DIAGNOSIS OF GEAR CONDITION BY COMPARING DATA FROM COUPLED GEARS
First Claim
1. A method for detecting a condition in a device containing a gear train, said gear train having a first gear rotationally coupled to a second gear, said method comprising:
- (a) an evaluation system receiving gear train rotation information relating to rotation of said gear train;
(b) said evaluation system receiving vibration information relating to vibration of said device, said vibration of said device comprising vibration coupled from said gear train;
(c) said evaluation system determining a first condition indicator for said first gear based on processing said vibration information relative to a rotation parameter of said first gear, said rotation parameter of said first gear determined from said gear train rotation information;
(d) said evaluation system determining a second condition indicator for said second gear based on processing said vibration information relative to a rotation parameter of said second gear, said rotation parameter of said second gear determined from said gear train rotation information;
said rotation parameter of said first gear being not equal to said rotation parameter of said second gear;
(e) said evaluation system comparing said first condition indicator with said second condition indicator to generate a comparison condition indicator.
1 Assignment
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Accused Products
Abstract
A method and system for diagnosing gear condition by comparing data collected from each member of a set of coupled gears, including mating gears. Data containing vibrations or other signals from the set of coupled gears are collected. Condition indicators are calculated from the vibration data. The values of these condition indicators are compared for each pair of coupled gears. A divergence of the condition indicators as indicated by the comparison may indicate the presence of a faulted or otherwise anomalous condition. Such indication may be provided to a user. In one variation, the vibration data are used to calculate a synchronous average for each gear and the condition indicators are based on the synchronous average.
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Citations
26 Claims
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1. A method for detecting a condition in a device containing a gear train, said gear train having a first gear rotationally coupled to a second gear, said method comprising:
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(a) an evaluation system receiving gear train rotation information relating to rotation of said gear train; (b) said evaluation system receiving vibration information relating to vibration of said device, said vibration of said device comprising vibration coupled from said gear train; (c) said evaluation system determining a first condition indicator for said first gear based on processing said vibration information relative to a rotation parameter of said first gear, said rotation parameter of said first gear determined from said gear train rotation information; (d) said evaluation system determining a second condition indicator for said second gear based on processing said vibration information relative to a rotation parameter of said second gear, said rotation parameter of said second gear determined from said gear train rotation information;
said rotation parameter of said first gear being not equal to said rotation parameter of said second gear;(e) said evaluation system comparing said first condition indicator with said second condition indicator to generate a comparison condition indicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for determining a condition of a device containing a gear set, said gear set comprising a first gear rotationally coupled to a second gear, said system comprising:
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at least one vibration sensor for vibrational coupling to said device for sensing vibration in said device coupled from said gear set; at least one rotation information source for determining rotation information relating to rotation of said gear set; a processor coupled to said vibration sensor for receiving vibration data from said vibration sensor; said processor configured to determine rotation of said gear set based on said rotation information; said processor configured for determining a rotation of said first gear based on said rotation information and a rotation of said second gear based on said rotation information; said processor configured for determining a first condition indicator based on said vibration data processed synchronously with said rotation of said first gear; said processor configured for determining a second condition indicator based on said vibration data processed synchronously with said rotation of said second gear; said processor configured for determining a comparison condition indicator based on comparing said first condition indicator and said second condition indicator. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable storage medium storing computer software that determines a condition of a device containing a gear set, said gear set comprising a first gear and a second gear in mating contact, said storage medium containing:
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executable code that receives or determines a first condition indicator relating to a condition of said first gear; executable code that receives or determines a second condition indicator relating to a condition of said second gear; executable code that determines a comparison condition indicator based on comparing said first condition indicator and said second condition indicator. - View Dependent Claims (22)
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23. A method for detecting a condition in a device containing a gear train, said gear train having a first gear rotationally coupled to a second gear, said method comprising:
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an evaluation system receiving a first condition indicator indicating a condition of said first gear; said evaluation system receiving a second condition indicator indicating a condition of said second gear; said evaluation system comparing said first condition indicator with said second condition indicator to generate a comparison condition indicator. - View Dependent Claims (24, 25, 26)
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Specification