scholarly journals FEATURES OF USE OF INFORMATION TECHNOLOGIES AND AUTOMATED CONTROL SYSTEMS AT INDUSTRIAL ENTERPRISES IN MODERN CONDITIONS

Author(s):  
Yuliia Shvets ◽  
Oksana Tyshchenko
Author(s):  
Anatolii Zhuchenko ◽  
Ruslan Osipa ◽  
Liudmyla Osipa ◽  
Lesia Ladieva

In Ukraine, the condition of surface water near industrial enterprises is extremely critical. The operation of enterprises leads to intensive water pollution with industrial and domestic wastewater. Therefore, improving the quality of treatment facilities through the introduction of automated control systems is an urgent problem. For the operation of automated control systems for typical cleaning processes, a software package is required, which is developed on the basis of appropriate algorithmic software and mathematical models of processes. To obtain them, methods of mathematical and simulation modeling and block diagram method of algorithmization were used. In order to assess the quality of the developed algorithm for controlling the process of buffer wastewater neutralization during operation, a comparison of control system operation based on this algorithm with the most successful foreign variants of neutralization control systems was made. Simulation for the average values of operating parameters Q = 75 m3 / h, CP = 75 g / l, and Ck = 2 g / l at minimum b = 0.02 g / l pH and maximum buffer value b = 0.47 g / l pH, and also with  unidirectional extreme combination of parameters Q = 50 m3 / h, CP = 100 g / l, b = 0,02 g / l pH and Q = 100 m3 / h, CP= 50 g / l, for minimum b = 0.02 g / l pH and maximum buffering value  b = 0.47 g / l pH shows that the best quality of transient processes is for the control system operating on the basis of the developed algorithm. For any combination of parameters, the transients for this control system provide better quality transients. Studies have shown that the control system based on the developed algorithm in comparison with the previously proposed systems provides better process control by reducing the time of transients and reducing the dynamic deviation of the output parameters, which improves the quality of wastewater treatment. Given the non-stationary process and high requirements for the cleaning parameters, manual control of this process is beyond the power of even an experienced operator. The developed mathematical model describing the dynamics of the wastewater neutralization reactor with buffer properties and the process control algorithm made it possible to proceed to the development of the control system software, which is necessary for the automated control of this process.


2021 ◽  
Author(s):  
Вадим Георгиевич Ерышов

В статье рассматриваются современные средства и системы защиты автоматизированных систем управления технологическими процессами промышленных предприятий российского производства. The article discusses modern means and systems of protection of automated control systems for technological processes of industrial enterprises of Russian production.


2021 ◽  
Author(s):  
Victoriia Harkava ◽  
◽  
Victor Bandura ◽  
Oleksandr Gaisha ◽  
Tatyana Ihnatova ◽  
...  

The monograph solves a topical scientific and practical problem, which consists in the analysis of modern methods of modeling and development of computer systems and the construction on this basis of automated control systems in the pharmaceutical industry.


Author(s):  
В.А. Туркин ◽  
Д.А. Давыдов ◽  
А.А. Стяжкин

Показано, что в сфере морского транспорта все активнее идет процесс цифровизации. Приведены требования резолюций ИМО и нового руководства РМРС, направленные на снижение уязвимости судов от кибератак. Изложены основные понятия и определения теории анализа риска. В качестве критерия оценки уровня и обеспечения безопасности представлен техногенный риск. Предоставлен анализ эксплуатации плавучих регазификационных установок сжиженного природного газа, основанный на опыте эксплуатации и собранных статистических данных. На основании собранной статистической информации, построена модель «дерево отказов» результирующим событием в которой является утечка газа. Установлено, что результирующее нежелательное событие «Утечка газа» может произойти с частотой 0,4 1/год. Рассмотрена архитектура системы управления судоходной компании, которая опирается на 4 подсистемы: операционных технологий, информационных технологий, промышленных систем управления и систем диспетчерского управления и сбора данных (SCADA). Системы управления позволяют осуществлять дистанционный контроль и управление установками и оборудованием. Недостатком систем является их уязвимость для кибератак. На основании анализа публикаций классификационного общества DNV было выявлено восемь основных уязвимостей в области кибербезопасности плавучей регазификационной установки. Исходя из статистики кибератак на инфраструктуру промышленных предприятий РФ в 2019 г. установлено, что частота кибератак на судовые технические средства примерно составит 0,009 1/год. It is shown that in the field of maritime transport, the digitalization process is increasingly active. The requirements of the IMO resolutions and the new management of the RMRS are given, aimed at reducing the vulnerability of ships from cyber attacks. The basic concepts and definitions of the theory of risk analysis are presented. Technogenic risk is presented as a criterion for assessing the level and ensuring safety. The analysis of the operation of floating regasification plants of liquefied natural gas, based on the operating experience and collected statistical data, is provided. Based on the collected statistical information, a “tree of failures” model has been built, in which the resulting event is a gas leak. It has been established that the resulting undesirable event "Gas Leak" can occur with a frequency of 0.4 1 / year. The architecture of the control system of a shipping company is considered, which is based on 4 subsystems: operational technologies, information technologies, industrial control systems and systems of dispatch control and data collection (SCADA). Control systems allow remote monitoring and control of plants and equipment. The disadvantage of systems is their vulnerability to cyber attacks. Based on the analysis of publications of the classification society DNV, eight major vulnerabilities in the field of cybersecurity of the floating regasification unit were identified. Based on the statistics of cyberattacks on the infrastructure of industrial enterprises of the Russian Federation in 2019, it was established that the frequency of cyberattacks on ship technical equipment will be approximately 0.009 1 / year.


2005 ◽  
Vol 63 (4) ◽  
pp. 295-304
Author(s):  
Ya. E. Lvovich ◽  
A. S. Dubrovin ◽  
E. A. Rogozin ◽  
V. I. Sumin

To obtain reliable data on the properties of liquid metal and create automated control systems, the technological process of molding with crystallization under pressure is studied. A mathematical model of the input and output process parameters is developed. It is established that the compressibility of the melt can represent the main controlled parameter influencing on the physical-mechanical properties of the final products. The obtained castings using this technology are not inferior in their physical and mechanical properties to those produced by forging or stamping.


2016 ◽  
Vol 34 (2) ◽  
pp. 082-097
Author(s):  
Dmitrij Yu. Uchaev ◽  
◽  
Yurij M. Brumshteyn ◽  
Iskandar M. Azhmukhamedov ◽  
Oksana M. Knyazeva ◽  
...  

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