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Bearing abnormal sound detection method?

Date锛2013-9-6 9:37:16

Currently detect bearing abnormal sound in two ways. One is based on acoustic noise detection method, the other is based on the vibration detection method.
(A), the noise detection: the base is less than 20db noise silencer environment, the use of high quality microphone to extract a certain distance and direction signals bearing sound pressure, and by a method of analysis extract the abnormal sound component, is the direct measurement approach abnormal sound.
(B), the vibration detection method: a method for indirect detection of abnormal sound can be divided into qualitative and quantitative assay method parameter detection. Among them, the qualitative detection method is divided into listening and observation abnormal sound vibration waveform method. Quantitative parameter detection method refers to the measured bearing vibration signals measured with abnormal sound-related parameters such as: vibration peak, crest factor to evaluate bearing abnormal sound.
(C), measuring bearing abnormal sound measuring instruments: measuring bearing abnormal sound measuring instruments a lot, for example: Hangzhou Bearing Test & Research Center BANT-1 bearing abnormal sound monitor; Shanghai Institute of Technology S092 bearing bearing vibration (abnormal sound) measuring instrument; Luoyang Bearing Research Institute and Dalian bearing instrument jointly developed S0910-Ⅲ. These bearings bearing vibration measuring instrument can measure the RMS and can measure the reflected acoustic parameters bearing abnormal peak, crest factor and the number of pulses and so on.


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