Results 31 to 40 of about 2,775 (199)

Integrated Fault–Tolerant Control of a Quadcopter UAV with Incipient Actuator Faults

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2022
An integrated approach to the fault-tolerant control (FTC) of a quadcopter unmanned aerial vehicle (UAV) with incipient actuator faults is presented.
Kantue Paulin, Pedro Jimoh O.
doaj   +1 more source

Investigation on the automatic geo-referencing of archaeological UAV photographs by correlation with pre-existing ortho-photos [PDF]

open access: yes, 2014
We present a method for the automatic geo-referencing of archaeological photographs captured aboard unmanned aerial vehicles (UAVs), termed UPs. We do so by help of pre-existing ortho-photo maps (OPMs) and digital surface models (DSMs).
Briese, Christian   +4 more
core   +2 more sources

Research of the influence of technological defects on the reinforcement of statistical stress fields in composite materials of quadrocopter blades

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки, 2023
Background. Improving designs, expanding the range and increasing the production of quadrocopters are stable global trends. Progressive technical solutions, new materials, modern microelectronics are used in the designs of quadrocopters.
E.D. Kartashova
doaj   +1 more source

X-COPTER STUDIO

open access: yesActa Polytechnica CTU Proceedings, 2015
We present a project that aggregates various existing robotic software and serves as a platform to conveniently control a quadrocopter, mainly for research or educational purposes.
Michal Koutný   +4 more
doaj   +1 more source

The adaptive control system of quadrocopter motion [PDF]

open access: yes, 2018
In this paper we present a system for automatic control of a quadrocopter based on the adaptive control system. The task is to ensure the motion of the quadrocopter along the given route and to control the stabilization of the quadrocopter in the air in ...
Mecella, Massimo   +3 more
core   +4 more sources

Special aspects of backscattering amplitude characteristics measurement of small and ultrasmall RCS objects in Ka-band [PDF]

open access: yesITM Web of Conferences, 2019
A bench for special aspects of backscattering amplitude characteristics measurement of small and ultrasmall RCS objects in Ka-band is presented. The RCS of quadrocopter Syma X12 are defined for ±2GHz band from different radiation directions for both ...
Mozharov Eduard O.   +2 more
doaj   +1 more source

LAND SURVEY FROM UNMANED AERIAL VEICHLE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In this paper we present, how we use a quadrocopter unmanned aerial vehicle with a camera attached to it, to do low altitude photogrammetric land survey. We use the quadrocopter to take highly overlapping photos of the area of interest. A “structure from
V. Peterman, M. Mesarič
doaj   +1 more source

Barrier Functions in Cascaded Controller: Safe Quadrotor Control

open access: yes, 2020
Safe control for inherently unstable systems such as quadrotors is crucial. Imposing multiple dynamic constraints simultaneously on the states for safety regulation can be a challenging problem.
debouk, hovakimyan, schoellig, wang
core   +1 more source

Aggressive Quadrotor Flight through Narrow Gaps with Onboard Sensing and Computing using Active Vision [PDF]

open access: yes, 2017
We address one of the main challenges towards autonomous quadrotor flight in complex environments, which is flight through narrow gaps. While previous works relied on off-board localization systems or on accurate prior knowledge of the gap position and ...
Faessler, Matthias   +3 more
core   +1 more source

LOW COST SURVEYING USING AN UNMANNED AERIAL VEHICLE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Traditional manned airborne surveys are usually expensive and the resolution of the acquired images is often limited. The main advantage of Unmanned Aerial Vehicle (UAV) system acting as a photogrammetric sensor platform over more traditional manned ...
M. Pérez, F. Agüera, F. Carvajal
doaj   +1 more source

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