System and method for improving accuracy of baseline models
First Claim
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1. A system for performing engine baseline modeling, comprising:
- an engine service database containing engine data, wherein the engine data includes at least time-varying engine data;
a preprocessor for processing the engine data into a predetermined format;
an engine baseline modeling component that builds an initial engine baseline model from the preprocessed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions,wherein the engine baseline modeling component;
applies a smoothing algorithm to the initial engine baseline model to generate a smoothed effect,eliminates the smoothed effect from the initial engine baseline model to isolate a plurality of deterioration time effects on a measured parameter, andremoves the deterioration time effects from the initial engine baseline model to generate a detrended engine baseline model; and
a model diagnostic component that evaluates the performance of the detrended engine baseline model.
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Abstract
System, method and computer-readable medium for baseline modeling a product or process. A service database contains process data. A preprocessor processes the data into a predetermined format. A baseline modeling component builds a baseline model from the preprocessed data, wherein the baseline model relates process performance variables as a function of process operating conditions.
93 Citations
35 Claims
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1. A system for performing engine baseline modeling, comprising:
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an engine service database containing engine data, wherein the engine data includes at least time-varying engine data; a preprocessor for processing the engine data into a predetermined format; an engine baseline modeling component that builds an initial engine baseline model from the preprocessed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions, wherein the engine baseline modeling component; applies a smoothing algorithm to the initial engine baseline model to generate a smoothed effect, eliminates the smoothed effect from the initial engine baseline model to isolate a plurality of deterioration time effects on a measured parameter, and removes the deterioration time effects from the initial engine baseline model to generate a detrended engine baseline model; and a model diagnostic component that evaluates the performance of the detrended engine baseline model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for performing engine baseline modeling, comprising:
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an engine service database containing engine data; a preprocessor for processing the engine data into a predetermined format, wherein the preprocessor comprises a data segmenting component that segments the engine data into a plurality of groups; an engine baseline modeling component that builds an initial engine baseline model from the preprocessed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions, wherein the engine baseline modeling component identifies correlated groups of engine data based upon the initial engine baseline model, wherein the engine baseline modeling component combines data from correlated groups, and wherein the engine baseline modeling component builds a final engine baseline model from the combined data using a regression analysis; and a model diagnostic component that evaluates the performance of the final engine baseline model. - View Dependent Claims (10)
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11. A system for performing engine baseline modeling, comprising:
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an engine service database containing engine data; a preprocessor for processing the engine data into a predetermined format, wherein the preprocessor comprises a data segmenting component that segments the engine data into a plurality of groups; an engine baseline modeling component that builds an initial engine baseline model from the preprocessed data using a regression analysis, the initial engine baseline model represented by a plurality of parameter estimates, wherein the regression analysis relates engine performance variables as a function of engine operating conditions, wherein the engine baseline modeling component identifies segments relating to related engines, wherein the engine baseline modeling component smoothes the parameter estimates for each of the identified related engine segments, and wherein the engine baseline modeling component builds a final engine baseline model from the averaged data using a regression analysis; and a model diagnostic component that evaluates the performance of the final engine baseline model.
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12. A method for performing engine baseline modeling, comprising:
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storing engine data in an engine service database, wherein the engine data includes at least time-varying engine data; processing the engine data into a predetermined format; building an initial engine baseline model from the processed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions, applying a smoothing algorithm to the initial engine baseline model to generate a smoothed effect; eliminating the smoothed effect from the initial engine baseline model to isolate a plurality of deterioration time effects on a measured parameter; and removing the deterioration time effects from the initial engine baseline model to generate a detrended engine baseline model; and using the detrended baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for performing engine baseline modeling, comprising:
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storing engine data in an engine service database; processing the engine data into a predetermined format; segmenting the engine data into a plurality of groups; building an initial engine baseline model from the processed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions; identifying correlated groups of engine data based upon the initial engine baseline model; combining data from correlated groups; building a final engine baseline model from the combined data using a regression analysis; and using the final engine baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems. - View Dependent Claims (22, 34)
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23. A method for performing engine baseline modeling, comprising:
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storing engine data in an engine service database; processing the engine data into a predetermined format; segmenting the engine data into a plurality of groups; building an initial engine baseline model from the processed data using a regression analysis, the initial engine baseline model represented by a plurality of parameter estimates, wherein the regression analysis relates engine performance variables as a function of engine operating conditions; identifying segments relating to related engines; smoothing the parameter estimates for each of the identified related engine segments; building a final engine baseline model from the averaged data using a regression analysis; and using the final engine baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems.
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24. A computer-readable medium storing computer instructions for instructing a computer system to perform engine baseline modeling, the computer instructions comprising:
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one or more instructions for storing engine data in an engine service database, wherein the engine data includes at least time-varying engine data; one or more instructions for processing the engine data into a predetermined format; one or more instructions for building an initial engine baseline model from the processed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions; one or more instructions for applying a smoothing algorithm to the initial engine baseline model to generate a smoothed effect; one or more instructions for eliminating the smoothed effect from the initial engine baseline model to isolate a plurality of deterioration time effects on a measured parameter; and one or more instructions for removing the deterioration time effects from the initial engine baseline model to generate a detrended engine baseline model; and one or more instructions for using the detrended baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A computer-readable medium storing computer instructions for instructing a computer system to perform engine baseline modeling, the computer instructions comprising:
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one or more instructions for storing engine data in an engine service database; one or more instructions for processing the engine data into a predetermined format; one or more instructions for segmenting the engine data into a plurality of groups; one or more instructions for building an initial engine baseline model from the processed data using a regression analysis, wherein the regression analysis relates engine performance variables as a function of engine operating conditions; one or more instructions for identifying correlated groups of engine data based upon the initial engine baseline model; one or more instructions for combining data from correlated groups; one or more instructions for building a final engine baseline model from the combined data using a regression analysis, and one or more instructions for using the final engine baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems.
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35. A computer-readable medium storing computer instructions for instructing a computer system to perform engine baseline modeling, the computer instructions comprising:
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one or more instructions for storing engine data in an engine service database; one or more instructions for processing the engine data into a predetermined format; one or more instructions for segmenting the engine data into a plurality of groups; one or more instructions for building an initial engine baseline model from the processed data using a regression analysis, the initial engine baseline model represented by a plurality of parameter estimates, wherein the regression analysis relates engine performance variables as a function of engine operating conditions; one or more instructions for identifying segments relating to related engines; one or more instructions for smoothing the parameter estimates for each of the identified related engine segments; one or more instructions for building a final engine baseline model from the averaged data using a regression analysis, and one or more instructions for using the final engine baseline model to perform at least one of monitoring engine status, predicting future engine behavior, diagnosing engine faults, determining engine performance, determining engine quality and designing new engine systems.
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Specification