METHOD FOR MULTIPLY CONNECTED CONTROL OF TECHNOLOGICAL PROCESSES WITH PREDICTION Russian patent published in 2024 - IPC G05B13/04 

FIELD: physics.

SUBSTANCE: present invention relates to methods of multiply connected control of technological process with prediction. Present technical solution is used in the field of oil refining, petrochemistry, in particular, it is used in control of processes of rectification, reforming, hydrocracking, hydrotreatment, etc., but can be used in operation with other process systems and processes. When changing one parameter, constructing a forecast of how the change in the input parameters will affect the change in the output parameters, for this, the transient processes models are built, where dependences of each output parameter on each input parameter are given by functions of transient processes in the form of aperiodic dynamic links. Coefficients of these functions are determined in preliminary experiments or from historical data. Set of models of the effect of each input parameter on each output parameter is obtained. For each combination of models, the root-mean-square deviation of the parameters of the models from the reference data is calculated; a combination of values of the output parameters for which the root-mean-square deviation is minimum is found. That is, such a set of control actions (values of input parameters) is found, at which the values of the output parameters of the system are as close as possible to the given indicators. These values of parameters are used by the multiparameter controller for implementation of control actions and maintenance of values of process parameters in the specified ranges.

EFFECT: prevention and reduction of mutual perturbations in various control loops of technological objects during control action, increase in the rate of prediction of the behaviour of technical systems (efficiency) and high accuracy of controlling multi-parameter technological processes; increasing the efficiency of the technological system by maintaining optimal technological parameters.

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