无人直升机在茶园防霜中的应用研究

《无人直升机在茶园防霜中的应用研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、万方数据无人直升机在茶园防霜中的应用研究protection，theteacanopytemperatureonaverageincreasedby3．34℃．(3)OptimizationofflightparameterforfrostprotectionFirst，theinfluenceofdifferentflightaltitudeandflightspeedfortheperturbationontheteacanopywastested．Then，throughtheorthogonalregressiondesign，themodelofre

2、lationalthatamongthefrostprotectioneffectandflightheight，flightspeedandflighttimeintervalwasestablished，andtheoptimumcombinationofflightparameterswasoptimized．Theresultsshowthatunderacertainflightspeed，canopywindspeeddecreasingwiththealtitudeincreasing．Whentheflightheightwas4mandfli

3、ghtspeedwas6m‘s一，thewindspeedofdisturbedteacanopyismaximum，itwas1．45m‘s～．Theorderthatflightparametersinfluencethefrostprotectionisflighttimeinterval，flightheight，flightspeed．Basedontheestablishedregressionequation，thebestoptimizedparametercombinationthroughgoldensectionmethodisthatf

4、lightheightis4m，theflightspeedis6m。s。1andtheflighttimeintervalof20min．(4)DevelopmentofmeteorologicalparameterswirelessalarmsystemforfrostprotectionZigBeemeteorologicalparameterwirelessacquisitiondevicewasdevelopedandmonitoring／alarmingprogramwasdesignedwithAndroid．Meteorologicalpara

5、metermonitoringwaswindspeedandthermalinversionlayerfromtoptobottom．Thecriticalwindspeedastheprerequisite，thefrostprotectionregionisdeterminedondifferenceofthermalinversionofcriticallowtemperature．Thewirelesstransmissioncharacteristicsandthereliabilityofthealarmweretestedintheteafiel

6、ds．Theresultsshowthatthesystemisreliable，andcouldrealizefrostprotectionalarmindifferentregions，SOastoassistunmannedhelicopterstoentertheexpectedfieldstobeprotected．Thetestofunmannedhelicopterforfrostprotectionintheteafieldsoptimizedthecombinationoffrostprotectionflightparameterstrad

7、ercertainconditions，andprovidedparameterbasisforachievingawiderangeofmobilefrostprotectionpracticewhichissuitableforlatefrostdamageprotectioninhillyteafields．Keywords：Unmannedhelicopter；Flightparameter；Frostprotection；Teafields；LatefrostdamageIV万方数据江苏大学硕士学位论文目录第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1研究