Systems and methods for predicting failure of electronic systems and assessing level of degradation and remaining useful life
First Claim
1. A method for monitoring the health-state for electronic equipment, comprising:
- measuring current and voltage at an input and an output of the electronic equipment and acquiring data therefrom;
storing the measured data in a memory;
using a processor having access to the measured data, calculating performance metrics for the equipment;
separating the measured data into a plurality of data classes;
generating performance models for at least one data class;
extracting diagnostic features from measured data values by comparing calculated performance metrics with the performance models; and
identifying the source and severity of a fault based upon the diagnostic features.
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Accused Products
Abstract
Disclosed are systems and methods for prognostic health management (PHM) of electronic systems. Such systems and methods present challenges traditionally viewed as either insurmountable or otherwise not worth the cost of pursuit. The systems and methods are directed to the health monitoring and failure prediction of electronic systems, including the diagnostic methods employed to assess current health state and prognostic methods for the prediction of electronic system failures and remaining useful life. The disclosed methodologies include three techniques: (1) use of existing electronic systems data (circuit as a sensor); (2) use of available external measurements as condition indicators and degradation assessor; and (3) performance assessment metrics derived from available external measurements.
73 Citations
29 Claims
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1. A method for monitoring the health-state for electronic equipment, comprising:
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measuring current and voltage at an input and an output of the electronic equipment and acquiring data therefrom; storing the measured data in a memory; using a processor having access to the measured data, calculating performance metrics for the equipment; separating the measured data into a plurality of data classes; generating performance models for at least one data class; extracting diagnostic features from measured data values by comparing calculated performance metrics with the performance models; and identifying the source and severity of a fault based upon the diagnostic features. - View Dependent Claims (2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29)
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7. A method for monitoring the health-state for electronic equipment, comprising:
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measuring current and voltage at an input and an output of the electronic equipment and acquiring data therefrom; storing the measured data in a memory; using a processor having access to the measured data, calculating performance metrics for the equipment; separating the measured data into a plurality of data classes; generating performance models for at least one data class; extracting diagnostic features from measured data values by comparing calculated performance metrics with the performance models, wherein extracting diagnostic features includes signal processing; and identifying the source and severity of a fault based upon the diagnostic features.
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9. A method for monitoring the health-state for electronic equipment, comprising:
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measuring current and voltage at an input and an output of the electronic equipment and acquiring data therefrom, wherein said electronic equipment is an electric power converter used to convert power from one form to at least another form; storing the measured data in a memory using a processor having access to the measured data, calculating performance metrics for the equipment; separating the measured data into a plurality of data classes; generating performance models for at least one data class; extracting diagnostic features from measured data values by comparing calculated performance metrics with the performance models; and identifying the source and severity of a fault based upon the diagnostic features. - View Dependent Claims (21, 22)
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14. A method for monitoring the health-state for electronic equipment, comprising:
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measuring current and voltage at an input and an output of the electronic equipment and acquiring data therefrom, wherein said electronic equipment includes a plurality of electronic circuit components; storing the measured data in a memory; using a processor having access to the measured data, calculating performance metrics for the equipment; separating the measured data into a plurality of data classes; generating performance models for at least one data class; extracting diagnostic features from measured data values by comparing calculated performance metrics with the performance models; and identifying the source and severity of a fault based upon the diagnostic features. - View Dependent Claims (15, 16, 17)
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Specification