scholarly journals Taxiing Characteristic Analysis and Control for Full-Wing Solar-Powered Unmanned Aerial Vehicle

2019 ◽  
Vol 37 (1) ◽  
pp. 7-12
Author(s):  
Zhenyu Ma ◽  
Xiaoping Zhu ◽  
Zhou Zhou
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Good Control ◽  
Front Wheel ◽  
Control Effect ◽  
Characteristic Analysis ◽  
Control Approach ◽  
Disturbance Rejection Control ◽  
Aerial Vehicle ◽  
Solar Powered ◽  
Propeller Thrust

To solve the taxiing control problem of the full-wing solar-powered unmanned aerial vehicle (UAV) without front wheel steering servo and rudder, a control approach using differential propeller thrust to control the taxiing is proposed in this paper. Firstly, the taxiing mathematical models of two kinds of full-wing solar-powered UAVs with the front wheels turning freely or fixed are established. Meanwhile, the taxiing characteristics of full-wing solar-powered UAV in different taxiing speeds are analyzed. Secondly, based on the linear active disturbance rejection control (LADRC) theory, a yaw angle controller is designed by using differential propeller thrust as the control output. Finally, a straight line trajectory tracking scheme which is suitable for take-off and landing taxiing is designed on the base of improved vector field theory. Simulation results show that the designed controller has a good control effect on full-wing solar-powered UAV's take-off and landing taxiing periods, and better robustness.

Parameter analysis of power system for solar-powered unmanned aerial vehicle

2021 ◽  
Vol 295 ◽  
pp. 117031
Author(s):  
Chaoyu Zhang ◽  
Chengming Zhang ◽  
Liyi Li ◽  
Qingbo Guo
Keyword(s):  
Power System ◽  
Unmanned Aerial Vehicle ◽  
Parameter Analysis ◽  
Aerial Vehicle ◽  
Solar Powered

scholarly journals Design of a Hand-Launched Solar-Powered Unmanned Aerial Vehicle (UAV) System for Plateau

2020 ◽  
Vol 10 (4) ◽  
pp. 1300 ◽  
Author(s):  
Xin Zhao ◽  
Zhou Zhou ◽  
Xiaoping Zhu ◽  
An Guo
Keyword(s):  
Low Temperature ◽  
Conceptual Design ◽  
Unmanned Aerial Vehicle ◽  
Design Method ◽  
Structure Design ◽  
Control Law ◽  
Trajectory Tracking Control ◽  
Plateau Area ◽  
Aerial Vehicle ◽  
Solar Powered

This paper describes our work on a small, hand-launched, solar-powered unmanned aerial vehicle (UAV) suitable for low temperatures and high altitudes, which has the perpetual flight potential for conservation missions for rare animals in the plateau area in winter. Firstly, the conceptual design method of a small, solar-powered UAV based on energy balance is proposed, which is suitable for flight in high-altitude and low-temperature area. The solar irradiance model, which can reflect the geographical location and time, was used. Based on the low-temperature discharge test of the battery, a battery weight model considering the influence of low temperature on the battery performance was proposed. Secondly, this paper introduces the detailed design of solar UAV for plateau area, including layout design, structure design, load, and avionics. To increase the proportion of solar cells covered, the ailerons were removed and a rudder was used to control both roll and yaw. Then, the dynamics model of an aileron-free layout UAV was developed, and the differences in maneuverability and stability of aileron-free UAV in plateau and plain areas were analyzed. The control law and trajectory tracking control law were designed for the aileron-free UAV. Finally, the flight test was conducted in Qiangtang, Tibet, at an altitude of 4500 m, China’s first solar-powered UAV to take off and land above 4500 m on the plateau in winter (−30 °C). The test data showed the success of the scheme, validated the conceptual design method and the success of the control system for aileron-free UAV, and analyzed the feasibility of perpetual flight carrying different loads according to the flight energy consumption data.

Design and development of solar powered unmanned aerial vehicle (UAV) for surveying, mapping and disaster relief

2021 ◽  
Author(s):  
M. Karthik ◽  
S. Usha ◽  
B. Predeep ◽  
G. R. Sai Saran ◽  
G. Sridhar ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Disaster Relief ◽  
Design And Development ◽  
Aerial Vehicle ◽  
Solar Powered

On-ground lateral direction control for an unswept flying-wing UAV

2019 ◽  
Vol 123 (1261) ◽  
pp. 416-432 ◽  
Author(s):  
Z. Y. Ma ◽  
X. P. Zhu ◽  
Z. Zhou
Keyword(s):  
Path Following ◽  
Steering System ◽  
Trajectory Tracking Control ◽  
Lateral Direction ◽  
Control Laws ◽  
Control Approach ◽  
Control Precision ◽  
Disturbance Rejection Control ◽  
Direction Control ◽  
Propeller Thrust

ABSTRACTTo solve the on-ground lateral direction control problem of the unswept flying-wing unmanned aerial vehicle (UAV) without rudder, steering system or breaking system, a control approach which uses differential propeller thrust to control the lateral direction is proposed. First, a mathematical model of the unswept flying-wing UAV on-ground moving is established. Second, based on the active disturbance rejection control (ADRC) theory, a yaw angle controller is designed by using the differential propeller thrust as the control output. Finally, a straight line trajectory tracking control law is designed by improving the vector field path following method. Experiment results show that the proposed control laws have a shorter response time, better robustness and better control precision compared with proportional integral derivative (PID) controller. The proposed controller has small computational complexity, simple parameter setting process, and uses practical measurable physical quantities, providing a reference solution for further engineering applications.

Optimal Flight Planning for a Z-Shaped Morphing-Wing Solar-Powered Unmanned Aerial Vehicle

2018 ◽  
Vol 41 (2) ◽  
pp. 497-505 ◽  
Author(s):  
Mingjian Wu ◽  
Tianhang Xiao ◽  
Haisong Ang ◽  
Hongda Li
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Morphing Wing ◽  
Flight Planning ◽  
Aerial Vehicle ◽  
Solar Powered
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