Results 1 to 10 of about 13,467 (267)

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   +3 more sources

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   +3 more sources

Ship Motions and Wave Loads [PDF]

open access: yesJournal of Marine Science and Engineering, 2023
Seagoing ships operate in ocean waves for the majority of their service lives [...]
Jialong Jiao, Tahsin Tezdogan
openaire   +2 more sources

A Prediction Method of Ship Motion Based on LSTM Neural Network with Variable Step-Variable Sampling Frequency Characteristics

open access: yesJournal of Marine Science and Engineering, 2023
In active heave compensation, in order to realize the smooth control of the heave compensation platform, it is necessary to use the ship motion measurement system to accurately obtain the ship displacement signal, invert the ship displacement signal, and
Chongyang Han, Xiong Hu
doaj   +1 more source

Semantic Recognition of Ship Motion Patterns Entering and Leaving Port Based on Topic Model

open access: yesJournal of Marine Science and Engineering, 2022
Recognition and understanding of ship motion patterns have excellent application value for ship navigation and maritime supervision, i.e., route planning and maritime risk assessment.
Gaocai Li   +5 more
doaj   +1 more source

Difference in ship motion and wave load in long and short crested irregular waves

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectiveTo investigate ship motion and load responses in realistic 3D waves and overcome the limitations of the traditional 2D wave assumption, this paper develops a method for predicting ship motion and load responses in short-crested waves.
Jialong JIAO   +3 more
doaj   +1 more source

An Absolute Displacement Measurement Method and Its Application in Ship Motion Measurement

open access: yesJournal of Marine Science and Engineering, 2023
Due to the fact that there is no static reference point in ocean space, relative measurement sensors such as laser sensors cannot be applied to the measurement of ship motion.
Chongyang Han, Xiong Hu
doaj   +1 more source

Locally Weighted Non-Parametric Modeling of Ship Maneuvering Motion Based on Sparse Gaussian Process

open access: yesJournal of Marine Science and Engineering, 2021
This paper explores a fast and efficient method for identifying and modeling ship maneuvering motion, and conducts a comprehensive experiment. Through the ship maneuvering test, the dynamics interaction between ship and the environment is obtained. Then,
Zhao Zhang, Junsheng Ren
doaj   +1 more source

Parameter identification of ship motion mathematical model based on full-scale trial data

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2022
Using the full-scale trial data of vessel YUKUN, a parameter identification scheme, Support Vector Regression (SVR) combined with modified grey wolf optimizer (MGWO), is proposed for identifying ship motion model.
Yao Meng, Xiufeng Zhang, Jinxin Zhu
doaj   +1 more source

A NUMERICAL STUDY ON THE OPEN WATER PERFORMANCE OF A PROPELLER WITH SINUSOIDAL PITCH MOTION

open access: yesBrodogradnja, 2020
When a ship operates in waves, the ship moves with 6 degrees-of-freedom, and a propeller at the stern of the ship cannot avoid moving due to the ship motion.
Kwang-Jun Paik   +4 more
doaj   +1 more source

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