Results 41 to 50 of about 157,311 (159)

Developed Methodology for Ship Retrofitting (Case Study: RV Baruna Jaya I)

open access: yesKapal, 2023
Ship retrofitting is one alternative solution to extend a ship’s life. Several component replacements were performed in the retrofitting process, remodelings to the ship’s main dimension, and state-of-the-art equipment and technology were added.
Dwitya Harits Waskito   +4 more
doaj   +1 more source

Nonlinear Gains Recursive Sliding Mode Dynamic Positioning of Ships with Uncertainties and Input Saturation

open access: yesJournal of Marine Science and Engineering
To address dynamic positioning (DP) challenges encountered by ships navigating amid unknown model parameters, environmental disturbances, and input saturation, this study proposes a nonlinear gains recursive sliding mode (RSM) DP control law. Within this
Fuwen Su, Huajun Zhang
doaj   +1 more source

Positioning dynamics

open access: yesBestuurskunde
Positioning Dynamics: Dealing with power and perspectives in collaborative decision-making on preventive care In healthcare, something magical is often expected from collaborative decision-making: collaboration could enable us to bridge different power positions and perspectives and make decisions on an equal footing.
openaire   +3 more sources

Fixed-Time Path-Following-Based Underactuated Unmanned Surface Vehicle Dynamic Positioning Control

open access: yesJournal of Marine Science and Engineering
The development of dynamic positioning (DP) algorithms for an unmanned surface vehicle (USV) is attracting great interest, especially in support of complex missions such as sea rescue.
Shuai Zheng   +4 more
doaj   +1 more source

Prescribed-Time Dynamic Positioning Control for USV with Lumped Disturbances, Thruster Saturation and Prescribed Performance Constraints

open access: yesRemote Sensing
This work studies the dynamic positioning (DP) control issue of unmanned surface vessels subjected to thruster saturation, error constraints, and lumped disturbances composed of time-varying marine environmental disturbances and model parameter ...
Bowen Sui, Jianqiang Zhang, Zhong Liu
doaj   +1 more source

Design and Implementation of Pseudo-Inverse Thrust Allocation Algorithm for Ship Dynamic Positioning

open access: yesIEEE Access, 2020
The pseudo-inverse method cannot optimize the angle and needs to give the azimuth angle artificially, therefore, when the dynamic positioning system has variable vector propellers and rudders, the pseudo-inverse method cannot be applied to the full ...
Baoyu Ye   +3 more
doaj   +1 more source

The Effect of Wind–Wave Correlations on the Optimal Thruster Location for Offshore Vessels

open access: yesJournal of Marine Science and Engineering
Offshore vessels are nowadays equipped with dynamic positioning systems, meaning they have additional thrusters dedicated to the station keeping of the unit.
Francesco Mauro   +1 more
doaj   +1 more source

Dynamic Positioning and Optimization of Magnetic Target Based on Binocular Vision

open access: yesMachines
Aiming at the problems of visual occlusion, reduced positioning accuracy and pose loss in the dynamic scanning process of aviation large components, this paper proposes a binocular vision dynamic positioning method based on magnetic target.
Jing Li   +4 more
doaj   +1 more source

EFFECTS OF DIFFERENT WAVE SPECTRA ON DYNAMIC POSITIONING ACCURACY

open access: yesBrodogradnja, 2018
To achieve high accuracy of positioning method for ships which have good mobility and are uninfluenced by the water depth, the dynamic positioning system has come into being.
Xinkuan Yan, Chaohe Chen, Tianhui Fan
doaj   +1 more source

Particle Swarm Optimization of a Passivity-Based Controller for Dynamic Positioning of Ships

open access: yesApplied Sciences, 2020
Dynamic positioning (DP) control system is an essential module used in offshore ships for accurate maneuvering and maintaining of ship’s position and heading (fixed location or pre-determined track) by means of thruster forces being generated by ...
Mutaz Ryalat   +2 more
doaj   +1 more source

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