Abstract:
During the implementation of multi-stage production processes, it is necessary to solve the problems of technology management and determine the optimal ranges of changes in the implemented technology factors. The processes under consideration are characterized by the absence of strictly defined functional dependencies between the properties of the products and the technological factors being implemented. A multi-stage production process is characterized by the presence of a set of random variables that affect the processing technology and the characteristics of the products. A cellular hierarchical approach is used to study spatially distributed technological systems that include a set of processing stages. The technology of discrete-argumentative modeling of complex structured processes is being implemented. The processing stages are considered as discrete systems containing a hierarchy of cells. The cells reflect the functioning of certain processing stages, while product quality indicators are often set in the form of permitted ranges. To apply the cellular approach, the ranges of variation of the studied technological factors of each cell are divided into alphabetic elements. The solution of the technology management problem in multi-stage systems is aimed at determining the optimal combinations of output alphabets that meet the requirements of the standards. The conditions taken into account when using the optimal management strategy for the studied processes are reflected. The algorithm of technology management strategy in multi-stage systems is presented. The analysis of technological chains is carried out with the choice of the optimal one, for which the optimality criterion will be the maximum. The technology management strategy under consideration allows monitoring the implementation of selected processing modes and making decisions on their adjustment in case of any deviations. Important elements of the management strategy are changing the quality of raw materials, adjusting the required values of output properties, changing operating modes, and disrupting the technological process. The algorithm of the technology management strategy in multi-stage systems is considered, which allows controlling the technological process and responding in a timely manner to deviations in order to successfully achieve the required results.
Keywords:multi-stage system, process control, process chain, processing modes, deviation, combination of alphabets of inputs and states.
Fulltext:
PDF file (590 kB)