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• W4387497232 startingPage "14673" @default.
• W4387497232 abstract "Machine learning techniques are a widespread approach to monitoring and diagnosing faults in electrical machines. These techniques extract information from collected signals and classify the health conditions of internal components. Among all internal components, bearings present the highest failure rate. Classifiers commonly employ vibration data acquired from electrical machines, which can indicate different levels of bearing failure severity. Given the circumstances, this work proposes a methodology for detecting early bearing failures in wind turbines, applying classifiers that rely on Hjorth parameters. The Hjorth parameters were applied to analyze vibration signals collected from experiments to distinguish states of normal functioning and states of malfunction, hence enabling the classification of distinct conditions. After the labeling stage using Hjorth parameters, classifiers were employed to provide an automatic early fault identification model, with the decision tree, random forest, support vector machine, and k-nearest neighbors methods presenting accuracy levels of over 95%. Notably, the accuracy of the classifiers was maintained even after undergoing a dimensionality reduction process. Therefore, it can be stated that Hjorth parameters provide a feasible alternative for identifying early faults in wind generators through time-series analysis." @default.
• W4387497232 created "2023-10-11" @default.
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• W4387497232 date "2023-10-10" @default.
• W4387497232 modified "2023-10-12" @default.
• W4387497232 title "Diagnostics of Early Faults in Wind Generator Bearings Using Hjorth Parameters" @default.
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• W4387497232 doi "https://doi.org/10.3390/su152014673" @default.
• W4387497232 hasPublicationYear "2023" @default.
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