Quality-related fault online monitoring method for efficiently updating model under time-varying system
A quality-related, time-varying system technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as inability to monitor quality-related faults, high computational complexity of model update, and low update efficiency
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[0129] The method proposed by the present invention will be verified below through the data collected in the Tennessee-Eastman (TEP) experiment. TEP is a small-scale industrial process developed by Eastman Chemical Company Downs and Vogel in 1993. The entire process consists of five operating units, including chemical reactors, condensers, compressors, vapor / liquid separators, and separators.
[0130] TEP contains eight components: A, B, C, D, E, F, G and H, where gaseous substances A, C, D and E and inert substance B are reactants, G and H are reaction products, and F is reaction by-products. In the reactor, 4 reactions are carried out simultaneously with the assistance of the catalyst:
[0131]
[0132] Table 1 is 12 control variables (XMV), Table 2 is 41 measurement variables (XMEAS); Table 3 is 15 known faults (IDV). Table 1-Table 3 are as follows:
[0133] Table 1 12 control variables (XMV)
[0134]
[0135] Table 2 41 measurement variables (XMEAS)
[0136] ...
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