资源描述：
《民机飞行特情状态预测与改出控制分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、民机飞行特情状态预测及改出控制研究AbstractCivilaircraftemergencythreatensflightsafetyseriously.Withthedevelopmentoftheaircrafts'systemstability,theproportionofflightemergency,whicharecausedbytheatmosphericdisturbancesincreasesgreatly.Whentheaircraftexecutethescheduledtask,howtorestrictflig
2、htstateinnormalflightenvelopeisthekeytoensureflightsafety.Basedonacertaincivilaircraftmodelingdata,thewholeflightdynamicsmodelandlinearparameter-varyingmodelwerebuilt.Inordertosafelyescapeflightemergency,themovinghorizoncontrolwasstudied.Furthermore,thispaperdoesfurtherres
3、earchonthecontrolstrategyaboutaircrafts’glideslopecapturingandtrackingunderwindshear.Themainresearchcontentsareasfollows:(1)Thewholenonlinearkinematicsanddynamicsmodelwasbuilt.Baseonacertaincivilaircraftmodelingdata,theaerodynamicforceandmomentmodelwassystematicallyanalyze
4、d,whiletheautomaticflightcontrolsystemwasbuilt.Furthermore,modelvalidationwasstudied.Thewholemodelhasbeenusedintheengineeringapplication.(2)Anear-grounddynamicsmodelunderwinddisturbancewasdeduced.Furthermore,alandinggearmodelforabnormaltouchdownprocedurewasestablished.Base
5、donpopularcivilaircraft’smodelingdataandflightdatarecord(FDR),overweightlandingandgoaroundafterabnormaltouchdownunderwinddisturbanceweresimulated.(3)Theaircraftlinearparameter-varyingmodelduringtheglidepathcaptureandtrackingwasbuilt.Eachaerodynamiccoefficientwassystematica
6、llyanalyzedandsimplifiedbythespecialflightcondition.Usingfunctionsubstitutemethod,theaircraftlongitude3DOFlinearparameter-varyingmodelwasbuilt.Furthermore,themodelvalidationwasstudied.(4)Basedonthelinearparameter-varyingmodeloflargecivilaircraft,themodelpredictivecontrolwa
7、sstudiedtoprotectaircraftagainstloss-of-controlduringtakeoffandlanding.Theflightenvelopewasquantizedtostaterestriction.Furthermore,anon-linemodelpredictivecontrollerwasdesigned.Thevalidityofthecontrollerisdemonstratedbyaircrafts’glideslopecapturingandtrackingsimulation.Key
8、words:,Linearparameter-varyingmodel,flightenvelopprotect,modelpredictioncontrol,windshear
