Uav
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Topographic modelling using UAVs compared with traditional survey methods in mining
Abstract The current developments with unmanned aerial vehicles (‘UAVs’) are revolutionizing many fields in civil applications, such as agriculture, environmental and visual inspections. The mining industry can also benefit from UAVs in many aspects, and the reconciliation through topographic control is an example. In comparison with traditional topograp
REM, Int. Eng. J.. Publicado em: 2018-07
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14. Multidisciplinary Design Optimization of UAV Under Uncertainty
ABSTRACT: Uncertainty-based multidisciplinary design optimization considers probabilistic variables and parameters and provides an approach to account for sources of uncertainty in design optimization. The aim of this study was to apply a decoupling uncertainty-based multidisciplinary design optimization method without any dependence on probability mathemati
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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15. Robust Optimal Adaptive Trajectory Tracking Control of Quadrotor Helicopter
Abstract This paper focuses on robust optimal adaptive control strategy to deal with tracking problem of a quadrotor unmanned aerial vehicle (UAV) in presence of parametric uncertainties, actuator amplitude constraints, and unknown time-varying external disturbances. First, Lyapunov-based indirect adaptive controller optimized by particle swarm optimization
Lat. Am. j. solids struct.. Publicado em: 2017-06
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16. Formation Flight Control of Multi-UAV System with Communication Constraints
ABSTRACT Three dimensional formation control problem of multi-UAV system with communication constraints of non-uniform time delays and jointly-connected topologies is investigated. No explicit leader exists in the formation team, and, therefore, a consensus-based distributed formation control protocol which requires only the local neighbor-toneighbor informa
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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17. A Novel Integrated Guidance and Control System Design in Formation Flight
ABSTRACT: Bird's formation flight is one of the best types of cooperation in nature. The bird's flight was the motivation of humans for flying. After one century of flight development, bird's formation flight was the motivation of humans for aircraft's formation flight. The closeness of aircrafts in formation flight and the effect of disturbances such as vor
J. Aerosp. Technol. Manag.. Publicado em: 2015-12
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18. A Numerical Study on Smart Material Selection for Flapped and Twisted Morphing Wing Configurations
ABSTRACT: The developments of innovative adaptive structures on Unmanned Aerial Vehicles (UAVs), such as morphing wings, can potentially reduce system complexities by eliminating control surfaces and their auxiliary equipment. This technology has the potential of allowing a UAV to adapt to different mission requirements or to execute a particular mission mor
J. Aerosp. Technol. Manag.. Publicado em: 2014-09
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19. In-flight collision avoidance controller based only on OS4 embedded sensors
The major goal of this research was the development and implementation of a control system able to avoid collisions during the flight for a mini-quadrotor helicopter, based only on its embedded sensors without changing the environment. However, it is important to highlight that the design aspects must be seriously considered in order to overcome hardware lim
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
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20. Metodologia para utilização de aeromodelos em monitoramento aéreo.
O projeto ARARA (Aeronaves de Reconhecimento assistidas por Rádio e Autônomas), está centrado no desenvolvimento e uso de UAV's, de escala reduzida, para monitoramento aéreo. Seu principal objetivo é a substituição de aeronaves convencionais utilizadas na obtenção de fotografias aéreas, para monitoramento de áreas agrícolas e áreas sujeitas a pr
São Carlos: Embrapa Instrumentação Agropecuária. Publicado em: 2011
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21. Projeto de um veículo aéreo não tripulado para pulverização aeroagrícola / Unmanned aerial vehicle design for agricultural aerial spraying
The Unmanned Aerial Vehicles (UAV s) have a variety of applications, wether monitoring of forest fires, power lines, traffic, crowds, but also can be used for aerial target military applications. Even though it is still somewhat restrict to civil application because of lack of regulation, such vehicles are being developed and studied in the academic sphere.
Publicado em: 2011
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22. Image matching and classification for UAV navigation.
Unmanned aerial vehicles, known as UAVs, have evolved over the past two decades to sophisticated aircraft robots able to carry out surveillance, recognition, remote sensing and even attack missions. But there are not many alternatives of autonomous navigation systems for most of these aircraft which still require human intervention to navigate. Devices such
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/11/2010
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23. Image matching and classification for UAV navigation.
Unmanned aerial vehicles, known as UAVs, have evolved over the past two decades to sophisticated aircraft robots able to carry out surveillance, recognition, remote sensing and even attack missions. But there are not many alternatives of autonomous navigation systems for most of these aircraft which still require human intervention to navigate. Devices such
Publicado em: 2010
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24. VANTS para sensoriamento remoto: aplicabilidade na avaliação e monitoramento de impactos ambientais causados por acidentes com cargas perigosas. / UAV for remoto sensing: applicability in assessment and monitoring of environmental impacts caused by accidents involving hazardous cargo.
A maior parte de desastres químicos no estado de São Paulo é gerada por acidentes com transporte rodoviário de cargas perigosas (cerca de 40%). A coleta de informações ambientais das áreas atingidas depende de vistoria emergencial que muitas vezes traz riscos e dificuldades às equipes de atendimento envolvidas. O objetivo principal da pesquisa foi ve
Publicado em: 2010