無(wú)人傾轉(zhuǎn)旋翼飛行器機(jī)理與系統(tǒng)辨識(shí)綜合建模技術(shù)研究.pdf

1、南京航空航天大學(xué)碩士學(xué)位論文無(wú)人傾轉(zhuǎn)旋翼飛行器機(jī)理與系統(tǒng)辨識(shí)綜合建模技術(shù)研究姓名：付青濤申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：飛行器設(shè)計(jì)指導(dǎo)教師：宋彥國(guó)201103無(wú)人傾轉(zhuǎn)旋翼飛行器機(jī)理與系統(tǒng)辨識(shí)綜合建模技術(shù)研究IIABSTRACTThetiltrotaircraftisanewtypeofaircraftsharesthecommonfeaturesofhelicopterfixedwingaircraft.Itcantakeofflvertica

2、llylikeahelicopter，canflyfwardathighspeedliketheaircraft.Becauseoftheexcellentfeaturesithascomplexstructurelotsoftechnicaldifficulties.Establishingthemodelofflightdynamicsisanimptantpartoftheresearchonthetiltrotaircraftc

3、ontrolsystem.Twomethods—mechanismmodelingsystemidentificationmodeling—areusedtoestablishunmannedtiltrotaircraftmodel.Firstlywedevelopacomplexnonlineardynamictiltrotaircraftmodelbyusingthemechanismmodelingextendthemodelso

4、thatitcanalsobeappliedtothehelicopter.Secondlywelinearizethedynamicsmodelneartheequilibriumpointbasedonasmalldisturbancehypothesis.Thirdlyweverifythecrectnessofthemodelingmethodbytrimmingthehelicopter.Atlastsystemidentif

5、icationwasconductedtheinitialmodelisdevelopedbyusingsubspaceidentificationmethodthefinaloptimizedmodelisconstructedbypredictionerrmethod.Theflightmechanicsmodeofthetiltrotaircraftissuccessfullyidentifiedthroughsimulation