Article
Environmental Sciences
Degui Yang, Jin Li, Buge Liang, Xing Wang, Zhenghong Peng
Summary: This paper proposes a method for target recognition of multi-rotor drones based on micro-Doppler parameter estimation. By utilizing techniques such as complex variational mode decomposition and singular value decomposition, the micro-motion parameters of rotor blades are successfully estimated, and the scintillation of the target is reconstructed with high accuracy.
Article
Chemistry, Analytical
Alexandru Cozma, Adrian-Cosmin Firculescu, Dan Tudose, Laura Ruse
Summary: In recent years, scientists have shown increasing concern for air quality, particularly in large cities and industrialized areas. Continuous monitoring of air quality is vital in investigating the causes and reducing pollution. This paper presents a new autonomous multi-rotor aerial platform to perform real-time monitoring of air quality in large cities, providing detailed heat-maps of pollution levels at different altitudes.
Article
Acoustics
Oliver Tierdad Filsoof, Morten Hartvig Hansen, Anders Yde, Peter Bottcher, Xuping Zhang
Summary: This paper presents a novel methodology and systematic modeling method for investigating the modal dynamics of multi-rotor wind turbines, using comprehensive numerical simulations and analyses. The study reveals that rotor modes on a multi-rotor wind turbine behave similarly to single-rotor wind turbines, and low torsional stiffness at the rotor attachment point affects natural frequencies and mode splitting. The proposed dynamic modeling method is verified through simulations and analyses, providing essential insights for the design of multi-rotor wind turbines and single-rotor wind turbines with slender towers.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Robotics
Geesara Kulathunga, Hany Hamed, Dmitry Devitt, Alexandr Klimchik
Summary: The paper aims to develop a continuous optimization-based refinement of the reference trajectory for Multi-rotor Aerial Vehicles in unknown environments, employing a global planner and a local planner to ensure safety and tracking accuracy. Experimental results showed that the proposed approach outperformed three other methods in cluttered environments.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Engineering, Aerospace
Carlos Ramos-Romero, Nathan Green, Antonio J. Torija, Cesar Asensio
Summary: This paper presents a measurement and analysis framework for the acoustic characterization of sUAS. Important findings include the robustness of the framework, the dominant noise sources of different sUAS, and the maximum radiation direction of sUAS noise.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Ruohan Xu, Wen Zhang, Nyuk Hien Wong, Shanshan Tong, Xinyi Wu
Summary: This paper develops a novel methodology to obtain accurate ambient temperature data using a multi-rotor UAV, and validates its accuracy through field experiments and data analysis. A case study comparing ambient temperatures at various heights above different ground materials is conducted.
Article
Mathematics
Anton Filatov, Mark Zaslavskiy, Kirill Krinkin
Summary: In the recent decade, the rapid development of drone technologies has made it easier to solve many spatial problems, such as the 3D reconstruction of large objects. This paper presents a method for centralized multi-drone 3D reconstruction that allows autonomous data capturing with drones equipped only with an RGB camera. The method relies on a multiagent approach, where a control center evenly distributes workload and independently supports all drones for simultaneous flights without a high collision risk.
Article
Engineering, Aerospace
Evandro Bernardes, Frederic Boyer, Stephane Viollet
Summary: This article describes a single rotor-based unmanned aerial vehicle (UAV), known as a mono-spinner, that uses torque modulation to achieve roll and pitch control without a complicated swashplate mechanism. The article provides a full non-linear model of the mono-spinner based on the Euler-Poincare theoretical framework, including a description of the drone's structure and rotor control system. Mechanical properties, kinetic energy, and external forces are described to derive the equations of motion. A novel, Lyapunov-stable, quaternion-based nonlinear control law is presented, along with simulation results based on parameters measured from a real mono-spinner implementation.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Naiheng Song, Ali Benmeddour
Summary: Novel slippery polyurethane coatings with high surface hydrophobicity and superior erosion resistance have been developed to protect fast moving aerodynamic structures against ice accretion. The coatings exhibit good compatibility with the polyurethane matrix and provide effective surface hydrophobicity and slipperiness, resulting in low ice adhesion strength and low erosion rates.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Kaipeng Wang, Zhijun Meng, Zichen Wang, Zhenping Wu
Summary: This paper proposes an improved B-spline-based trajectory generation method that can generate safe, smooth, and kinodynamically feasible trajectories in real-time. It introduces the principle of error upper bound of B-spline curve and proposes a new trajectory safety assurance method. The method also includes a parameter adaptive trajectory optimization method that improves the quality and success rate of the planned trajectory. Validation in simulation and real-world tasks shows significant improvement in the quality of the generated trajectory.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Mechanical
Hamidreza Heidari, Martin Saska
Summary: This paper introduces an indirect solution for path planning of hexarotor system by deriving dynamic equations using the generalized Euler-Lagrange formulation and obtaining optimality necessary conditions with PMP. Several simulation studies on a hexacopter show the effectiveness of the proposed approach in finding optimal paths for point-to-point motion.
MECHANISM AND MACHINE THEORY
(2021)
Article
Computer Science, Artificial Intelligence
Carlos Viegas, Babak Chehreh, Jose Andrade, Joao Lourenco
Summary: This paper describes the design, construction, and testing of a novel light-weight tethered UAV with mixed multi-rotor and water jet propulsion for forest fire fighting. The results demonstrate that combining water jet propulsion with multi-rotor propulsion increases flight endurance.
JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
(2022)
Article
Automation & Control Systems
Takumi Wakabayashi, Yukimasa Suzuki, Satoshi Suzuki
Summary: This study proposes a chance-constraints based on obstacle velocity (CCOV) method, which can be combined with previous positional chance constraint methods to account for uncertainty in both position and velocity. This effectively prevents collision with high-velocity obstacles, even in a noisy environment.
ROBOTICS AND AUTONOMOUS SYSTEMS
(2023)
Article
Engineering, Industrial
Rui Yan, Xiaoping Zhu, Xiaoning Zhu, Rui Peng
Summary: A collaborative truck-and-drone system is able to perform various tasks and improve task success by aborting tasks and activating rescue procedures under certain conditions. By designing an optimization model, this paper considers task abortion and route optimization for trucks and drone clusters under random attacks, as well as time windows and protection of drones in the system. The proposed strategy is validated through numerical examples and sensitivity analysis, demonstrating its effectiveness in minimizing total costs and achieving optimal routing.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Automation & Control Systems
Sili Zhou, Wenping Cao, Qunjing Wang, Mengran Zhou, Xiaoliang Zheng, Jiachuan Lou, Yong Chen
Summary: This article proposes a visual rotor attitude estimation method based on KMFDSST algorithm, which estimates the rotor attitude by simultaneously detecting the positions of three visual objects. Experimental results show that this method has better robustness.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Engineering, Aerospace
Andre F. P. Ribeiro, Carlos Ferreira, Damiano Casalino
Summary: This study compares a filament-based free wake panel method to experimental and validated numerical data in order to simulate propeller slipstreams and their interaction with aircraft components. The results show that the free wake panel method is able to successfully capture the slipstream deformation and shearing, making it a useful tool for propeller-wing interaction in preliminary aircraft design.
AEROSPACE SCIENCE AND TECHNOLOGY
(2024)
