Fault diagnosis method based on switching supervised LDSM
A technology of dynamic system model and fault diagnosis, which is applied in the direction of test/monitoring control system, general control system, control/regulation system, etc., and can solve problems such as no quality variable utilization
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[0057] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation examples.
[0058] The invention discloses an industrial process fault diagnosis method based on a switched supervised linear dynamic system model. The method aims at the problem of industrial process fault diagnosis. The data of various fault conditions are collected and classified into categories. The data includes data of process variables and data of quality variables. Then a supervised linear dynamic system model is established for different working condition categories, and then a switched supervised linear dynamic system model is established. Store the model parameters in the database for later use. When monitoring and diagnosing new online data, first use the new Gaussian and filtering method to obtain the posterior probability of the data under various working conditions, and then obtain the fault diagnosis results.
[0059] The m...
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