Fault detection system and associated method
First Claim
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1. A method, comprising:
- using a sensor for obtaining a measured electrical signal from an electrical device comprising an electrical generator coupled to a mechanical device comprising a mechanical drive train, wherein the measured electrical signal is representative of torsional vibrations generated by the mechanical device;
generating a signal signature representative of a bearing fault of a bearing in the mechanical device based on the measured electrical signal;
determining a diagnostic parameter based on a harmonic frequency of the signal signature, geometric dimensions of the bearing, and operating parameters of the mechanical drive train;
determining the bearing fault in the mechanical device based on the diagnostic parameter and taking a corrective action in response to the determined bearing fault.
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Abstract
A method implemented using a processor based device includes obtaining a measured electrical signal from an electrical device coupled to a mechanical device and generating a signal signature representative of a fault in the mechanical device based on the measured electrical signal. The method also includes determining a diagnostic parameter based on a harmonic frequency of the signal signature and determining the fault in the mechanical device based on the diagnostic parameter.
20 Citations
23 Claims
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1. A method, comprising:
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using a sensor for obtaining a measured electrical signal from an electrical device comprising an electrical generator coupled to a mechanical device comprising a mechanical drive train, wherein the measured electrical signal is representative of torsional vibrations generated by the mechanical device; generating a signal signature representative of a bearing fault of a bearing in the mechanical device based on the measured electrical signal; determining a diagnostic parameter based on a harmonic frequency of the signal signature, geometric dimensions of the bearing, and operating parameters of the mechanical drive train; determining the bearing fault in the mechanical device based on the diagnostic parameter and taking a corrective action in response to the determined bearing fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a mechanical device comprising a mechanical drive train; an electrical device comprising an electrical generator coupled to the mechanical device; a sensor for obtaining a measured electrical signal representative of torsional vibrations generated by the mechanical device; and a processor based device configured to; receive the measured electrical signal; generate a signal signature representative of a bearing fault of a bearing in the mechanical device based on the measured electrical signal; determine a diagnostic parameter based on a harmonic frequency of the signal signature, geometric dimensions of the bearing, and operating parameters of the mechanical drive train; determine the bearing fault in the mechanical device based on the diagnostic parameter and taking a corrective action in response to the determined bearing fault. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A non-transitory computer readable medium encoded with a program to instruct a processor based device to:
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obtain a measured electrical signal from an electrical device comprising an electrical generator coupled to a mechanical device comprising a mechanical drive train, wherein the measured electrical signal is obtained using a sensor and is representative of torsional vibrations generated by the mechanical device; generate a signal signature representative of a bearing fault of a bearing in the mechanical device based on the measured electrical signal; determine a diagnostic parameter based on a harmonic frequency of the signal signature, geometric dimensions of the bearing, and operating parameters of the mechanical drive train; determine the bearing fault in the mechanical device based on the diagnostic parameter and taking a corrective action in response to the determined bearing fault.
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Specification