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• W4200522781 abstract "This study proposes a fault diagnosis method (FD) for multistage centrifugal pumps (MCP) using informative ratio principal component analysis (Ir-PCA). To overcome the interference and background noise in the vibration signatures (VS) of the centrifugal pump, the fault diagnosis method selects the fault-specific frequency band (FSFB) in the first step. Statistical features in time, frequency, and wavelet domains were extracted from the fault-specific frequency band. In the second step, all of the extracted features were combined into a single feature vector called a multi-domain feature pool (MDFP). The multi-domain feature pool results in a larger dimension; furthermore, not all of the features are best for representing the centrifugal pump condition and can affect the condition classification accuracy of the classifier. To obtain discriminant features with low dimensions, this paper introduces a novel informative ratio principal component analysis in the third step. The technique first assesses the feature informativeness towards the fault by calculating the informative ratio between the feature within the class scatteredness and between-class distance. To obtain a discriminant set of features with reduced dimensions, principal component analysis was applied to the features with a high informative ratio. The combination of informative ratio-based feature assessment and principal component analysis forms the novel informative ratio principal component analysis. The new set of discriminant features obtained from the novel technique are then provided to the K-nearest neighbor (K-NN) condition classifier for multistage centrifugal pump condition classification. The proposed method outperformed existing state-of-the-art methods in terms of fault classification accuracy." @default.
• W4200522781 created "2021-12-31" @default.
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• W4200522781 date "2021-12-28" @default.
• W4200522781 modified "2023-10-01" @default.
• W4200522781 title "Multistage Centrifugal Pump Fault Diagnosis Using Informative Ratio Principal Component Analysis" @default.
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• W4200522781 doi "https://doi.org/10.3390/s22010179" @default.
• W4200522781 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35009719" @default.
• W4200522781 hasPublicationYear "2021" @default.
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