Results 21 to 30 of about 719,973 (302)
A Deep Learning Method for Short-Term Dynamic Positioning Load Forecasting in Maritime Microgrids
Applied Sciences, 2020 The dynamic positioning (DP) system is a progressive technology, which is used in marine vessels and maritime structures. To keep the ship position from displacement in operation mode, its thrusters are used automatically to control and stabilize the ...
Mojtaba Mehrzadi +8 more
doaj +1 more source
Advanced Positioning and Location based services in 4G Mobile-IP Radio Access Networks [PDF]
, 2004 2004 IEEE 15TH IEEE International Symposium on personal, indoor and mobile radio communications (PIMRC 2004), Barcelona, Spain, 5-8 september 2004.This paper proposes an evolved architecture from 3G networks to provide basic and advanced positioning ...
Montilla Bravo, Alberto +2 more
core +3 more sources
Intelligent control algorithm for ship dynamic positioning
Archives of Control Sciences, 2014 Ship motion in the sea is a complex nonlinear kinematics. The hydrodynamic coefficients of ship model are very difficult to accurately determine. Establishing accurate mathematical model of ship motion is difficult because of changing random factors in ...
Meng Wang +3 more
doaj +1 more source
Review of Dynamic Positioning Control in Maritime Microgrid Systems
Energies, 2020 For many offshore activities, including offshore oil and gas exploration and offshore wind farm construction, it is essential to keep the position and heading of the vessel stable.
Mojtaba Mehrzadi +5 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 Trajectory tracking is a fundamental task of the dynamic positioning (DP) system. This paper studies the problem of trajectory tracking of DP ships constrained by control inputs under environmental disturbances.
Quan Zhang, Chen Guo
doaj +1 more source
Journal of Marine Science and Engineering, 2022 Focusing on dynamic positioning (DP) systems for ships, which are subject to environmental disturbances and actuator constraints, this paper presents a finite-time controller that uses a disturbance observer with the aid of a backstepping technique ...
Yufang Zhang +4 more
doaj +1 more source
A Vision-Based Method for Simultaneous Instance Segmentation and Localization of Indoor Objects
Applied Sciences, 2023 Visual-based positioning technology plays a pivotal role in spatial artificial intelligence, facilitating precise perception and comprehension of the physical world for robotic platforms and augmented reality devices.
Shuang Li +4 more
doaj +1 more source
Design and realization of precise indoor localization mechanism for Wi-Fi devices [PDF]
, 2016 Despite the abundant literature in the field, there is still the need to find a time-efficient, highly accurate, easy to deploy and robust localization algorithm for real use. The algorithm only involves minimal human intervention. We propose an enhanced
Calveras Augé, Anna M. +5 more
core +1 more source
Workspace optimization of azimuth thrusters applied by dynamic positioning
Zhongguo Jianchuan Yanjiu, 2020 Objectives In order to make the dynamic positioning of azimuth thrusters respond to external environmental forces in time, avoid the large-scale rotation of the thrusters and achieve high precision dynamic fixed-point positioning control, research on the
SHANG Liubin, WANG Wei, LIU Zhihua
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Identification of Dynamically Positioned Ships [PDF]
IFAC Proceedings Volumes, 1995 Todays model-based dynamic positioning (DP) systems require that the ship and thruster dynamics are known with some accuracy in order to use linear quadratic optical control theory. However, it is difficult to identify the mathematical model of a dynamically posititmed (DP) ship since the ship is not persistently excited under DP.
Thor I. Fossen +2 more
openaire +3 more sources