Results 41 to 50 of about 15,285 (203)

Deep Reinforcement Learning Approaches for Sensor Data Collection by a Swarm of UAVs

Advanced Intelligent Systems, EarlyView.
This article presents four decentralized reinforcement learning algorithms for autonomous data harvesting and investigates how collaboration improves collection efficiency. It also presents strategies to minimize training times by improving model flexibility, enabling algorithms to operate with varying number of agents and sensors.
Thiago de Souza Lamenza, Bruno José Olivieri de Souza, Markus Endler   +2 more
wiley   +1 more source

Quadcopter Precision Landing on Moving Targets via Disturbance Observer-Based Controller and Autonomous Landing Planner

IEEE Access, 2022
Unmanned aerial vehicles, especially quadcopters, play key roles in many real-world applications and the related quadcopter autonomous control algorithms have attracted a great deal of attention.
Nguyen Xuan-Mung, Ngoc Phi Nguyen, Tan Nguyen, Dinh Ba Pham, Mai The Vu, Ha Le Nhu Ngoc Thanh, Sung Kyung Hong   +6 more
doaj   +1 more source

Kalman Filter for Noise Reduction in Aerial Vehicles using Echoic Flow [PDF]

, 2020
Echolocation is a natural phenomenon observed in bats that allows them to navigate complex, dim environments with enough precision to capture insects in midair.
Palo, Andrew
core  

“It Is Much Safer to Be Sparse than Connected”: Safe Control of Robotic Swarm Density Dynamics with PDE Optimization with State Constraints

Advanced Intelligent Systems, EarlyView.
This paper proposes a novel control framework to ensure safety of a robotic swarm. A feedback optimization controller is capable of driving the swarm toward a target density while keeping risk‐zone exposure below a safety threshold. Theory and experiments show how safety is more effectively achieved for sparsely connected swarms.
Longchen Niu, Gennaro Notomista
wiley   +1 more source

A Geomorphometric Approach to Estimate the Deterioration of Earthen Archaeological Sites by Rainfall and Diffusion Processes: The Huaca Chornancap (Eighth–14th Century ad), Lambayeque, Peru

Archaeological Prospection, EarlyView.
ABSTRACT Rain‐induced erosion processes can severely damage Earthen archaeological sites. Huaca Chornancap (HCH; eighth–14th century ad) is a platform located in the Lambayeque region (Peru) exposed to seasonal rain due to El Niño Southern Oscillation (ENSO).
Luigi Magnini, Maria Ilaria Pannaccione Apa, Robert Gutiérrez Cachay, Marco Fernández Manayalle, Carlos Eduardo Wester La Torre, Guido Ventura   +5 more
wiley   +1 more source

Feedback Linearization and Eigenstructure Assignment Control for Quadcopter Trajectory Tracking

Algerian Journal of Signals and Systems
A quadcopter is a highly coupled and nonlinear multivariable system which attracted the attention of many researchers. During the last decade, several techniques and strategies have been proposed for modeling and controlling Quadcopters.
Hocine LOUBAR, Razika ZAMOUM BOUSHAKI, Abdellah KOUZOU   +2 more
doaj   +1 more source

Study of mutual influence between control channels of the quadcopter due to the low maneuverability of the UAV

Авіаційно-космічна техніка та технологія, 2022
The subject of study in this article is the processes of controlling an unmanned aerial vehicle (UAV) of the quadcopter type. A quadcopter is a special case of a multicopter built according to the helicopter scheme, which has four main rotors.
Arkadii Zhukevych, Vitalii Dzhulgakov, Oleksandr Zhukevych   +2 more
doaj   +1 more source

Skyport airframe: design and manufacturing [PDF]

, 2015
Many rural areas of developing countries lack the necessary transportation infrastructure to have reliable access to basic needs. This is particularly true for medical supplies.
Clark, Thomas, Dewane, Michael, Faleta, Siosiua, Llanos-Hinson, Robert   +3 more
core   +1 more source

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

Remote Sensing in Ecology and Conservation, EarlyView.
Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann, Valdemar Palmqvist, Johanna Stedt   +2 more
wiley   +1 more source

Attitude and Altitude Tracking Controller for Quadcopter Dynamical Systems

IEEE Access, 2022
Unmanned aerial vehicle quadcopters have applications in different real-life areas. They are nonlinear systems that necessitate the utilization of nonlinear control techniques.
Manal S. Esmail, Mohamed H. Merzban, Ashraf A. M. Khalaf, Hesham F. A. Hamed, Aziza I. Hussein   +4 more
doaj   +1 more source