Results 101 to 110 of about 49,392 (306)

Consensus Control of Time-Varying Delayed Multiagent Systems with High-Order Iterative Learning Control

International Journal of Aerospace Engineering, 2018
We address the consensus control problem of time-varying delayed multiagent systems with directed communication topology. The model of each agent includes time-varying nonlinear dynamic and external disturbance, where the time-varying nonlinear term ...
Xiongfeng Deng, Xiuxia Sun, Ri Liu, Shuguang Liu   +3 more
doaj   +1 more source

Automated Cinematography with Unmanned Aerial Vehicles

CoRR, 2017
The rise of Unmanned Aerial Vehicles and their increasing use in the cinema industry calls for the creation of dedicated tools. Though there is a range of techniques to automatically control drones for a variety of applications, none have considered the problem of producing cinematographic camera motion in real-time for shooting purposes. In this paper
Quentin Galvane, Julien Fleureau, François-Louis Tariolle, Philippe Guillotel   +3 more
openaire   +2 more sources

Investigating the use of the Coanda Effect to create novel unmanned aerial vehicles

, 2009
In recent years the demand for Unmanned Aerial Vehicles (UAV's) has increased rapidly across many different industries and they are used for various applications.
Barlow, Chris, Prior, Stephen D., Odedra, Sid, Lewis, Darren, Erbil, Mehmet Ali, Karamanoglu, Mehmet, Collins, R.   +6 more
core  

Influence of Thermal Cycling on Friction, Wear, and Damage Evolution of Fused Deposition Modeling of 3D‐Printed Glass Fiber Reinforced Polylactic Acid Composites

Polymer Composites, EarlyView.
Schematic illustration of the experimental procedure of the specimens. ABSTRACT This research work investigated the effect of the cyclic thermo‐hygrometric aging regime between −20°C and +40°C with 0–400 cycles on the reciprocating tribological properties of fused deposition modeling (FDM) printed polylactic acid (PLA) and the same material reinforced ...
Sinan Fidan, Satılmış Ürgün, Nevin Gamze Karsli, Taner Yılmaz, Mustafa Özgür Bora, Mehmet İskender Özsoy   +5 more
wiley   +1 more source

UAV collision avoidance: a specific acceleration matching approach

, 2011
Includes abstract.Includes bibliographical references.An increased level of autonomy is required for future Unmanned Aerial Vehicle (UAV) missions. One of the technologies required for this to occur is an adequate sense and avoid system to enable the UAV
Patel, Amir
core  

The Need for Fundamental Photovoltaics Research to Ensure Energy Security

Progress in Photovoltaics: Research and Applications, EarlyView.
The center of this graphic focuses on the core of this paper—that fundamental research is central to the continued development of the photovoltaic (PV) industry. To the left, we have depictions of what is being studied—PV materials, PV cell structures, and PV module structures.
Rebecca Saive, Gavin Conibeer, Lisanne M. Einhaus, Jean‐François Guillemoles, Koami Soulemane Hayibo, Karin Hinzer, Jacob J. Krich, Martha Lenio, Michael P. Nielsen, Frederick U. Nitta, Ian R. Sellers, Daniel Suchet, Eric Tervo, Tom Tiedje, Jelle Westerhof   +14 more
wiley   +1 more source

Vision based strategies for implementing Sense and Avoid capabilities onboard Unmanned Aerial Systems

, 2011
Current research activities are worked out to develop fully autonomous unmanned platform systems, provided with Sense and Avoid technologies in order to achieve the access to the National Airspace System (NAS), flying with manned airplanes.
Forlenza, Lidia
core  

Trinocular Ground System to Control UAVs

, 2009
In this paper we introduce a real-time trinocular system to control rotary wing Unmanned Aerial Vehicles based on the 3D information extracted by cameras located on the ground.
Campoy Cervera, Pascual, Martínez Luna, Carol Viviana, Olivares Méndez, Miguel Ángel, Mondragon, Ivan, Mondragon Bernal, Ivan Fernando, Pascual Campoy, Campoy, Pascual, Carol Martinez, Miguel A. Olivares-Mendez, Ivan Mondragon, MARTINEZ LUNA, Carol   +10 more
core   +1 more source

“Cold Tropics”: Permafrost Existence and Thickness on Eastern Nevado Coropuna (Southern Peruvian Andes) Revealed by Ground‐Penetrating Radar and Geoelectrical Soundings

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca, Ramón Pellitero, Adriano Ribolini, José Úbeda, Luis Mariano del Río, Ricardo Vila, Oscar Vilca   +6 more
wiley   +1 more source

Performance Analysis and Flow Mechanism of Close-Range Overlapping Rotor in Hover

Drones
High payload capacity multi-rotor aerial vehicles are typically configured with multiple propellers to achieve the required aerodynamic lift. However, this design approach often results in an increased overall dimensional envelope, which introduces ...
Ziyi Xu, Yi Ding, Zhe Hui, Chu Tang, Zhaobing Jiang, Liang Wang   +5 more
doaj   +1 more source