Results 51 to 60 of about 14,458 (214)

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

PairTilt: Design and Control of an Active Tilt‐Rotor Quadcopter for Improved Efficiency and Agility

Advanced Intelligent Systems
This article presents PairTilt, a novel quadcopter design with two pairs of tiltable rotors, offering a balance between the simplicity of conventional quadcopters and the agility of complex tilt‐rotor systems.
Jerry Tang, Mark W. Mueller
semanticscholar   +1 more source

Metaheuristic Optimization-Based Path Planning and Tracking of Quadcopter for Payload Hold-Release Mission

Electronics, 2022
Under harsh geographical conditions where manned flight is not possible, the ability of the unmanned aerial vehicle (UAV) to successfully carry out the payload hold–release mission by avoiding obstacles depends on the optimal path planning and tracking ...
Egemen Belge, Aytaç Altan, R. Hacıoğlu   +2 more
semanticscholar   +1 more source

UAV‐Based Precision Seed Dropping for Automated Reforestation

Journal of Field Robotics, EarlyView.
ABSTRACT Wildfires and deforestation pose significant threats to forest ecosystems, motivating scalable methods for reforestation beyond labor‐intensive cultivation of native forest seedlings in nurseries. To enable large‐scale direct seeding of native species, this paper presents the design, analysis, and field evaluation of a UAV‐based seed‐dropping ...
Qi Rui Lee, Henrik Hesse, Khuanphirom Naruangsri, Worayut Takaew, Stephen Elliott, Dinesh Bhatia   +5 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

Accounting for animal movement during aerial imaging surveys

Remote Sensing in Ecology and Conservation, EarlyView.
Animals are not stationary during aerial surveys; if their movements are related to the movement of the aerial platform, then bias can be introduced into subsequent population count estimates. We sought to establish a framework for assessing the impacts of animal movement on count error and platform bias by comparing aggregated counts and relative ...
Rowan L. Converse, Christopher D. Lippitt, Steven E. Sesnie, David R. Stewart, Matthew J. Butler, Grant M. Harris   +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

Detecting Plateau Zokor (Eospalax baileyi) Mounds in UAV Imagery of Alpine Meadows Using Deep Learning Algorithms

Remote Sensing in Ecology and Conservation, EarlyView.
We developed PZM‐YOLO to automatically detect plateau zokor mounds in UAV imagery of alpine meadows. The model achieved reliable detection of small and densely distributed mounds under complex backgrounds, outperforming the baseline YOLOv5s. This framework supports mound counting, mound position, rodent impact assessment, and grassland restoration ...
Yang Yang, Limin Hua, Lianguo Wang, Jiazhen Li, Rui Dong, Siwei Yang   +5 more
wiley   +1 more source

The Performance of Symbolic Limited Optimal Discrete Controller Synthesis in the Control and Path Planning of the Quadcopter

Applied Sciences
In recent years, quadcopter-type unmanned aerial vehicles have been preferred in many engineering applications. Because of its nonlinear dynamic model that makes it hard to create optimal control, quadcopter control is one of the main focuses of control ...
Serkan Çaşka
doaj   +1 more source

On the Synthesis of a Linear Quadratic Controller for a Quadcopter

International Journal of Applied Sciences and Smart Technologies, 2019
This paper discusses about synthesizing a state-feedback controller for a quadcopter based on an optimal linear quadratic control method. The resulting flight control system enables the quadcopter to maintain stability and to track a reference input. The
Hendra Gunawan Harno
doaj   +1 more source