Results 11 to 20 of about 174,445 (306)

RFID dynamic positioning method [PDF]

open access: yesTongxin xuebao, 2013
A novel proximity method-RFID dynamic positioning method was presented,using a moving radio frequency identification (RFID) reader to accurately position the target based on reference tag arrays.The major advantage of the method was that through reading ...
Cheng LI, Song-rong QIAN
doaj   +4 more sources

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   +3 more sources

Intelligent control algorithm for ship dynamic positioning

open access: yesArchives 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   +3 more sources

Determining the likelihood of incidents caused by human error during dynamic positioning drilling operations [PDF]

open access: yes, 2021
[EN] The probability of a human-caused incident occurring during dynamic positioning (DP) drilling operations is determined in this paper using binary logistic regression models built with data on 42 incidents that took place during the period 2011 ...
Gómez Solaeche, Miguel Ángel   +3 more
core   +1 more source

Electron dynamics at a positive ion [PDF]

open access: yesPhysical Review E, 2008
Submitted to Phys.
Dufty, James W.   +3 more
openaire   +4 more sources

Anti-Disturbance Lyapunov-Based Model Predictive Control for Trajectory Tracking of Dynamically Positioned Ships

open access: yesJournal 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

Finite-Time Controller Design for the Dynamic Positioning of Ships Considering Disturbances and Actuator Constraints

open access: yesJournal 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

open access: yesApplied 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

Workspace optimization of azimuth thrusters applied by dynamic positioning

open access: yesZhongguo 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
doaj   +1 more source

Dynamic Position Encoding for Transformers

open access: yesCoRR, 2022
Recurrent models have been dominating the field of neural machine translation (NMT) for the past few years. Transformers \citep{vaswani2017attention}, have radically changed it by proposing a novel architecture that relies on a feed-forward backbone and self-attention mechanism.
Joyce Zheng   +2 more
openaire   +3 more sources

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