DIAGNOSTIC AID PROVIDED BY AUTOCORRELATION

摘要

In this paper, the focus is placed on the analysis of the output of an accelerometer placed on rotating machinery (generally attached to the bearing housing) in an industrial environment. The emphasis will be on the diagnostic aid provided by a not widely used function identified as the Autocorrelation Coefficient Function. The autocorrelation coefficient data are computed from the same digital time waveform from which the widely used spectra data are computed. It will be demonstrated through case studies the autocorrelation coefficient are very complimentary to the spectra for diagnosis of vibration data.