转子轴承系统油膜失稳状态分析及辨识

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1、密级公开分类号ＴＰ２０６＋．３＇ＡＮＸＩＴＥＣＨＮＯＬＯＧＩＣＡＬＵＮＩＶＥＲＳＩＴＹ硕士学位论文？转子轴承系统油膜失稳状态分析及辨识作者：孙攀龙指导教师：汪庆华副教授申请学位学科：机械制造及其自动化２０１８年５月４日密级公开分类号TP206+.3XI’ANTECHNOLOGICALUNIVERSITY硕士学位论文题目:转子轴承系统油膜失稳状态分析及辨识作者：孙攀龙指导教师：汪庆华副教授申请学位学科：机械制造及其自动化2018年5月4日关键词：油膜失稳；不平衡力；Sugen

2、o模糊积分；轴心轨迹；BP-FIComparedwiththenumericalanalysisresults,thenonlineardynamicmodelestablishedinthispapercantrulyreflecttheimpactoftheunbalancedquantityontheoilfilminstabilityprocess.Inordertorealizethefaultidentification,theotherfourfaultsarealsosimulatedintheexperime

3、ntsincludingthenormalrotationtest,themisalignmenttest,therubbingtestandthemisalignmentunbalancedexperiment.Therecognitioneffectofasinglelearningmachineisinfluencedbytheinitialparameters,andtheBP-FImodelisintroduced.TheBP-FIfusiontechnologyisappliedtothefaultidentifi

4、cationoftherotorbearingsystem,whichcanidentifyoilfilminstabilityfailurewithdifferenteccentricratiosanddifferenttypesofrotorsystemfailure.Moreover,theBP-FImodelhasahigherrecognitionrateandbetterstabilitythanasingleclassifier.KeyWords:oilfilminstability;unbalanceforce

5、;sugenofuzzyintegral;axistrajectory;BP-FI目录1绪论.......................................................................................................................................11.1课题来源、研究背景及意义.....................................................................

6、.....................11.1.1课题来源..................................................................................................................11.1.2研究背景及意义......................................................................................................11.2转子

7、轴承系统油膜失稳问题的研究现状......................................................................21.3模糊积分的研究现状......................................................................................................41.4论文安排与主要工作.....................................................

8、.................................................52单跨双转盘转子-轴承系统非线性动力学分析...................................................................