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Large delay embedding method based on fault feature extraction unit

outenTC, Taken ~ F. ... DenRleekCMEsdmatic 】 ofdimensionofanoisyattactor. PhysRevE, 】 994:53 (3 ): 186 】】 85l a 7HayJM, NelsonBH, BriensCL,[link widoczny dla zalogowanych], eta1. Thecalculationofthecharacteristicsofachaoticattractorin05050 coral calyx 3 Wang Weijun delay embedding method based on fault feature extraction unit is too 367agassolldfluldizedbed. Chem. Engr. Sci. 1995; 50 (3) :373-3808BaiD + BiHT, GraceJR. Chaoticbehavior0ffluidizedbedasedonpressureandvoidaefluetuatUonsAICHEJ. . 1997; 43 (5) :1357-13619HilbornRC-DingM. Optima] reconstructionspaceforestimatingcorrelationdimensionlnternationaJournaIofBifurearionandChaos. 】 996 {6 (21377-38110KantzH,[link widoczny dla zalogowanych], SchreiberT.] Dimensionestimatesandphysiologma] data.Chaos.1995; 5 (1): 】 43 a J5ResearchonFeatureExtractionofNonlinearFaultsinLargeRotatingMachineryBasedonTimeDelayEmbedding ~ rangWeijunChendinWuZhaotongOTheStateKeyLab.ofVibration.Shock & NoiseShanghaiJiaotongUniversityShanghai.200030) (2SchoolofMechanical & EnergyEngineering.ZhejiangUniversityHangzhou,[link widoczny dla zalogowanych], 310027) AlmtractThetheoryofphasespacereconstructionwithtimedelayembeddingisexplainedcomprehens 】】 yinthispaper Ve ,[link widoczny dla zalogowanych], Andusedtoextractqualitativefeaturesofnonlinearfaultinlargerotatingmachinery-Incontrasttothepseudo-phaseportraitreconstructedfromrawvibrationsignals, themodifiedpseudo-phaseportraitbasedonSVDismoreregularbecausethenoisecanbereduced. Resuhsshowthatthepseudo-phaseportraitisinsomesensesimi] artoanorbit. andcadbeusedtoqualitativelyrecognizedifierentfa ¨ 】 tsKeywords: faultdiagnosis; faultdetection; timedelayembeddingmethod {pseudo-phaseportrait; featureextract1on male + Postdoctoral first author Wang Weijun , l2 months of 1971 students. Phone : (021) 62932221-817lE-mail: wjwan8 @ mail1situ. edu. cn

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