The article describes the development of a virtual emulator of the polyvinyl chloride drying process. The development of the emulator is implemented using the Omegaland development environment. The characteristics and functional structure of the polyvinyl chloride drying process in a fluidized bed dryer are presented. Mathematical models of elements of simulated system are considered, algorithm of their operation is characterized. The steps of developing a virtual polyvinyl chloride drying simulator are described. The flowchart is assembled in the OmegaLand Visual Modeler modeling environment. The fluidized bed dryer module was developed in the integrated development environment of Microsoft Visual Studio in the C++ programming language. The developed dryer model was integrated into the Omegaland library. The developed dryer model was tested in the emulation mode of the polyvinyl chloride drying process.

Keywords: mathematical model, drying, polyvinyl chloride, Omegaland, emulator, virtual simulator, fluidized bed dryer

The results of the development of a software package are presented that allow training personnel to work in a district heating system to ensure a reliable process of energy transportation in heat networks. The developed simulator described in the article is a software package that includes a SCADA system and a Termas client for modeling and simulation operation of the district heating system. The simulator consists of a thermal-hydraulic mathematical model of the operating modes of the heating network, software and information support for setting up the operating modes of the simulator and assessing the actions of the personnel by the instructor based on the results of work on the simulator. The requirements for the functionality of the simulator are presented. The Demand Analysis application was used to collect data on energy consumption and outdoor temperature. The process of operation of the simulator in the simulation and modeling mode for the heat networks of the city of Yekaterinburg is presented. The developed software simulator makes it possible to simulate an accident, train personnel in the skills of safe equipment control in complex non-stationary modes. The software package allows you to reduce energy costs.

Keywords: training simulator, software, district heating, heating networks, SCADA system, Termis platform, model, temperature, accident

The article discusses one of the approaches to the management of the ore grinding circuit, in particular, the process of loading the ore mill. For maximum performance, the mill must be loaded 47-50%, there are several ways to measure the mill load level. In this paper, we consider one of the methods of measuring the level of loading of the mill, in order to control the loading of the mill. The article investigates the prospect of using an extreme controller in conjunction with the observer States in the implementation of the control circuits mill loading. The resulting control system produces load control based on the current drive power of the mill. The peculiarity of this control system is that it is able not only to control the mill, but also to recognize the overload and take measures to prevent an emergency. There is no need for additional subsystems and algorithms. In addition, two models of management systems were developed and their effectiveness was compared. The advantages of using the state observer with respect to the classical extreme regulator are indicated.

Keywords: ball mill, automating, mathematical model, control loop, observer state, extreme controller

The article presents the dependence of the change in the intensity of emission during the passage of an infrared flux through a two-component material, which allows for a fractional assessment of a mixture of natural and chemical fibers. On the basis of the obtained dependence on experimental data, a mathematical model has been constructed that makes it possible to quantify the distribution of dissimilar fibers in a mixture. The modelling results showed that after the second transition on the draw frame, the so-called "stretching" defect is observed, which characterizes the uneven distribution of fibers in the product cross section.

Keywords: emission intensity, infrared evaluation method, mixing of dissimilar fibers, fractional composition, measuring device

At present time, there are attempts to design and produce forest machines of highly-demanded classes in Russia. The paper evaluates the efficiency of forest machines under identical operating conditions. The analysis showed the possibility of using harvesters and forwarders of joint Belarusian and domestic production for logging works as an alternative to foreign forest machines. Evaluation of proposals revealed advanced Russian and Chinese models of forest machines. The research showed that in our country there are prerequisites for the development of forestry machine-building, while the main problem is the lack of production technologies for the manufacture of modern technological equipment and components. Under these conditions, the evolution of production on the national territory of forest machines and technological equipment without involving domestic or foreign capital and innovative technologies is a difficult task.

Keywords: domestic forest machine building, development prospects, forest machines, production

The article outlines the features of the developed algorithm for controlling autonomous industrial forest management facilities under real operating conditions under the forest canopy. A significant challenge faced by the developers in the presented algorithm was the practical absence of global navigation in the areas of use of potential autonomous industrial forest management objects. Thus the only alternative was local positioning algorithms, which of the existing ones were also unserviceable under real forest canopy conditions. The problem was exacerbated by the high requirements for positioning accuracy not so much for autonomous objects as for positioning accuracy relative to the object of work of the contact elements of technological equipment directly implementing the operations of the industrial timber harvesting process. The developed concept of local positioning has no analogues in the world, belongs to the algorithms of the latest generation, created by the authors on the basis of mathematical modelling of the operations of industrial forestry process and implemented in registered software complexes to manage the information flows that ensure the sustainable functioning of autonomous objects of industrial forestry in real operating conditions.

Keywords: algorithm, method, synthesis, positioning technology, control method, digital model, automation, digitalisation, modelling

This paper proposes an accurate and dynamic method for diagnosing of crop diseases. This method adopts Bayesian networks to represent the relationships among the symptoms and crop diseases. This method has one main difference from the existing diagnosis methods - it does not use all the symptoms in the diagnosis, but purposively selects a subset of symptoms which are the most relevant to diagnosis; the active symptom selection is based on the concept of a Markov blanket in a Bayesian network. Theoretical analysis demonstrates that the proposed method can significantly enhance the performance of crop disease diagnosis.

Keywords: plant disease recognition, mathematical model, Bayesian network, machine learning, Markov blanket

Cast iron occupies one of the most important places among structural materials and is widely used in the manufacture of critical automotive parts.The article examines the possibility of processing gray cast iron by surface plastic deformation (SPD) and the study of its hardening depth in order to control the stress-strain state (SSS) of the surfaces of parts. Modeling is carried out, calculations are close to the real situation, a three-dimensional finite element model is used. The data obtained were analyzed by the least squares method (LSM), graphs were plotted.Also, based on the data obtained, it was found that the relationship between the degree of plastic deformation, the diameter of the indenter and the depth of work hardening is an equation that describes the surface. The carried out researches and the received dependence allow to increase the accuracy of forecasting of results of processing of PPD cast iron.

Keywords: grey iron,plastic deformation, bilinear deformation diagram, indentation depth, spherical indenter

Electronics is the most capacious and rapidly developing industry in our country. Modern methods of designing electronic devices are unthinkable without the use of computer technology, in particular, specialized programs for computer analysis and modeling of circuit diagrams of the devices being developed. Intelligence is the key link in electronics at the present stage of its development. This is due to the emergence and widespread adoption of microcircuits such as microcontrollers. This aspect provides fundamentally new opportunities for solving a wide variety of tasks, including tasks of a strategic orientation that require prompt solutions. All this became possible primarily because devices based on a microcontroller require algorithmic and further software, which makes it possible to create intelligent systems and devices. One such device will be discussed in this article. The developed device is a system consisting directly of a control system, an actuating device, which is a decision-making device, a power unit and peripheral devices. The article explains the idea, the principle of operation of the developed device, the structural and schematic diagrams of the developed main blocks of the device, as well as their algorithmic support, which is based on the principle of intelligent control. The developed device is designed to automatically maintain the level of illumination at the level set by the operator in the premises of industrial enterprises.

Keywords: intelligent control, sensor unit, binary code, synchronization circuit, transistor switch, bus driver, optosimistor, control system, actuator, power unit

The article is devoted to the research and development of an automated control system for the technological process of obtaining E. coli. E. coli belongs to gram-negative rod-shaped bacteria of the Enterobacteriaceae family of facultative anaerobes. It is the most famous microbe in the world and has different types of strains. Commensal E.coli are harmless and often found in nature. Currently, great attention is paid to the use of modified E.coli for the production of recombinant proteins, amino acids. The results of mathematical modeling of the automated system are presented. The simulation was performed using SimInTech and MathCAD software tools. The object of management is the cultivation capacity. The temperature of the Escherichia coli is accepted as a regulated technological parameter, which is controlled by changing the degree of valve opening. The method of passive experiment was used to build an automated control system. The main parameters of the control object are obtained.

Keywords: automated control system, technological process, E. coli, mathematical modeling, control object, transfer function, control parameters

3D integration technologies based on highly integrated substrates and bare chips solve the problem of miniaturization of complex functional devices. However, increasing complexity and decreasing mass-size parameters of products lead to problems of effective heat distribution and dissipation from frameless microcircuits. The article considers features and problems of thermal analysis of 3D computing microsystem based on several modules with bare-metal chips, and also shows the importance of modeling the actual heat generation of programmable logic integrated circuits.

Keywords: microassembly, microsystem, chipless chip, FPGA, thermal analysis, CAD, finite element method, heat transfer simulation, printed circuit board, three-dimensional integration

To date, the issue of industrial development of the Northern territories of Russia is being actualize. The main task is the production of concrete works that require the use of special methods. The purpose of the current article is to justify the need to develop a software solution that allows you to automate the calculation of the pa-rameters of the heating wire during winter concreting. The author raises the ques-tion of the relevance of using the method of winter concreting on the example of heating wires. The paper analyzes aspects of the design of this program. The scien-tific significance of the article lies in the possibility of using the presented materials as a basis for creating a real software solution. The predominant part of the article is devoted specifically to the issues of creating a solution for automating the calcu-lation of heating wire parameters during winter concreting.

Keywords: construction, program, automation, heating wire, winter concreting, the Far North

Abstract: This article discusses the prospects and problems of the development of digital technologies in the construction industry of the Russian Federation. The work presents the main legislative acts and federal projects aimed at the digitalization of construction in the country, the features of the introduction of digital technologies at all stages of the life cycle of capital construction projects, including: building information modeling (BIM), their digital twins (Digital Twin), the Internet of things ( IoT), with the help of which a single information space is created that allows collecting, systematizing all the received data, on the basis of which management is carried out at various stages of the life cycle.

Keywords: digital transformation, construction, building life cycle, BIM technologies, Digital Twin

The paper describes the development of a system for indoor microclimate parameters monitoring. The developed system includes a hardware part implemented on the basis of the Arduino UNO platform, and a software part consisting of a server and a client application. The DHT11 temperature and humidity sensor was connected to the Arduino UNO board. Ethernet Shield expansion card was used to transmit the collected values over the network. The server part of the developed system includes program code in the PHP programming language and a database. The client application is implemented in the Python programming language and Qt framework. The developed monitoring system has been tested. It was found that the accuracy of readings and delays in the operation of the system are within acceptable limits for the problem under consideration.

Keywords: microclimate, temperature, humidity, Arduino, Ethernet, Python, PHP, QT, Apache, MySQL, database

Reducing the risk of human-made disasters is directly related to the trouble-free operation of nuclear power plants. Analysts name the human factor like a one of the causes of accidents at the nuclear power plants, which mainly determines both the probability of their occurrence and the consequences. Minimizing of the human factor impact suggests a number of actions, including automation and digitalization, the applying of which on the plant is impossible without of mathematical models of technological processes. A simulation model of a digital automatic control system (SAR) of pressure in a pressure compensator used to maintain pressure in the first circuit of the nuclear power plant is presented in this article. As a result of modeling are the charts of transition process which are used for calculating of the digital ACS quality indicators. The ACS simulation model is implemented in a classical way, but in practice such classical regulators do not provide the predefined quality indicators. In this connection, a model of adaptive ACS with a neuroregulator is proposed to improve the qualitative characteristics of the system.

Keywords: nuclear power plant, reactor, compensator, pressure, temperature, perturbation, regulator, valve, gate valve, turbine, model, circuit, neural network, optimization.

The article considers aspects of industrial forest management based on automation of control of local positioning, engineering and information technology of unmanned industry. Original algorithms for automatic control of unmanned technical systems and contact elements of technological equipment under the forest canopy, directly implementing the operations of the technological process, have been created and tested. Software complexes for data collection and control of information flows, providing stable functioning of the last generation local positioning means, have been developed and registered. The designs, methods and architecture of unmanned ground, suspended and airborne systems for industrial forest management, forest maintenance, located in specially protected natural areas and industries indirectly related to forest or forest land have been proposed.

Keywords: automation, digitalisation, method, algorithm, synthesis, technology, positioning, control method, digital model, modelling

The guarantee of ensuring the safety of people and material assets in the event of a fire requires a careful approach to the design and installation of smoke ventilation. In order to evacuate people from the smoke zone in a timely manner, technical devices with a normalized limit of resistance to fire are installed – smoke valves. To determine the distribution of the pressure of the air flow in the smoke control valve over its cross-sectional area, the method of mathematical modeling is used. With the help of a mathematical model, visual modeling of the distribution of the gas-air mixture flow is carried out, a detailed analysis of hazardous factors is carried out, an assessment of the possible temperature and time of flame propagation, determination of the probable degree of smoke in the interior space and the ways of smoke movement.

Keywords: smoke, fire, ventilation system, smoke protection, smoke valve, mathematical model

The problem of controlling stepper motors of a road printer using the method of neuro-fuzzy control is considered. An algorithm for developing an intelligent control system for stepper motors is described. A training sample is obtained according to the data of variables determined as a result of modeling an automatic control system with a continuous proportional-integral-differentiating (PID) regulator. Training of the adaptive neuro-fuzzy output system by the hybrid method was performed using the MATLAB program. Transient characteristics of the control system with continuous and neuro-fuzzy PID regulators have been built. Direct indicators of the quality of the considered control systems of stepper motors have been determined, and an analysis of these results has been carried out. The use of neuro-fuzzy-PID control of stepper motors made it possible to obtain a high-quality transient process, confirmed as a result of a computational experiment.

Keywords: Road printer, stepper motor, travel printer, stepper motor, transfer function, adaptive neuro-fuzzy output system

The article presents the results of evaluation of photobiological efficiency of technological LED lighting in growing cucumber plants Svyatogor F1 variety under light culture conditions. In the experiment phyto-irradiators (FI) with high-pressure sodium lamps of DNAT type (control variant), as well as LED FI of combined spectrum were used. On the basis of photobiological experiments it was found that the emission of OP2 (where radiation with  = 730 nm was 3.1 times more and radiation with  = 660 nm 1.23 times less than in the emission spectrum of OP3) was more effective, providing not only better quality of cucumber seedlings but also higher productivity. The practical significance of the obtained results is shown.

Keywords: phyto-irradiator, LED light source, light-culture, photobiological research, radiation spectrum, photosynthetically active radiation, photosynthetic photon irradiation, cucumber plant

The features of the mathematical, algorithmic and software of the developed simulator-training system (STS) for the control of visual modeling skills in the preparation of students in areas of automation, informatization, robotization are considered. The use of STS allows you to automatically generate individual options for practical tasks for the development and analysis of visual models, automatically evaluate the correctness of the tasks performed by students, form advising influences for the student (remarks and recommendations for a better understanding of the topic under study). The use of STS in the process of monitoring the initial skills of visual modeling in students will: reduce the need for manual compilation of a large number of options for tasks by the teacher and subsequent verification of the results of their implementation; improve the quality of education, taking into account the specifics of the areas of student training under consideration.

Keywords: information systems in education, training system, automated control of knowledge and skills, visual modeling, unified modeling language (UML)

The article presents the results of a full-factor experiment and analyzesthe impact of various factors, such as the number of transitions a tape machine, the characteristics of an infrared laser diode and a the humidity of the material on the magnitude of the signal response when infrared radiation passes through the tape.

Keywords: fiber mixing quality, infrared estimation method, planning matrix, regression equation, model adequacy

International transport-logistics corridors represent the most optimal routes in terms of structure and direction for the spatial movement of goods by various modes of transport. The routes of international transport-logistics corridors pass through the most rational directions. International transport-logistics corridors are the result of integration of the transport systems of neighboring countries into a common single common route. They pursue the goal of ensuring sustainable and reliable transportation of goods both between the countries participating in international transport and logistics corridors, and in the direction of other countries. This ensures the economic efficiency of joint transportation of goods. Therefore, international transport -logistics corridors perform an important transit function, ensuring the passage of large trade and logistics flows. In order to systematize various types of international transport and logistics corridors, their typology is being carried out. The authors of this article consider various types of international transport-logistics corridors, identified according to the most important criteria. According to the purposes of creation and the economic functions performed, transit, developing and trade international transport and logistics corridors were identified. According to the type of communication carried out, the corridors are represented by various types of land, water and air transport. On a spatial basis, trans-European, pan-European corridors, trans-Asian and North American corridors are distinguished. According to the type of transportation, corridors are classified into freight, passenger and cargo-passenger. Depending on the ratio of the parties involved, the corridors are two-sided, unequal and one-sided.

Keywords: international transport-logistics corridors, transportation, typology, typological approach, transport and logistics flow, cargo transportation, international transportation, transport systems

The given review of hygrothermal processes in the processing of grain crops, their features is presented from the standpoint of nanotechnology. It is shown that for the developed nanotechnologies in the production of agricultural products, it is necessary to apply non-traditional methods of process research, which is the method of similarity of the functioning of technical systems (SFTS). This method will allow for the processes of humidification, drying, wet-heat treatment in vacuum conditions to obtain generalized similarity criteria, determine their numerical values and obtain generalized criterion dependences of the intensity of the processes under consideration on the processing parameters. The implementation of the method will allow us to quantitatively describe the processes of hygrothermal grain processing in vacuum conditions, assign processing parameters and manage them. Mathematical models of hygrothermal processes have been developed based on the method of similarity of the functioning of technical systems depending on the parameters of the medium and the structure of capillary-porous grain shells.

Keywords: hydrothermal effects, grain crops, vacuum, nanotechnology, humidification, drying, wet-heat treatment, capillary-porous materials, microcapillary, the criterion of sublbiya, the method of similarity of the functioning of technical systems

This article describes the results of research on the possibility of detecting sunflower plants from photographs taken by a UAV. The solution to this problem will allow automated control of an important agricultural parameter - seedling density. The problem is complicated by the limited amount of training sample and "disturbances" associated with field weeding. As the result we obtain that the YOLOv5m neural network is capable on a sample of 122 pictures to qualitatively detect plants with an error of 0.077% of training. Artificially increasing the sample to 363 pictures reduces the learning error to 0.063%. Disturbances reduce the detection efficiency of sunflower plants in the test images. It is possible to increase the detection efficiency either by adding original images to the training sample or by artificially enlarging the sample.

Keywords: detection, YOLOv5, sunflower, seedling density, neural network

The article is devoted to the actual problem of automating the life support processes of the system “intelligent building”, through the introduction of telemetry modules, in order to comply with the requirements of high-quality supervision, control and precautionary measures, in particular, in the areas of maintenance of water networks, responsibility for the operation of engineering networks and facilities between suppliers and consumers, ensuring water quality analysis. An analysis of the automated dispatching control and management system (on the example a water intake unit) shows that a lot of works (both Russian and foreign researchers) are devoted to the issues of control and distribution of water supply in the city, but narrowing the object of study to a complex of an automated sodium hypochlorite dosing system, the possibility of its optimization, taking into account the specific states of the system. The formulas given in the work for calculating the working dose and the amount of active chlorine, well as the number of strokes the dispenser pumps and the formulas for determining the actual working dose of the disinfection process, open up the possibility of clearly monitoring the actual dose and adjusting it, analyzing in detail the main parameters of the disinfection system. At the same time, the automatic control of the complex is carried out by a controller and PC, and the relevance lies in the use of telemetry control modules for organizing uninterrupted, remote operation of the dispatch service. Thanks to telemetric means of dispatching control and management of the state of water supply facilities, the process reaches a new qualitative level. The functionality of the water intake unit is expanding due to the introduction of telemetry and telecontrol system in the form of separate technological modules. The developed modules (through spatial and time series models) provide the performance of additional functions, such as: water quality control (residual chlorine, accounting for a number of random pollution factors), support for the route technology of the dispatching system, remote control of actuators with the possibility of automatic control, self-diagnostics of the software and hardware complex, as well as planning preventive measures. repair and restoration works of engineering systems. As a result of operational monitoring of water quality (using a telemetry module), optimal ratios of chlorine entering the water are automatically provided in the chlorination room. At the same time, the author convincingly proves that the use of the proposed method for monitoring and transmitting data makes it possible to perform continuous remote diagnostics (of communication channels, the performance of all systems) and, importantly, there is no need to send specialists directly to the object each time (parameterization and calibration of devices is carried out remotely). Quick setting of limit levels and modes of operation allows you to flexibly control the production process, reconfigure it according to changing tasks and re-equip it (if necessary).

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production