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Application of LCD-SVD Technique and CRO-SVM Method to Fault Diagnosis for Roller Bearing
2015
Shock and Vibration
Targeting the nonlinear and nonstationary characteristics of vibration signal from fault roller bearing and scarcity of fault samples, a novel method is presented and applied to roller bearing fault diagnosis in this paper. Firstly, the nonlinear and nonstationary vibration signal produced by local faults of roller bearing is decomposed into intrinsic scale components (ISCs) by using local characteristic-scale decomposition (LCD) method and initial feature vector matrices are obtained.
doi:10.1155/2015/847802
fatcat:thixptmq6ngktkxwdvy6xfnnli