Extraction of periodic modulation of rotational speed from roller bearing vibration signals using a modulation template matching algorithm

Michael B. Van Dyke, Karl M. Reichard, David C. Swanson

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The periodic modulation of the rotational speed of a machine element such as a bearing element is recognized as a valuable feature in characterizing the physical condition of the machine component. A time domain template matching algorithm is introduced as a non-linear frequency modulation estimation technique for extracting this feature out of a vibration signal from a damaged machine component. The technique is applied to data taken from a damaged railroad car roller bearing. The results are compared with those obtained using a more standard baseband phase demodulation technique. Although the template matching algorithm is computationally expensive, it can be applied to a limited duration raw input signal, resulting in a set of well defined parameters, unlike the baseband demodulation technique which relies on filtering and synchronous averaging over a lengthy time duration.

Original languageEnglish (US)
Pages (from-to)201-206
Number of pages6
JournalProceedings - National Conference on Noise Control Engineering
Volume1
StatePublished - Dec 1 1997
EventProceedings of the 1997 National Conference on Noise Control Engineering , NOISE-CON. Part 2 (of 2) - University Park, PA, USA
Duration: Jun 15 1997Jun 17 1997

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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