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Energies 2017, 10(6), 803; doi:10.3390/en10060803

Autonomous Wireless Self-Charging for Multi-Rotor Unmanned Aerial Vehicles

1
Faculty of Science, Engineering and Computing, Kingston University London, London SW15 3DW, UK
2
Visiting Associate Professor, Robotics Institute, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 999041, UAE
3
Robotics Institute, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 999041, UAE
*
Author to whom correspondence should be addressed.
Academic Editor: Kam Tim Chau
Received: 25 April 2017 / Revised: 31 May 2017 / Accepted: 6 June 2017 / Published: 13 June 2017
(This article belongs to the Special Issue Wireless Power Transfer)
View Full-Text   |   Download PDF [2474 KB, uploaded 15 June 2017]   |  

Abstract

Rotary-wing unmanned aerial vehicles (UAVs) have the ability to operate in confined spaces and to hover over point of interest, but they have limited flight time and endurance. Conventional contact-based charging system for UAVs has been used, but it requires high landing accuracy for proper docking. Instead of the conventional system, autonomous wireless battery charging system for UAVs in outdoor conditions is proposed in this paper. UAVs can be wirelessly charged using the proposed charging system, regardless of yaw angle between UAVs and wireless charging pad, which can further reduce their control complexity for autonomous landing. The increased overall mission time eventually relaxes the limitations on payload and flight time. In this paper, a cost effective automatic recharging solution for UAVs in outdoor environments is proposed using wireless power transfer (WPT). This research proposes a global positioning system (GPS) and vision-based closed-loop target detection and a tracking system for precise landing of quadcopters in outdoor environments. The system uses the onboard camera to detect the shape, color and position of the defined target in image frame. Based on the offset of the target from the center of the image frame, control commands are generated to track and maintain the center position. Commercially available AR.Drone. was used to demonstrate the proposed concept which is equppied with bottom camera and GPS. Experiments and analyses showed good performance, and about 75% average WPT efficiency was achieved in this research. View Full-Text
Keywords: wireless power transfer; rotary-wing; unmanned aerial vehicle (UAV); quadcopter; image processing; endurance; energy; autonomous landing wireless power transfer; rotary-wing; unmanned aerial vehicle (UAV); quadcopter; image processing; endurance; energy; autonomous landing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Junaid, A.B.; Konoiko, A.; Zweiri, Y.; Sahinkaya, M.N.; Seneviratne, L. Autonomous Wireless Self-Charging for Multi-Rotor Unmanned Aerial Vehicles. Energies 2017, 10, 803.

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