Method and data processing device for severity assessment of bearing defects using vibration energy
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United States of America Patent
Stats
-
Jun 5, 2018
Issued Date -
Apr 20, 2017
app pub date -
Oct 14, 2016
filing date -
Oct 20, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Method for detecting bearing defect severity based on bearing rotation speed and at least one data sample of sensor data obtained to measure vibrations of a bearing ring is provided. The method includes converting the data sample from time domain to frequency domain to obtain a signal frequency spectrum; determining a defect center frequency of the bearing using the rotation speed; and identifying a predetermined number of frequency peaks of the signal frequency spectrum. A total vibration energy in an overall frequency band including the predetermined number of frequency peaks is first determined; next, for each of the frequency peaks, a peak energy as a spectral energy of signal components giving rise to the frequency peaks is determined; calculating a bearing defect spectral energy using the peak energies; and finally a ratio of the bearing defect spectral energy and a total vibration energy to assess a defect severity is obtained.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- G01H Class
- 244 Applications Filed
- 187 Patents Issued To-Date
- 76.64 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- G01H Class
- 29.55 % this patent is cited more than
- 7 Age
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