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Wavelet-Based SVM System for Evaluation of Wear States and Remaining Life Time
Wavelet-Based SVM System for Evaluation of Wear States and Remaining Life Time [1447]
Автор(ы): M.-S. Saadawia, G. Li, D. Soffker
Издательство: DEStech Publications, Inc., 439 North Duke Street, Lancaster, Pennsylvania 17602 U.S.A., www.destechpub.com
Количество страниц: 8
Год: 2011
Аннотация[414 КБ] 
Код: 10403
Описание
An approach for developing a fault diagnosis and prognosis system to support condition-based maintenance of wear parts is presented. The system is used as a prewarning module to detect the necessity for replacing wear parts of production machines and to evaluate the remaining life time of the supervised part. The system is based on a support vector machine as a signal-based classification technique and as a feature fusion tool. Relevant features are extracted using wavelet transform techniques with the aid of wavelet energy and entropy measures. A new approach for feature-based resampling is presented based on a multi-level wavelet decomposition. Measurements were processed to select the most reliable combination of characteristics to depend on. A related change index is proposed based on the decision value of the SVM to evaluate the remaining life time.
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