Gas chromatograph fault diagnosis method based on Bayesian network
A technology of gas chromatograph and Bayesian network, which is applied in the field of fault diagnosis of gas chromatograph based on Bayesian network, can solve problems such as excessive differences, serious consequences caused by analysis, control, and decision-making, and achieve accurate location of faults Effect
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[0061] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0062] The invention provides a kind of gas chromatograph fault diagnosis method based on Bayesian network, comprising the following steps:
[0063] (1) Divide the maintenance records of gas chromatographs with working hours in the same year into one group;
[0064] (2) Analyze the faults and symptoms of each group, and determine the Bayesian network structure of each group;
[0065] (3) Determine the overall Bayesian network structure;
[0066] (4) Classify the symptoms according to the possibility of occurrence and severity;
[0067] (5) count the frequency of each group of fault symptoms, and determine each group of Bayesian network parameters;
[0068] (6) Determine the overall Bayesian network parameters;
[0069] (7) When a fault occurs, calculate the posterior probability of the fault and locate the fault.
[0070] The maintenance ...
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