SYSTEM AND METHOD FOR ADVANCED CONDITION MONITORING OF AN ASSET SYSTEM
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Abstract
A method for advanced condition monitoring of an asset system includes sensing actual values of an operating condition for an operating regime of the asset system using at least one sensor; estimating sensed values of the operating condition by using an auto-associative neural network; determining a residual vector between the estimated sensed values and the actual values; and performing a fault diagnostic on the residual vector. In another method, an operating space of the asset system is segmented into operating regimes; the auto-associative neural network determines estimates of actual measured values; a residual vector is determined from the auto-associative neural network; a fault diagnostic is performed on the residual vector; and a change of the operation of the asset system is determined by analysis of the residual vector. An alert is provided if necessary. A smart sensor system includes an on-board processing unit for performing the method of the invention.
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Citations
32 Claims
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1-19. -19. (canceled)
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20. A method for advanced condition monitoring of an asset system, the method comprising the steps of:
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monitoring at least one variable of an asset system using the at least one sensor of a smart sensor system; determining whether the asset system has departed from normal operation; identifying the at least one variable of the asset system indicating the departure from normal operation; and providing an alert if the asset system departs from normal operation. - View Dependent Claims (21, 22, 23, 24, 25, 30, 31, 32)
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26. A method for advanced condition monitoring of an asset system, the method comprising the steps of:
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monitoring a variable of the system asset using a smart sensor; analyzing the time sequential values of the monitored variable by using the group consisting of a Rank Permutation Transformation test, a Hotelling'"'"'s T2 statistic test, and a Likelihood Ratio Test; determining a change of an operating condition of the asset system using the analyzed values; and alerting of the change of the operating condition of the asset system. - View Dependent Claims (27, 28, 29)
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Specification