AUTOMATED ENGINE DATA DIAGNOSTIC ANALYSIS
First Claim
3-1. The method of claim 1, wherein at least one of the scalars represents an additive relationship between values of the operational data and values predicted by the baseline thermodynamic model.
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Accused Products
Abstract
A method for diagnosing potential faults reflected in operational data for a turbine engine includes the steps of generating a diagnostic pattern for the operational data and comparing the diagnostic pattern with a plurality of historical patterns, to thereby identify one or more likely potential faults reflected in the operational data. The diagnostic pattern comprises a plurality of scalars. Each scalar represents an arithmetic relationship between values of the operational data and values predicted by a baseline thermodynamic model. Each historical pattern is linked to one or more specific faults.
45 Citations
20 Claims
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3-1. The method of claim 1, wherein at least one of the scalars represents an additive relationship between values of the operational data and values predicted by the baseline thermodynamic model.
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11. A program product for diagnosing potential faults reflected in operational data for a turbine engine, the program product comprising:
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(a) a program configured to; generate a diagnostic pattern for the operational data, the diagnostic pattern comprising a plurality of scalars, each scalar representing an arithmetic relationship between values of the operational data and values predicted by a baseline thermodynamic model; and compare the diagnostic pattern with a plurality of historical patterns, each historical pattern linked to one or more specific faults, to thereby identify one or more likely potential faults reflected in the operational data; and (b) a computer-readable signal bearing media bearing the program. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A program product for diagnosing potential faults reflected in operational data for a turbine engine, the program product comprising:
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(a) a program configured to; generate a matrix of operating parameter perturbations to simulate a plurality of engine faults; run the matrix through the baseline thermodynamic model, to thereby generate a historical pattern for each fault, each historical pattern representing a deviation from the baseline thermodynamic model resulting from the fault; generate a diagnostic pattern for the operational data, the diagnostic pattern comprising a plurality of scalars, each scalar representing an arithmetic relationship between values of the operational data and values predicted by the baseline thermodynamic model; compare the diagnostic pattern with a plurality of historical diagnostic patterns, each historical pattern linked to one or more specific faults, to thereby identify multiple likely potential faults based at least in part on the comparison of the diagnostic pattern with the plurality of historical patterns, each likely potential fault having a different historical pattern; assign probability values to each of the identified likely potential faults based at least in part on the comparison between the diagnostic pattern and the plurality of historical patterns, each probability value representing a probability that the engine has a particular fault; and generate user instructions for further diagnosis of the multiple likely potential faults, based at least in part on the assigned probability values; and (b) a computer-readable signal bearing media bearing the program.
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Specification