Results 21 to 30 of about 10,303,138 (298)

A Fault-Tolerant Steering Prototype for X-Rudder Underwater Vehicles

open access: yesSensors, 2020
The X-rudder concept has been applied to more and more autonomous underwater vehicles (AUVs) in recent years, since it shows better maneuverability and robustness against rudder failure compared to the traditional cruciform rudder.
Wenjin Wang   +5 more
doaj   +1 more source

A formulation of control allocation problem by several quadratic programming sub-problems and application for the motion control

open access: yesNihon Kikai Gakkai ronbunshu, 2019
This paper proposes a control allocation method for the motion control in which the number of manipulated variables is one more than control degree of freedom.
Naoki IMAMURA   +2 more
doaj   +1 more source

Stabilization of an Unconventional Large Airship When Hovering

open access: yesApplied Sciences, 2021
In this paper, we present the stabilization of an unconventional unmanned airship above a loading and unloading area. The study concerns a quad-rotor flying wing airship. This airship is devoted to freight transport.
Naoufel Azouz   +3 more
doaj   +1 more source

Coordinated Control Strategy for Drive Mode Switching of Double Rotor In-Wheel Motor Based on MPC and Control Allocation

open access: yesWorld Electric Vehicle Journal, 2023
To overcome the problems existing in the practical application of traditional in-wheel motors used for electric vehicles, an integrated double rotor in-wheel motor was proposed, which can realize three drive modes to meet variable operating condition ...
Junmin Li   +3 more
doaj   +1 more source

Resource allocation, hyperphagia and compensatory growth [PDF]

open access: yes, 2004
Organisms often shown enhanced growth during recovery from starvation, and can even overtake continuously fed conspecifics (overcompensation). In an earlier paper (Ecology 84, 2777-2787), we studied the relative role played by hyperphagia and resource ...
Gurney, William S. C., Nisbet, Roger M.
core   +4 more sources

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

Computationally efficient control allocation [PDF]

open access: yesGuidance, Navigation, and Control Conference and Exhibit, 1999
A computationally efficient method for calculating near-optimal solutions to the three-objective, linear control allocation problem is disclosed. The control allocation problem is that of distributing the effort of redundant control effectors to achieve some desired set of objectives. The problem is deemed linear if control effectiveness is affine with
openaire   +1 more source

Allocation of quality control stations in multistage manufacturing systems [PDF]

open access: yes, 2011
The allocation of quality control stations (AQCS) in multistage manufacturing systems has been studied extensively over the decades. This paper reviews the existing approaches, models comparison and solution techniques applied in AQCS.
Ali G. Shetwan   +5 more
core   +1 more source

Analysis and Management of Motor Failures of Hexacopter in Hover

open access: yesActuators, 2021
This research presents an analysis and management strategy for hovering hexacopter with one or more failing motors. Of late, multirotor drones have become particularly popular, and all drones have been increasing in popularity. Unlike a fixed-wing drone,
Fu-Hsuan Wen   +2 more
doaj   +1 more source

Joint call admission control and resource allocation for H.264 SVC transmission over OFDMA networks [PDF]

open access: yes, 2010
This paper aims to combine adaptive subcarrier allocation and bit loading with the transmission of the H.264 SVC (Scalable Video Coding) encoded video sequences in order to increase the number of supported users in the system and provide the best quality
Bocus, MZ   +5 more
core   +1 more source

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