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

The problem of synthesizing the parameters of the drive control system of the responsible unit of the construction 3D printer - the screw dispenser of the print head using the method of neuro-fuzzy control is considered. An algorithm for building an intelligent drive control system is described. A training sample is obtained from the data of variables determined as a result of modeling the automatic system control with a continuous proportional-integral-differentiating (PID) regulator. Training of a neuro-fuzzy output system in the MATLAB software environment is performed using the hybrid method a. Transient characteristics of the control system with continuous and neuro-fuzzy proportional-differentiating (PD) regulator are obtained. Direct indicators of the quality of the considered control systems are determined, and an analysis of these results is carried out. The use of neuro-fuzzy control of the screw doser drive of the 3D printer print head made it possible to obtain the desired a transient process confirmed as a result of a computational experiment.

Keywords: 3D printer, screw dispenser drive, print head, concrete mix, transfer function, proportional-integral-differentiating controller, neuro-fuzzy output system

This article describes the principle of operation of an unmanned vehicle. The cargo "car of the future", which will guarantee the safety, timeliness of the workflow, be based on automatic control without the participation of the "human factor" and optimize labor resources. The manufacturers' market is making every technical and financial effort to implement this type of car, most companies have already launched test versions of equipment in order to "keep up with the times". In order to have a complete picture of the available capacities and assess the development in this segment of technological progress, an analysis of unmanned trucks of the foreign market is presented. But taking into account the difference in the scale of the territory, terrain and weather conditions makes it clear that Russian production should take as a basis other distinctive features when developing this type of transport. The Russian experience of the introduction of an unmanned truck in harsh climatic conditions in the fields is also studied and the further path of drones on Russian roads is considered.

Keywords: transport, unmanned vehicle, drone, unmanned trucks, the future

Pipe fittings, which are one of the main elements of any type of pipeline networks, can be used for various purposes: shut-off, reverse, safety, control, separating, shutting off, etc. In order to control the performance of this element, it is necessary to carry out various tests in the prescribed manner, the main ones being pneumatic. This study is devoted to the development of equipment for in-plant pneumatic testing of rotary check valves for pipeline systems of hazardous production facilities with ultra-high parameters of the working environment. For this design of the installation, the simulation of the stress-strain state of the elements of the installation was carried out, as well as the gas-dynamic calculation of the test circuit of the installation.

Keywords: rotary check valve, pipeline fittings, pipeline system, mathematical modeling, finite element method, strength analysis, stress-strain state, computational fluid dynamics, pneumatic testing, technological pneumatic installation

The article provides a brief analysis of the processes that occur when starting an electric motor. Mathematical relations modeling the process of starting a direct current motor are presented. Graphical dependences allowing to determine parameters of a thermistor providing an optimum start-up of a direct current machine have been obtained.

Keywords: starting current, thermistor, starting rheostat, thermal characteristic, DC motor, boundary conditions, torque resistance, idealized rheostat, heat loss, economical starting

The article gives a brief analysis of thermal processes occurring during the start-up of an electric motor. Mathematical relations modeling the distribution of thermal energy in the thermistor during the process of starting the DC motor are presented. Graphic dependences are presented, which allow to make arrangement of thermoresistors for the starting rheostat and to determine parameters of the starting rheostat obtained in this way. Application of the starting rheostat made on the basis of thermistors, provide an optimal starting of a DC motor.

Keywords: control gears, thermistor, starting rheostat, DC motor, temperature, dynamic characteristic, form of starting current

Location of compensating devices is determined by various factors: configuration of power supply system, enterprise load schedule, type and length of power lines, parameters of capacitor banks, value of supply voltage. We consider the influence of the above factors on the creation of a mathematical model to determine the location of compensating devices, taking into account the minimum economic costs.

Keywords: compensating devices, reactive power compensation, power system, power grids of industrial enterprises, load schedule, mathematical model, reduced costs

The article discusses the production and use of environmentally friendly fuel - pellets. A review of the designs of mobile pellet production plants was carried out, the advantages and disadvantages of these designs were identified. Potential consumers of pellets and equipment (heating boilers for which pellets are the fuel) are considered. A mobile complex for the production of pellets on the chassis of the MSN-10-004-03 . The technology of pellet production using a mobile mobile installation is described.

Keywords: pellets, mobile plant, design, biofuels, production technology

Pipeline networks today are the main and one of the safest ways to transport all kinds of media. This engineering system consists of various elements, one of which is pipeline fittings that regulate the parameters of working media and protect pipelines from overpressure. In order to control the operability of pipeline fittings, it must be subjected to comprehensive tests, one of which is a leak test. The presented study describes the developed design of a technological hydraulic installation intended for use as part of process equipment for conducting in-plant testing of pipeline valves. The results of modeling the stress-strain states of the main units, as well as the hydraulic calculation of the test circuit of the installation are presented.

Keywords: rotary check valve, pipeline fittings, pipeline system, mathematical modeling, finite element method, strength analysis, stress-strain state, computational fluid dynamics, hydraulic tests, technological hydraulic installation