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Diagnosis of a Pump by Frequency Analysis of Operation Sound  

Lee Sin-Young (군산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.13, no.5, 2004 , pp. 81-86 More about this Journal
Abstract
A fundamental study for developing a system of fault diagnosis of a pump is performed by using neural network. The acoustic signals were obtained and converted to frequency domain for normal products and artificially deformed products. The signals were obtained in various driving frequencies in order to obtain many types of data from a limited number of pumps. The acoustic data in frequency domain were managed to multiples of real driving frequency with the aim of easy comparison. The neural network model used in this study was 3-layer type composed of input, hidden, and output layer. The normalized amplitudes at the multiples of real driving frequency were chosen as units of input layer. Various sets of teach signals made from original data by eliminating some random cases were used in the training. The average errors were approximately proportional to the number of untaught data. The results showed neural network trained by acoustic signals can be used as a simple method for a detection of machine malfuction or fault diagnosis.
Keywords
Neural Network; Acoustic Diagnosis; Pump; Frequency Domain;
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Times Cited By KSCI : 1  (Citation Analysis)
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