Results 11 to 20 of about 1,627,092 (301)

Actuator Fault Tolerant Control of Variable Cycle Engine Using Sliding Mode Control Scheme

open access: yesActuators, 2021
This paper presents a fault tolerant control (FTC) design for the actuator faults in a variable cycle engine (VCE). Ensured by the multiple variable geometries structure of VCE, the design is realized by distributing the control effort among the unfaulty
Yuan Yuan   +4 more
doaj   +1 more source

A Nonlinear Robust Sliding Mode Controller with Auxiliary Dynamic System for the Hovering Flight of a Tilt Tri-Rotor UAV

open access: yesApplied Sciences, 2020
The tilt tri-rotor unmanned aerial vehicle (UAV) has three flight modes: the hover mode, the transition mode, and the fixed-wing mode. Controller design in the hover mode is the premise of realizing stable flight of this kind of UAV.
Guang He   +3 more
doaj   +1 more source

Adaptive control allocation [PDF]

open access: yesAutomatica, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tjønnås, Johannes, Johansen, Tor A.
openaire   +1 more source

A Survey of Optimal Control Allocation for Aerial Vehicle Control

open access: yesActuators, 2023
In vehicle control, control allocation is often used to abstract control variables from actuators, simplifying controller design and enhancing performance.
Till Martin Blaha   +2 more
doaj   +1 more source

Efficiency Change of Control Surface of a Biomimetic Wing Morphing UAV

open access: yesIEEE Access, 2020
Variation modes of avian wings offer large-scale morphing aircraft an effective approach for solving problems such as the mass center shift in longitudinal trim and control system design during the morphing process.
Hang Ma   +3 more
doaj   +1 more source

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

Optimizing nonlinear adaptive control allocation [PDF]

open access: yesModeling, Identification and Control: A Norwegian Research Bulletin, 2005
A control-Lyapunov approach is used to develop an adaptive optimizing control allocation algorithm for over-actuated mechanical systems where the actuator model is affine in the uncertain parameters. Uniform global (asymptotic) stability is guaranteed by the control allocation defined by the dynamic update laws in combination with an exponentially ...
Johannes Tjønnås, Tor A. Johansen
openaire   +3 more sources

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

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

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

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