Failure prediction apparatus and method
First Claim
1. Apparatus for predicting failure in a system, the apparatus comprising:
- a measurement unit for repeatedly measuring a disorder indicator of said system, wherein the disorder indicator represents a non-designated output of said system, the non-designated output represents waste of said system, anda comparator for comparing obtained measurements of said disorder indicator with a predetermined statistical description of said disorder indicator to determine whether a deviation is present between presently measured values of said disorder indicator and said predetermined statistical description, said apparatus being operable to issue a failure prediction upon determination that such a deviation is statistically significant,wherein said disorder indicator provides non-specific failure indications.
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Abstract
An apparatus and method for predicting failure in a system is provided having a measurement unit for repeatedly measuring a disorder indicator of the system, and a comparator for comparing obtained measurements of the disorder indicator with a predetermined statistical description of the disorder indicator. The comparison is used to determine whether a deviation is present between presently measured values of the disorder indicator and the statistical description. The apparatus issues a failure prediction upon determination of the presence of such a deviation. The apparatus is able to use routine monitoring of the system and relies on its own statistical analysis of the behavior of the disorder indicator, to provide fault prediction which is non-specific to the type of fault.
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Citations
26 Claims
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1. Apparatus for predicting failure in a system, the apparatus comprising:
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a measurement unit for repeatedly measuring a disorder indicator of said system, wherein the disorder indicator represents a non-designated output of said system, the non-designated output represents waste of said system, and a comparator for comparing obtained measurements of said disorder indicator with a predetermined statistical description of said disorder indicator to determine whether a deviation is present between presently measured values of said disorder indicator and said predetermined statistical description, said apparatus being operable to issue a failure prediction upon determination that such a deviation is statistically significant, wherein said disorder indicator provides non-specific failure indications. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Apparatus for predicting failure in a system, the apparatus comprising:
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a measurement unit for repeatedly measuring a disorder indicator of said system, wherein the disorder indicator represents a non-designated output of said system, and the non-designated output represents waste of said system, a statistical unit for building up a statistical description of said disorder indicator using measurements taken via said measurement unit during a training phase of operation of said system, and a system thresholder, for using said statistical description to apply thresholds to said disorder indicator to predict system failure, wherein said disorder indicator provides failure indications of general abnormalities.
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8. A method of failure prediction comprising:
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repeatedly measuring a disorder indicator of a system, wherein the disorder indicator represents a non-designated output of said system, and the non-designated output represents waste of said system, comparing said disorder indicator with a statistical description of idealized behavior of said disorder indicator, determining from said comparison whether a deviation is present in behavior of said disorder indicator, and issuing an alert in the event of determination of such a deviation being of statistical significance, wherein said disorder indicator provides non-specific failure indications based on a top down approach. - View Dependent Claims (9, 10, 11)
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12. A method of failure prediction in a software system, the method comprising:
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selecting a measurable indicator of a level of disorder in said software system, wherein said measurable indicator provides non specific failure indication, and is selected without detailed knowledge of said software system, obtaining a statistical description of behavior of said measurable indicator within said software system, repeatedly measuring said measurable indicator during operation of said software system, wherein said measurable indicator represents a non-designated output of said software system, comparing said measurable indicator with said statistical description, determining from said comparison whether a deviation is present in behavior of said measurable indicator, and issuing an alert in the event of determination of such a deviation being of statistical significance.
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13. A data carrier having stored thereon computer executable instructions which when combined with a general purpose computer is operable to provide:
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a measurement unit for repeatedly measuring a disorder indicator of a software system, wherein the disorder indicator represents a non-designated output of said software system and is a byproduct of operation of said software system, and a comparator for comparing obtained measurements of said disorder indicator with a predetermined statistical description of said disorder indicator to determine whether a deviation is present between presently measured values of said disorder indicator and said predetermined statistical description, said combination being operable to issue a failure prediction upon determination that such a deviation is statistically significant.
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14. Apparatus for measuring quality of software operating in a system, the apparatus comprising:
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a measurement unit for repeatedly measuring a disorder indicator of said system, wherein the disorder indicator represents a non-designated output of said system, and the non-designated output represents waste of said system, and a comparator for comparing obtained measurements of said disorder indicator with a predetermined statistical description of said disorder indicator to determine whether a deviation is present between presently measured values of said disorder indicator and said predetermined statistical description, said apparatus being operable to issue a quality score of said software based on an extent of said deviation, wherein said disorder indicator gives statically viable but non-specific failure indications.
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15. A method for predicting failure in a computing system comprising:
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automatically determining a disorder indicator representing waste that said computing system produces; repeatedly measuring the disorder indicator of said computing system; comparing obtained measurements of said disorder indicator with a predetermined statistical description of said disorder indicator to determine whether a deviation is present between presently measured values of said disorder indicator and said predetermined statistical description, wherein said disorder indicator predicts faults that are a result of ill-defined or unexpected phenomena; and issuing a failure prediction upon determination that such a deviation is statistically significant. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification