Neural network fault diagnostics systems and related method
First Claim
1. A fault diagnostics system for monitoring the operating condition of a host system which includes a plurality of subsystems, comprising:
- neural network means for modeling the performance of each subsystem in a normal operating mode and a plurality of different possible failure modes;
comparator means for comparing the actual performance of each subsystem with the modeled performance thereof in each of the normal and possible failure modes; and
,processing means for making a determination of the operating condition of the host system on the basis of the comparisons made by the comparator means.
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Abstract
A fault diagnostics system for monitoring the operating condition of a host system, e.g., an aircraft, which includes a plurality of subsystems. The fault diagnostics system is preferably implemented in software running on a high-speed neural network processor. The fault diagnostics system constructs a neural network model of the performance of each subsystem in a normal operating mode and each of a plurality of different possible failure modes. The system preferably dynamically predicts the performance of each subsystem based upon the response of each of the neural network models to dynamically changing operating conditions, compares the actual performance of each subsystem with the dynamically predicted performance thereof in each of the normal and possible failure modes, and determines the operating condition of the host system on the basis of these comparisons. In a preferred embodiment, the determining step is carried out by performing a statistical analysis of the comparisons made in the comparing step, e.g., by emloying a comparison voting technique. A related method is also disclosed.
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Citations
20 Claims
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1. A fault diagnostics system for monitoring the operating condition of a host system which includes a plurality of subsystems, comprising:
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neural network means for modeling the performance of each subsystem in a normal operating mode and a plurality of different possible failure modes; comparator means for comparing the actual performance of each subsystem with the modeled performance thereof in each of the normal and possible failure modes; and
,processing means for making a determination of the operating condition of the host system on the basis of the comparisons made by the comparator means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for monitoring the operating condition of a host system which includes a plurality of subsystems, comprising the steps of:
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modeling the performance of each subsystem in a normal operating mode and each of a plurality of different possible failure modes; comparing the actual performance of each subsystem with the modeled performance thereof in each of the normal and possible failure modes; and
,determining the operating condition of the host system on the basis of the comparisons made in the comparing step. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A fault diagnostics system for monitoring the operating condition of a host system which includes a plurality of subsystems, comprising:
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neural network facilities for modeling the performance of each subsystem in a normal operating mode and a plurality of different possible failure modes; facilities for comparing the actual performance of each subsystem with the modeled performance thereof in each of the normal and possible failure modes; and
,facilities for making a determination of the operating condition of the host system on the basis of the comparisons made by the comparator facilities.
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Specification