Synthesized synchronous sampling and acceleration enveloping for differential bearing damage signature
First Claim
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1. A method of detecting differential bearing damages, the method comprising:
- generating a plurality of speed signals for inner and outer rotating bearing races;
synthesizing a tachometer corresponding to the speed difference of the inner and outer races ; and
synchronously sampling bearing vibration data in response to the synthesized speed difference tachometer signal to generate synthesized cycle domain data corresponding to at least one bearing damage signature.
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Abstract
A system for detecting differential bearing damages includes a synthesized tachometer that generates a tachometer signal corresponding to the race speed difference of a bearing assembly such that the bearing damage speed difference dependency can be eliminated and the damage features can be enhanced. The system also includes acceleration enveloping in the cycle domain to further enhance the damage signatures.
28 Citations
24 Claims
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1. A method of detecting differential bearing damages, the method comprising:
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generating a plurality of speed signals for inner and outer rotating bearing races; synthesizing a tachometer corresponding to the speed difference of the inner and outer races ; and synchronously sampling bearing vibration data in response to the synthesized speed difference tachometer signal to generate synthesized cycle domain data corresponding to at least one bearing damage signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of enhancing a differential bearing damage signature, the method comprising:
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generating a plurality of speed signals for each differential bearing race; synthesizing at least one tachometer signal for at least one differential bearing race; and synchronously sampling vibration data associated with a differential bearing with respect to race speed differences in response to the plurality of speed signals and the at least one synthesized tachomenter signal to generate synthesized cycle domain data corresponding to at least one bearing damage signature. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for detecting bearing damage, the system comprising:
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a synthesized tachometer configured to generate a speed signal for a bearing assembly such that the speed signal corresponds to the approximate location of a missing tachometer signal based on race speeds of the bearing assembly; and a sampling mechanism configured to synchronously sample vibration data associated with the bearing assembly based on the speed signal to generate synthesized cycle domain data corresponding to at least one bearing assembly damage signature. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification