 Wysłany: Nie 3:57, 08 Maj 2011 Temat postu: christian louboutin sko Feature extraction based o |
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| Feature extraction based on independent component analysis of complex neural network fault diagnosis
USA20LuisBAlmeida. ICAoflinearandnonlinearmixtureasedonmutualin {ormation. ISTandINESC a 1D, Lis-bon, PortugalMulti-NeuralNetworksforFaultsDiagnosisBasedonICAFeatureExtractionYangShixiJiaoWeidongWuZhaotong (DepartmentofMechanicalEngineering. ZhejiangUniversity, Hangzhou,abercrombie uk, 310027,christian louboutin sko, China) Abstract: Artificialneuralnetwork (ANN). especiallytheself-organizingmap (SOM) basedonunsupervisedlearningisakindofexcellentmethodforpatternsclusteringandrecognition. Independentcomponentanslysis (ICA) isapowe, rfultoolforanalyzingnongaussiandata. InICA. theFASTICAbasedonfixed-pointiterationisakindofANNalgorithmwithhigheffi-ciency. whichisspeciallyappropriatetofeatureextractionofmultivariatedataatrealtime. Inthispaper,alexa mulberry taske, theFASTICAisfirstlyproposedforfeatureextractionofdifferentmechanicalpatterns (includingnormal,Franklin and Marshall uk, gearfaultandloosefoundation) · followedbycertaintypicalANN (forexampleRBFNorSOM), whichimplementsthefinalclassification. BymeansofICAandthefurtherfeatureextractionstrategybasedonresidualmutualinformation (RMI),franklin and marshall clothing, higherthansecondorderfeaturesembeddedinmulti-channelvibrationmeasurementscanbecapturedeffectively. Thus, mechanicalfaultpatternscanberecog-nizedcorrectly. TheresultsfromcontrastexperimentsshowedthatthecompoundICA-SOMclassifiercanbeconstructedinsimplerway, andclassifyvariousfaultpatternsatconsiderableaccuracy, bothofwhichimplyitsgreatpotentialinhealthcon-ditionmonitoringofmachines. Keywords: faultdiagnosis; neuralnetwork; independentcomponentanalysis first author : Yang Shixi , male, associate professor , PhD . January 1968 students. Tel : (0571) 87951924; E-mail: yangsx @ zju. edu. cn 相关的主题文章： mac cosmetics discount Development of the Ministry oakley brasil Piezoelectric Vibration Control of S Franklin and Marshall uk Early in the concept of b |
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