INTELLIGENT CONDITION MONITORING AND FAULT DIAGNOSTIC SYSTEM FOR PREVENTATIVE MAINTENANCE
First Claim
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1. A system for condition monitoring and fault diagnosis comprising:
- a first controller having a processor configured to perform a data collection function that acquires time histories of selected variables for one or more of the components according to specified sampling parameters;
a second controller having a processor configured to perform a pre-processing function that calculates specified characteristics of each of the time histories individually;
a third controller having a processor configured to perform an analysis function for evaluating the specified characteristics of each of the individual time histories to produce one or more hypotheses of a condition of the one or more components; and
a fourth controller having a processor configured to perform a reasoning function for determining the condition of the one or more components from the one or more hypotheses;
wherein multiple instances of each function reside in progressively higher level controllers within a machine being monitored such that data required for health monitoring and fault diagnostic purposes are used at the level where intelligence to process that data is present.
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Abstract
A system for condition monitoring and fault diagnosis includes a data collection function that acquires time histories of selected variables for one or more of the components, a pre-processing function that calculates specified characteristics of the time histories, an analysis function for evaluating the characteristics to produce one or more hypotheses of a condition of the one or more components, and a reasoning function for determining the condition of the one or more components from the one or more hypotheses.
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Citations
10 Claims
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1. A system for condition monitoring and fault diagnosis comprising:
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a first controller having a processor configured to perform a data collection function that acquires time histories of selected variables for one or more of the components according to specified sampling parameters; a second controller having a processor configured to perform a pre-processing function that calculates specified characteristics of each of the time histories individually; a third controller having a processor configured to perform an analysis function for evaluating the specified characteristics of each of the individual time histories to produce one or more hypotheses of a condition of the one or more components; and a fourth controller having a processor configured to perform a reasoning function for determining the condition of the one or more components from the one or more hypotheses; wherein multiple instances of each function reside in progressively higher level controllers within a machine being monitored such that data required for health monitoring and fault diagnostic purposes are used at the level where intelligence to process that data is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of component condition monitoring and fault diagnosis comprising:
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acquiring time histories of selected variables for one or more of the components according to specified sampling parameters; calculating specified characteristics of each of the time histories individually; evaluating the specified characteristics of each of the individual time histories to produce one or more hypotheses of a condition of the one or more components; determining the condition of the one or more components from the one or more hypotheses; and utilizing the determined condition of the one or more components to determine if preventative maintenance or service is required for the components; wherein multiple instances of processors configured to perform acquiring time histories, calculating specified characteristics, evaluating the specified characteristics, determining the condition of the one or more components and utilizing the determined condition reside in progressively higher level controllers within a machine being monitored such that data required for health monitoring and fault diagnostic purposes are used at the level where intelligence to process that data is present.
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10. A computer readable storage medium encoded with a computer program for component condition monitoring and fault diagnosis, that when run on a computer causes the computer to:
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acquire time histories of selected variables for one or more of the components according to specified sampling parameters; calculate specified characteristics of each of the time histories individually; evaluate the specified characteristics of each of the individual time histories to produce one or more hypotheses of a condition of the one or more components; determine the condition of the one or more components from the one or more hypotheses, and utilize the determined condition of the one or more components to determine if preventative maintenance or service is required for the components.
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Specification