Results 31 to 40 of about 7,913,475 (210)

Fractional-Order Linear Active Disturbance Rejection Control Design and Optimization Based Improved Sparrow Search Algorithm for Quadrotor UAV with System Uncertainties and External Disturbance

open access: yesDrones, 2022
This paper presents a generic robust controller that allows applications in various quadrotor unmanned aerial vehicle (UAV) systems effectively even when facing severe system uncertainties and unknown external disturbances.
Jia Song   +4 more
doaj   +1 more source

Robust Optimal Control of Quadrotor UAVs

open access: yesIEEE Access, 2013
This paper provides the design and implementation of an L1-optimal control of a quadrotor unmanned aerial vehicle (UAV). The quadrotor UAV is an underactuated rigid body with four propellers that generate forces along the rotor axes. These four forces are used to achieve asymptotic tracking of four outputs, namely the position of the center of mass of ...
Aykut C. Satici   +2 more
openaire   +2 more sources

Study on Active Fault Tolerant Flight Control Systems for Quadrotor UAV with Actuator Failures [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The rotor blades' fatigue fracture of Quadrotor UAV easily causes the instability or even crash of the UAV due to high-load and long-endurance flight missions. Under this circumstances, an active fault-tolerant flight controller of Quadrotor UAV based on

doaj   +1 more source

A Mathematical Model for Controlling a Quadrotor UAV [PDF]

open access: yesTransactions on Aerospace Research, 2021
Abstract Given the recent surge in interest in UAVs and their potential applications, a great deal of work has lately been done in the field of UAV control. However, UAVs belong to a class of nonlinear systems that are inherently difficult to control.
Rafał Kowalik   +2 more
openaire   +1 more source

Back-stepping sliding mode control method for quadrotor UAV with actuator failure

open access: yesThe Journal of Engineering, 2019
In this article, a fault tolerant controller (FTC) based on back-stepping sliding mode is proposed for a quadrotor unmanned aerial vehicle (UAV) with single-rotor failure.
Zhiqiang Zhu, Songyin Cao
doaj   +1 more source

Adaptive finite-time control for quadrotor UAV with time-varying load based on disturbance observer

open access: yesJournal of Hebei University of Science and Technology, 2021
For the quadrotor unmanned aerial vehicle (UAV) system with time-varying load,the compound finite-time control strategy was proposed in the presence of unknown external disturbances and unknown drag coefficients.Firstly,a complete mathematical model of ...
Xiaojing1 WU   +4 more
doaj   +1 more source

Control system development for autonomous soaring [PDF]

open access: yes, 2010
Thermal and dynamic soaring are two techniques commonly used by birds to extract energy from the atmosphere. This enables them to reduce, energy used during flight and increases their endurance.
Akhtar, Naseem
core   +4 more sources

Quadrotor Cascade Control System Design Based on Linear Active Disturbance Rejection Control

open access: yesApplied Sciences, 2023
In this paper, we propose a cascade control system design based on linear active disturbance rejection control (SMC&A-LADRC) to address the following quadrotor UAV problems: that the path is easily yawed when disturbed, the control parameters are ...
Zheng Qiao, Guixin Zhu, Tong Zhao
doaj   +1 more source

Networked Security Observer-Based Reference Tracking Control of Stochastic Quadrotor UAV System Under Cyber-Attack:T-S Fuzzy Approach

open access: yesIEEE Access, 2022
In this study, a robust $H_{\infty }$ networked security observer-based reference tracking control scheme is proposed for the stochastic quadrotor unmanned aerial vehicle (UAV) system under malicious attacks on the actuator and sensor of network ...
Min-Yen Lee, Han Chiu, Bor-Sen Chen
doaj   +1 more source

Swarm control of an unmanned quadrotor model with LQR weighting matrix optimization using genetic algorithm

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2020
Unmanned aerial vehicle (UAV) quadrotors have developed rapidly and continue to advance together with the development of new supporting technologies. However, the use of one quadrotor has many obstacles and compromises the ability of a UAV to complete ...
Endra Joelianto   +2 more
doaj   +1 more source

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