National University of Science and Technology MISiS, Almalyk, Republic of Uzbekistan:

B. M. Temerbekova, Head of the Department of Process and Production Automation, PhD (Technical Sciences), e-mail: misis_temerbekova@mail.ru

This paper uses the Lagrange multiplier method to substantiate the general solution for validity control problem in terms of independently measured parameters of material flows. The paper shows that the efficiency of the above method can be raised if certain process parameters are measured in a number of independent ways by a dispatcher control system. A technique is described to adjust the initial measurement signals in case some channels have redundant information. Such technique is applicable if the values to be adjusted are identified over a period of time that greatly exceeds the dynamic memory of the object or if the dynamic links between certain channels are completely compensated and the execution of static equations of the studied processes is a prerequisite for the values to be adjusted. A method for systematic error detection in application to aggregate integral uncorrelated measurements was used as part of the NavoiAzot dispatcher control system for adjustment of per-shift and per-day performance indicators as calculated by the system. The paper considers the problem of selecting and retrieving valid data on the basis of redundant measurements of material flows and flow constraint equations. The paper describes a solution for the problem of selecting and retrieving valid data on the basis of redundant measurements of material flows and flow constraint equations in application to a complex fertilizer production monitoring system.

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