Results 51 to 60 of about 3,121 (160)

Autonomous Antidisturbance Flight Control of Tilt-Rotor UAV in Complex Environment of Ultralow Altitude

International Journal of Aerospace Engineering
In our work, an algorithm is presented for tilt-rotor UAV clusters in an unknown complex environment, which addresses the challenge of navigating and positioning in complex unknown environments without external navigation and positioning information.
Liben Yang, Yu Li, Jianwen Tian, Dong Wang   +3 more
doaj   +1 more source

Pigeon-Inspired Transition Trajectory Optimization for Tilt-Rotor UAVs

Drones
The continuous configuration changes and velocity variations of tilt-rotor UAVs during the transition phase pose significant challenges to flight safety. Hence, the transition phase trajectory must be specially designed.
Jinlai Deng, Yunjie Yang, Jihong Zhu, Wenan Liao, Xiaming Yuan, Xiangyang Wang   +5 more
doaj   +1 more source

Thrust Vectoring Control of a Novel Tilt-Rotor UAV Based on Backstepping Sliding Model Method. [PDF]

Sensors (Basel), 2023
Yu Z, Zhang J, Wang X.
europepmc   +1 more source

A Dynamic RCS and Noise Prediction and Reduction Method of Coaxial Tilt-Rotor Aircraft Based on Phase Modulation. [PDF]

Sensors (Basel), 2022
Wang Z, Huang J, Yi M, Lu S.
europepmc   +1 more source

Design, Analysis, and Testing of a Hybrid VTOL Tilt-Rotor UAV for Increased Endurance. [PDF]

Sensors (Basel), 2021
Panigrahi S, Krishna YSS, Thondiyath A.
europepmc   +1 more source

Active Disturbance Rejection Flight Control and Simulation of Unmanned Quad Tilt Rotor eVTOL Based on Adaptive Neural Network

Drones
The unmanned quad tilt-rotor eVTOL (QTRV) is a variable-configuration aircraft that combines the features of vertical takeoff and landing (VTOL), hovering, and high-speed cruising, making its control system design particularly challenging.
Bohai Deng, Jinfa Xu, Xingyu Yuan, Shengxin Yu   +3 more
doaj   +1 more source

Modal Tilt/Translate Control and Stability of a Rigid Rotor with Gyroscopics on Active Magnetic Bearings

International Journal of Rotating Machinery, 2012
Most industrial rotors supported in active magnetic bearings (AMBs) are operated well below the first bending critical speed. Also, they are usually controlled using proportional, integral and derivative controllers, which are set up as modally uncoupled
Timothy Dimond, Paul Allaire, Simon Mushi, Zongli Lin, Se Young Yoon   +4 more
doaj   +1 more source

Dynamic Simulation of Tilted Rotor Quadcopter

International Journal of Innovative Technology and Exploring Engineering, 2019
Application of quadcopter unmanned aerial vehicle (UAV) has already become common today. As the name suggests, quadcopter has four rotors and these rotors can be classified into two types: fixed and tilted rotors. The maneuvering of quadcopter using the fixed rotor is achieved through the thrust differential.
Muhammad Nur Akmal Noor ‘Adzam, Wahyu Kuntjoro, Mohd Razip Abdullah*, Rizal Effendy Mohd Nasir   +3 more
openaire   +1 more source

Establishment and Verification of the UAV Coupled Rotor Airflow Backward Tilt Angle Controller

Drones
At present, all the flight controllers of agricultural UAVs cannot accurately and quickly control the influencing factors of the UAV coupled rotor airflow backward tilt angle during the application process.
Han Wu, Dong Liu, Yinwei Zhao, Zongru Liu, Yunting Liang, Zhijie Liu, Taoran Huang, Ke Liang, Shaoqiang Xie, Jiyu Li   +9 more
doaj   +1 more source

Structural Design and Real-World Flight Verification of a Downwash-Reducing UAV Equipped With Adaptive Rotors

IEEE Access
This study addresses the challenge of excessive downwash generated by uncrewed aerial vehicles (UAVs) during pinpoint weeding in agriculture. We propose a novel UAV design incorporating adaptive rotors that can tilt during flight to reduce the downward ...
Kenki Miyahara, Rin Watanabe, Shin Kawai, Hajime Nobuhara   +3 more
doaj   +1 more source