农机化研究2018，Vol.40Issue(12)：47-54,8.
多旋翼植保无人机变量喷洒系统设计
Design of a Variable Spraying System Based on Multi-rotor Unmanned Aerial Vehicle
摘要
Abstract
The variable spraying system based on the multi-rotor plant-protection unmanned aerial vehicle(UAV)was designed by the pulse width modulation(PWM)technology.The system was composed of hardware and software.The hardware system was consisted of UAV landing gear and variable spray controller,while the software system realized the function of the duty ratio regulator to control the flow rate.Moreover, the key mechanical parts of the multi-rotor UAV was linear static analyzed via the Abaqus analysis software.The finite element results show that the deformation in the critical stress components is small.Thus,the design is reasonable.In addition,the experiment about the relationship of duty ratio and the spray flow is carried out.The results reveal that,when the duty ratio is in the range between 6%and 8%,the third degree polynomial can perfectly fit the experimental data, and the R2is 0.998.When the duty ratio is greater than 8%,the spray flow is attained to the maximum and do not change with the increase of duty ratio.关键词
植保无人机/变量喷洒系统/有限元分析/PWMKey words
plant-protection UAV/variable spraying system/finite element analysis/PWM分类
农业科技引用本文复制引用
刘泽锋,唐宇,骆少明,侯超钧,黄伟锋,陈亚勇..多旋翼植保无人机变量喷洒系统设计[J].农机化研究,2018,40(12):47-54,8.基金项目
国家星火计划项目(2015GA780054) （2015GA780054）
广东省科技计划项目(2014A020208139) （2014A020208139）
广东省公益研究与能力建设专项项目(2015A020209179,2016B020202008) （2015A020209179,2016B020202008）
广东省协同创新与平台环境建设专项(2016A040402044) （2016A040402044）
"广东特支计划"科技青年拔尖人才项目(2016TQ03N704) （2016TQ03N704）
广州市科技计划项目(201704020076) （201704020076）
