Results 1 to 10 of about 91,370 (186)

High-Efficiency Thrust Vector Control Allocation

open access: yesJournal of Guidance, Control, and Dynamics, 2014
A generalized approach to the allocation of redundant thrust vector slew commands for multi-actuated launch vehicles is presented, where deflection constraints are expressed as omniaxial or elliptical deflection limits in gimbal axes.
Orr, Jeb S, Slegers, Nathan
core   +3 more sources

Dynamic Positioning Capability Assessment Based on Optimal Thrust Allocation

open access: yesPolish Maritime Research, 2023
The article presents an efficient method of optimal thrust allocation over the actuators in a dynamically positioned ship, according to the DNV-ST-0111 standard, Level 1.
Piekło Agnieszka   +2 more
doaj   +2 more sources

Multi-Objective Optimization for Thrust Allocation of Dynamic Positioning Ship

open access: yesJournal of Marine Science and Engineering
Thrust allocation (TA) plays a critical role in the dynamic positioning system (DPS). The task of TA is to allocate the rotational speed and angle of each thruster to generate the generalized control forces.
Qiang Ding   +4 more
doaj   +2 more sources

Fault-Tolerant Control of Autonomous Underwater Vehicle Actuators Based on Takagi and Sugeno Fuzzy and Pseudo-Inverse Quadratic Programming under Constraints [PDF]

open access: yesSensors
Autonomous Underwater Vehicles (AUVs) play a significant role in ocean-related research fields as tools for human exploration and the development of marine resources. However, the uncertainty of the underwater environment and the complexity of underwater
Zimu Zhang   +3 more
doaj   +2 more sources

An Optimization Method for Thrust Allocation of ROV Based on Genetic Algorithm

open access: yesKongzhi Yu Xinxi Jishu, 2023
To address the problem of output saturation in the thrust allocation of remotely operated vehicles (ROVs), this paper introduces a thrust distribution optimization technique based on genetic algorithm.
XU Lei   +4 more
doaj   +3 more sources

Fuel Optimal Thrust Allocation in Dynamic Positioning [PDF]

open access: yesIFAC Proceedings Volumes, 2013
This paper is focused on the thrust allocation algorithm, which is a part of a Dynamic Positioning (DP) system in marine vessels with diesel-electric power system. In this paper the focus is on using the thrust allocation to make the diesel generators on board the vessel work more fuel efficiently, by reducing the total fuel consumption of all online ...
Rindarøy, Martin, Johansen, Tor Arne
  +6 more sources

Derivative Free Optimal Thrust Allocation in Ship Dynamic Positioning Based on Direct Search Algorithms [PDF]

open access: yesTransNav, 2020
In dynamic positioning systems, nonlinear cost functions, as well as nonlinear equality and inequality constraints within optimal thrust allocation procedures cannot be handled directly by means of the solvers like industry-standardized quadratic ...
Marko Valčic, Jasna Prpic-OrŁic
doaj   +1 more source

Multistep thrust allocation method based on priority idea for remotely operated underwater vehicle with horizontal thrusters configured as X shape

open access: yesInternational Journal of Advanced Robotic Systems, 2022
The horizontal thrusters located as X shape is a commonly used configuration in remotely operated underwater vehicle (ROV). To improve the motion performance of the remotely operated underwater vehicle with this configuration for some typical operation ...
Gongwu Sun   +3 more
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

Planning Allocation for GTO-GEO Transfer Spacecraft with Triple Orthogonal Gimbaled Thruster Boom

open access: yesMathematics, 2023
This paper proposes an electric propulsion platform based on a triple orthogonal gimbaled thruster boom to realize the GTO-GEO transfer process. The adjustment mechanism of the gimbaled thruster boom significantly improves the range of thrust vector ...
Guangfu Ma, Xianglong Kong
doaj   +1 more source

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