Fault diagnosis method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 30, 2003
Grant Date -
Nov 1, 2001
app pub date -
Apr 17, 2001
filing date -
Apr 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fault diagnosis apparatus comprises a vibration sensor for detecting vibration waveforms being generating by machinery or equipment, a cumulative frequency computing device for obtaining a cumulative frequency distribution curve of an absolute value of the vibration waveforms detected by the vibration sensor, a maximum value detecting device for obtaining a maximum value x.sub.p of the vibration waveforms detected by the vibration sensor, a peak ratio computing device for obtaining the peak ratio .beta..sub.1 of an equivalent effective value .sigma..sub.eq in the cumulative frequency distribution curve computed by the cumulative frequency computing device to the maximum value x.sub.p computed by the maximum value detecting device, and a fault diagnosing device for diagnosing the degree of fault of the machinery or equipment from the magnitude of the peak ratio .beta..sub.1 computed by the peak ratio computing device.
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