Energy Separation System, Method, and Program Product for Detecting Faulty Bearings
First Claim
1. A method for detecting a faulty bearing comprising the steps of:
- (a) converting at least one mechanical energy to at least one electrical signal;
(b) filtering said an electrical signal;
(c) calculating a bearing fault feature, said calculation being at least in part based on an energy ratio between an impulsive signal and a periodic signal; and
(d) at least in part based on said bearing fault feature, deciding if said faulty bearings exist.
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Accused Products
Abstract
A faulty bearing detection system provides means and methods for detecting a fault associated with a bearing. The fault detection system includes a vehicle with bearings and a computerized system to separate multiple vibrations from, chiefly the shaft, to identify the amount of faults in the bearings. The system converts mechanical information to electrical information, filters periodic signals for removal, filters background noise, and performs an energy ratio calculation for determining a potential fault condition and communicates the status of a bearing fault condition. By separating the bearing faulty impulse signals from the raw vibration signals, the bearing faulty signal-to-noise ratio is improved. Furthermore, by calculating the energy ratio between the bearing faulty signals and the periodic vibration signals, the loading effects added to the traditional bearing features are removed.
4 Citations
18 Claims
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1. A method for detecting a faulty bearing comprising the steps of:
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(a) converting at least one mechanical energy to at least one electrical signal; (b) filtering said an electrical signal; (c) calculating a bearing fault feature, said calculation being at least in part based on an energy ratio between an impulsive signal and a periodic signal; and (d) at least in part based on said bearing fault feature, deciding if said faulty bearings exist. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for detecting faulty bearings comprising:
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means for converting at least one mechanical energy to at least one electrical signal; means for filtering said at least one electrical signal; means for calculating a ratio; and means for deciding if said faulty bearings exist.
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18. A computer program product comprising:
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(a) computer code for detecting a periodic vibration signal from a faulty bearing; (b) computer code for detecting an impulse signal from said faulty bearing; (c) computer code for detecting a background noise signal from said faulty bearing; (d) computer code for converting said periodic vibration signal to an electrical signal; (e) computer code for converting said impulse signal to said electrical signal; (f) computer code for converting said background noise signal to said electrical signal; (g) computer code for summing said periodic vibration signal, and summing impulse signal, and said background noise signal; (h) computer code for separating said periodic vibration signal from said impulse signal; (i) computer code for delaying said periodic vibration signal; (j) computer code for multiplying said periodic vibration signal; (k) computer code for subtracting said periodic vibration signal from said impulse signal; (l) computer code for filtering said background noise signal; (m) computer code for separating said impulse signal from said periodic vibration signal; (n) computer code for calculating a ratio; and (o) computer code for deciding if said faulty bearing exists.
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Specification