Results 1 to 10 of about 7,741 (128)

Fault Detection and Identification Method for Quadcopter Based on Airframe Vibration Signals

Sensors, 2021
Quadcopters are widely used in a variety of military and civilian mission scenarios. Real-time online detection of the abnormal state of the quadcopter is vital to the safety of aircraft.
Zhiyao Zhao, Xiaoyi Wang, Xiaomin Zhang
exaly   +3 more sources

Attitude and Altitude Nonlinear Control Regulation of a Quadcopter Using Quaternion Representation

IEEE Access, 2022
Controlling a quadcopter is a challenging task because of the inherent high nonlinearity of a quadcopter system. In this paper, a new quaternion based nonlinear feedback controller for attitude and altitude regulation of a quadcopter is proposed.
Aziza Hussein, Ashraf A M Khalaf, Manal Shaban   +2 more
exaly   +3 more sources

Nonlinear and Linear PID Controllers-Based Hybrid Flight Control Strategy for a Quadcopter With Slung Load

IEEE Access
This paper proposes a new hybrid flight control strategy for a quadcopter with a slung load to achieve a user-defined trajectory following. The high-fidelity coupled nonlinear model involving the quadcopter and slung load is obtained by integrating the ...
Abhishek Manalathody, Kishoor Santhana Krishnan, Jisnu Adindtra Subramanian, Sakthivel Thangavel, Jinraj V. Pushpangathan, Hariprasanth Paranjothy   +5 more
doaj   +2 more sources

Quadcopter Unmanned Aerial Vehicle Structural Design Using an Integrated Approach of Topology Optimization and Additive Manufacturing

Designs
The performance of quadcopter frames, particularly in terms of weight and crash resistance, is significantly influenced by their structural design and manufacturing process.
Luttfi A. Al-Haddad, Alaa Abdulhady Jaber, Wojciech Giernacki, Zeashan Hameed Khan, Khalid Mohsin Ali, Mauwafak Ali Tawafik, Amjad J. Humaidi   +6 more
doaj   +2 more sources

Automated cattle counting using Mask R-CNN in quadcopter vision system

Computers and Electronics in Agriculture, 2020
The accurate and reliable counting of animals in quadcopter acquired imagery is one of the most promising but challenging tasks in intelligent livestock management in the future.
Beibei Xu, Derek Schneider, Greg Falzon
exaly   +2 more sources

The Design and Implementation of a Custom Platform for the Experimental Tuning of a Quadcopter Controller †

Sensors, 2020
This paper describes the development process of the quadcopter-based unmanned flying platform, designed for testing and experimentation purposes. The project features custom-made hardware, which includes the prototype quadcopter frame and the flight ...
Konrad Wojtowicz, Zdzisław Rochala, Eulalia Balestrieri   +2 more
exaly   +3 more sources

An optimal hybrid quadcopter control technique with MPC-based backstepping [PDF]

Archives of Control Sciences
Quadcopter unmanned aerial vehicle is a multivariable, coupled, unstable, and underactuated system with inherent nonlinearity. It is gaining popularity in various applications and has been the subject of numerous research studies.
Solomon C. Nwafor, Joy N. Eneh, Mmasom I. Ndefo, Oluchi C. Ugbe, Henry I. Ugwu, Ozoemena Ani   +5 more
doaj   +2 more sources

Design and Experimental Evaluation of an Odor Sensing Method for a Pocket-Sized Quadcopter

Sensors, 2018
In this study, we design and verify an intake system using the wake of a pocket-sized quadcopter for the chemical plume tracing (CPT) problem. Solving CPT represents an important technique in the field of engineering because it can be used to perform ...
Daisuke Kurabayashi, Shunsuke Shigaki, Muhamad Rausyan Fikri   +2 more
exaly   +3 more sources

Rancang Bangun Low-Budget Autonomous Quadcopter

Metal: Jurnal Sistem Mekanik dan Termal, 2021
Quadcopter is an unstable flying vehicle. The flight controller regulates the rotational speed of the four motors, so that each propeller produces the lift required for the quadcopter to fly stable.
Budi Hartono
doaj   +1 more source

Model Predictive Controller for Quadcopter Trajectory Tracking Based on Feedback Linearization

IEEE Access, 2021
In this study, a feedback linearization model predictive control algorithm is designed for quadcopter trajectory tracking. By applying feedback linearization to the quadcopter nonlinear model, the quadcopter nonlinear model is transformed into a linear ...
Zhenhuan Cai, Suohuai Zhang, Xuedong Jing   +2 more
doaj   +1 more source