Results 1 to 10 of about 11,518 (176)

Optimization of Operational Parameters of Plant Protection UAV [PDF]

Sensors
The operational parameters of plant protection unmanned aerial vehicles (UAVs) significantly impact spraying effectiveness, but the underlying mechanism remains unclear. This paper conducted a full factorial experiment with varying flight speeds, heights,
Wei Xing, Yukang Cui, Xinghao Wang, Jun Shen   +3 more
doaj   +4 more sources

Design of Plant Protection UAV Variable Spray System Based on Neural Networks [PDF]

Sensors, 2019
Recently, unmanned aerial vehicles (UAVs) have rapidly emerged as a new technology in the fields of plant protection and pest control in China. Based on existing variable spray research, a plant protection UAV variable spray system integrating neural ...
Sheng Wen, Quanyong Zhang, Xuanchun Yin, Yubin Lan, Jiantao Zhang, Yufeng Ge   +5 more
doaj   +5 more sources

Numerical simulation and verification of rotor downwash flow field of plant protection UAV at different rotor speeds [PDF]

Frontiers in Plant Science, 2023
In aerial spraying of plant protection UAVs, the continuous reduction of pesticides is an objective process. Under the condition of constant flight state (speed and altitude), the change of pesticide loading will inevitably lead to the shift of lift ...
Kun Chang, Kun Chang, Shengde Chen, Shengde Chen, Shengde Chen, Meimei Wang, Xinyu Xue, Yubin Lan, Yubin Lan, Yubin Lan, Yubin Lan   +10 more
doaj   +2 more sources

Droplet Deposition Distribution Prediction Method for a Six-Rotor Plant Protection UAV Based on Inverse Distance Weighting [PDF]

Sensors, 2022
The aim of this work is to establish a method for real-time calculating droplet deposition distribution of a six-rotor plant protection unmanned aerial vehicle (UAV). The numerical simulation of the airflow field was carried out using computational fluid
Bin Wang, Yan Zhang, Chunshan Wang, Guifa Teng   +3 more
doaj   +2 more sources

Key technology analysis and research progress of UAV intelligent plant protection [PDF]

智慧农业, 2019
UAV plant protection operation faces very complicated environmental conditions. On one hand, its ultra low altitude operations are vulnerable to ground structures and basic hydropower facilities; on the other hand, the effectiveness of plant protection ...
Xu Min, Zhang Ruirui, Chen Liping, Tang Qing, Xu Gang
doaj   +2 more sources

Stereoscopic plant-protection system integrating UAVs and autonomous ground sprayers for orchards

Frontiers in Plant Science, 2022
For orchard plant protection, conventional large machines and small sprayers are practically restricted by either narrow planting intervals with dense leaves or their inadequate penetration power, which leads to an unsatisfactory effect of spray.
Shijie Jiang, Bingtai Chen, Wenwei Li, Shenghui Yang, Yongjun Zheng, Yongjun Zheng, Xingxing Liu   +6 more
doaj   +3 more sources

Prescribed time backstepping sliding mode control for attitude stabilization of plant-protection UAVs under wind and motor disturbances [PDF]

Frontiers in Plant Science
In this paper, a novel prescribed time convergent backstepping sliding mode control method for robust attitude stabilization of plant-protection UAV is proposed to solve the uneven pesticide spraying issue caused by strong gusts and motor dynamics ...
Chenqi Zhu, Zhikai Wang, Dongkai Zhang, Pengju Si   +3 more
doaj   +2 more sources

Obstacle Avoidance and Profile Ground Flight Test and Analysis for Plant Protection UAV

Drones, 2022
In recent years, with the further development of agricultural aviation technology, the plant protection UAV has been widely used, especially in some agricultural environments with limited operating conditions due to its advantages of high efficiency ...
Shubo Wang, Shaoqing Xu, Congwei Yu, Hecheng Wu, Qiang Liu, Dian Liu, Liujian Jin, Yi Zheng, Jianli Song, Xiongkui He   +9 more
doaj   +2 more sources

Development Status and Key Technologies of Plant Protection UAVs in China: A Review

Drones, 2022
Plant protection unmanned aerial vehicles (UAVs) play a crucial role in agricultural aviation services. In recent years, plant protection UAVs, which improve the accuracy and eco-friendliness of agricultural techniques, have been used to overcome the ...
Peng Hu, Ruirui Zhang, Jiaxuan Yang, Liping Chen   +3 more
doaj   +2 more sources

Effect of operational parameters on droplet deposition characteristics using an unmanned aerial vehicle for banana canopy [PDF]

Frontiers in Plant Science
In recent years, as an important part of precision agricultural aviation, the plant protection unmanned aerial vehicle (UAV) has been widely studied and applied worldwide, especially in East Asia.
Jiaxiang Yu, Jiaxiang Yu, Xing Xu, Jieli Duan, Jieli Duan, Yinlong Jiang, Yinlong Jiang, Haotian Yuan, Haotian Yuan, Huazimo Liang, Shuaijie Jing, Shuaijie Jing, Zhou Yang, Zhou Yang, Zhou Yang   +14 more
doaj   +2 more sources