METHOD AND SYSTEM FOR ROOT CAUSE ANALYSIS AND QUALITY MONITORING OF SYSTEM-LEVEL FAULTS
First Claim
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1. A method comprising:
- receiving system fault codes, component fault codes, and failure modes;
generating a first level model comprising first level causal relationships and first level causal weights between the system fault codes and the component fault codes;
generating a second level model comprising second level causal relationships and second level causal weights between the component fault codes and the failure modes;
combining the first level model and the second level model to generate a graphical model; and
determining, using the graphical model, one or more probability inferences.
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Abstract
System fault codes, component fault codes, and failure modes may be received at a system. A first level model comprising first level causal relationships and first level causal weights between the system fault codes and the component fault codes may be generated. A second level model comprising second level causal relationships and second level causal weights between the component fault codes and the failure modes may be generated. The first level model and the second level model may be combined to generate a model such as graphical model. One or more causal probabilities may be determined using the graphical model.
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Citations
20 Claims
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1. A method comprising:
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receiving system fault codes, component fault codes, and failure modes; generating a first level model comprising first level causal relationships and first level causal weights between the system fault codes and the component fault codes; generating a second level model comprising second level causal relationships and second level causal weights between the component fault codes and the failure modes; combining the first level model and the second level model to generate a graphical model; and determining, using the graphical model, one or more probability inferences. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a memory; and a processor to; receive system fault codes, component fault codes, and failure modes; generate a first level model comprising first level causal relationships and first level causal weights between the system fault codes and the component fault codes; generate a second level model comprising second level causal relationships and second level causal weights between the component fault codes and the failure modes; combine the first level model and the second level model to generate a graphical model; and determine, using the graphical model, one or more causal probabilities. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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receiving system diagnostic trouble codes (DTCs), component DTCs, and root causes; determining a first level model comprising first level causal relationships and first level causal weights between system DTCs and component DTCs; determining a second level model comprising second level causal relationships and second level causal weights between component DTCs and root causes; and generating an acyclic graphical model based on the first level model and the second level model. - View Dependent Claims (18, 19, 20)
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Specification