Abstract
It is established that an algorithm for parametric methods of pattern recognition can be used to build a classifying rule that allows to identify a section of the duplex-melting process «cupola – electric arc furnace», which has a lower index of parametric reliability. It is shown that in this case it is sufficient to build a linear discriminant function.The resulting classifying rule provides a high recognition rate (91.4 % and 97.1 %) of object belonging to class A (melting in cupola) and class B (melting in electric arc furnace), respectively. This allows it to be recommended for decision support systems for desulphurization and dephosphorization control in the duplex-melting process «cupola – electric arc furnace». The application of this rule opens the possibility of improving the quality of desulphurization and dephosphorization control due to the correct choice of control actions.Additional opportunities for using the above results in industrial conditions are associated with the use of the classifying rule in decision support information systems. It can be implemented by integration of the appropriate mathematical description into the melting information control system (ICS).
Highlights
Considering metallurgical processes as objects of research, it should be noted that by the nature of the description they can be referred to the category of chemical-technological processes
Given the multidimensionality of these objects and their inertia, the main areas of research in this area are focused on the creation of information systems for decision support [1, 2] and focused on the development of mathematical support for such information systems [3, 4]
On the basis of statistical data processing it is established that an algorithm for parametric methods of pattern recognition can be used to build a classifying rule allowing to identify a part of a technological process with a lower
Summary
Considering metallurgical processes as objects of research, it should be noted that by the nature of the description they can be referred to the category of chemical-technological processes The fact that such processes realized in industrial furnaces are described by heterogeneous oxidation-reduction reactions occurring in the «melt-slag-atmosphere» medium speaks in favor of this. The nature of these processes affects the functioning of melting technological systems and predetermines the choice of control actions. The development of this reaction in liquid steel is limited due to the fact that the activity of sulfur in steel is much lower than in cast iron. If in the final product – alloy – the concentration of sulfur and/or phosphorus is higher than the allowable limit, it is necessary to determine which of the series-connected units of the technological system is «responsible» for the resulting reject of the final product
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