Certain aspects concerning the development of a functioning scheme of the auto-mated system to control energy flows of underground iron-ore enterprises

Abstract

Purpose is to develop a functioning scheme of ACS for energy flows in terms of invariability of electric power consumption as well as inversion of energy flows of mining enterprises in the current time of day to decrease power cost segment in the context of еру prime cost of iron ore raw materials (IORM) extraction. Methods. Data of a passive experiment have been applied to obtain operational statistics of iron-ore mines. Then fuzzy logic has been applied to identify linguistic terms on the required technological parameters; and procedures of fuzzification, logical derivation and defuzzification have been performed. Principles to form basis of fuzzy rules have been determined to enable decision-making automation using Mamdani method. As a result, fuzzy controllers have been synthesized; and their performance has been modeled in the environment of a software package MatLab. The basic modeling results have been visualized using MS Excel. Findings. System of control criteria system has been substantiated; and vectors of an object condition vector, the basic information parameters, controlling influence and disturbances have been defined. Approaches to optimize power consumption process basing upon еру minimax functionals, use of restriction system, and calculation of rational settings have been analyzed. Algorithms of the automated control have been developed using several strategies and criteria. Implementation principles of the algorithm have been proposed on the basis of fuzzy logic use. Originality. Efficiency of fuzzy systems to control energy flows of mines has been proved under the conditions of one- and multi-channel regulating process. The basic analytical indices have been obtained supporting unambiguously both sufficient quality and efficiency of the automated control systems to be used for underground mining of iron ore. Practical implications. Structural patterns and means of practical implementation of fuzzy controllers have been proposed for industrial environment application. Calculations have proved that the approaches will help implement the automated control of energy consumption by a mine in real time, and optimize expenditures connected with the consumed electric energy.