navigation and is closely related to the ship navigation safety.[Methods] In this paper, the direct numerical simulation of the free turning motion of the standard ship ...
Wang Jianhua, Wan Decheng
doaj   +1 more source

Dynamic Characteristics Analysis and Mooring System Optimization of Wreck Salvage in Off-Bottom Stage Based on Seabed Resistance Force Time History

open access: yesShanghai Jiaotong Daxue xuebao, 2023
In this paper, a method for analyzing the dynamic characteristics of the sunken ship salvage system based on the accurate time history of the seabed resistance force is proposed.
XIN Shangzhe, WANG Lei, FAN Jinyu, ZHOU Dongrong, CHEN Shihai, ZHU Xiaodong
doaj   +1 more source

An Unscented Kalman Filter Online Identification Approach for a Nonlinear Ship Motion Model Using a Self-Navigation Test

open access: yesMachines, 2022
This paper proposes a method for the online parameter identification of nonlinear ship motion systems. First, the motion system of a ship is nonlinear, and in the course of sailing, the motion parameters of the ship will change with the change of the ...
Jian Zheng   +4 more
doaj   +1 more source

Dynamic Interaction of a Heavy Crane and a Ship in Wave Motion [PDF]

open access: yesModeling, Identification and Control, 2018
Previous work on the dynamics of vehicle-manipulator systems is extended to offshore ships with heavy cranes. The proposed method is based on a Newton-Euler formulation where the forces of constraint are eliminated using projection matrices based on the ...
Geir Ole Tysse, Olav Egeland
doaj   +1 more source

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