Results 11 to 20 of about 157,311 (159)
IEEE Access, 2022 In this paper, different power balance control methods for hybrid marine vessels are analyzed. First, the power grid of a marine vessel is modeled using MATLAB and Simulink. Simulations are then performed using real power plant load data captured from an
Jan-Henri Montonen +6 more
doaj +1 more source
Modeling Techniques and Control Strategies for Jack-Up Rig: A State of the Art and Challenges
IEEE Access, 2021 In recent years, for many offshore projects, including offshore oil and gas exploration and offshore wind farm construction, it is necessary to control the position of elevating of Jack-up Rig (JuR) in stable and balanced control. Designing the elevating
Xuan-Kien Dang, Tien-Dat Tran
doaj +1 more source
Constrained Control Design for Dynamic Positioning of Marine Vehicles with Control Allocation [PDF]
Modeling, Identification and Control, 2009 In this paper, we address the control design problem of positioning of over-actuated marine vehicles with control allocation. The proposed design is based on a combined position and velocity loops in a multi-variable anti-windup implementation together ...
Tristan Perez, Alejandro Donaire
doaj +1 more source
Electron dynamics at a positive ion [PDF]
Physical Review E, 2008 Submitted to Phys.
Dufty, James W. +3 more
openaire +4 more sources
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
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
doaj +1 more source
Dynamic Position Encoding for Transformers
CoRR, 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
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