bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling a stressed-deformed state of a technological pipeline with a displacement of edges
Authors: Rubtsov A V , Kulakov P A , Mukhametzyanov Z R , Farshatov A R , Bayazitov M I , Kovshova Yu S , Gimaltdinov I K 
Published: November 2020

Abstract
During installation or repair of pipeline routes, a deviation such as a displacement of the edges of the docking elements, which is formed due to a certain mistake in preparation for welding and welding of the section, is possible. The permissible values of the displacing edges are regulated by the state standard and other regulatory and technical documentation in the field of design, installation, operation and repair of process pipelines. When identifying displacement sizes not exceeding the permissible limits, the pipeline is allowed further operation. In the future, to ensure reliable operation of the pipeline, a periodic assessment of its technical condition is carried out according to current standards. However, even the allowable displacement of the edges is a kind of stress concentrator and can be a source of crack nucleation and further destruction, which will lead to an emergency. Current methods for diagnosing and extending the life of pipelines do not include measures to assess the maximum stresses of welded joints with offsets. There is no analysis of how the displacement of the edges in certain areas affects the stress-deformed state of the entire pipeline as a whole, and what impact do co-locate technical devices have with possible geometric deviations during installation, for example, deviations from verticality. In this paper, we study the interconnection between the effects of technologically neighboring apparatuses and deviations from verticality formed during installation, as well as areas of displacement of the edges of the processing pipeline to the stress-deformed state of the pipeline as a whole.
Hierarchical approach to artificial intelligence
Authors: Zhigalov K , Avetisyan K , Konyukhov V Y , Osmaev A D 
Published: November 2020

Abstract
There are three promising directions of artificial intelligence in the 21st century: focused solutions, i.e. solutions used only in a specific field; artificial intelligence of the general direction – a neural computer capable of performing any intellectual action typical for a man or a society and development of artificial superintelligence with scientific creativity, wisdom and communication skills. This paper is aimed at considering a hierarchical approach to the application of artificial intelligence. It is assumed that the hierarchical approach will allow more accurately choosing the required type of solution when dealing with any automation task.
Use of HTTP filtering devices in automated control systems based on the technology of the Industrial Internet of Things
Authors: Budnikov K I , Serdyukov O V , Kurochkin AV , Nestulya RV 
Published: November 2020

Abstract
The use of the Industrial Internet of Things (IIoT) technology helps to increase the efficiency of the enterprise and reduce production costs. IIoT devices send large amounts of data that tied directly to production and related factors to a cloud storage. In addition, IIoT devices are used by engineering personnel through wireless devices. One of the protocols for interacting with IIoT devices is HTTP using embedded web servers. Establishing a secure HTTPS protocol connection is not always possible or justified due to its resource consumption. In this situation, to increase security, it is appropriate to apply an additional HTTP filter to regulate the access of mobile devices being used by engineering personnel to access to IIoT devices, as well as to certain features that specific devices provide over HTTP. The paper discusses HTTP filtering devices on Gridex-II hardware platform of the industrial type. The results of their bench tests with standard and improved filtering algorithms are presented.
Towards the species of the auto relock schemes of the high-frequency feedback loops of the stabilization systems
Authors: Gurov M G , Gurova E G 
Published: November 2020

Abstract
In this paper, we discuss existing and propose new schemes of the feedback auto relock. These schemes provide a closing loop of the logic sequence: keeping stabilization point - automatic search of the stabilization ranges and lock points. The addition correctors to update old and to create new feedbacks schemes were proposed. These correctors allow extended or potentially infinite operation time, for correction signals.
Theory and practice of positioning a solar panel to obtain peak power points at weather stations
Authors: Kochmarev K O , Malozyomov B V , Kuznetsova Svetlana Yurievna , Ignatev I V 
Published: November 2020

Abstract
This paper discusses various methods for positioning solar panels in space for autonomous power supply of weather station equipment. The principles of operation of these methods are described; their advantages and disadvantages are indicated. An effective positioning calculation was also made for one of them. The basic conditions under which one or another method is worthwhile are identified. It is determined that depending on the territorial location and environmental conditions, various positioning methods can be selected.
Analysis of the mathematical modelling results of displacements and deformations induced by the construction of the escalator tunnel of "Mining Institute” station in Saint Petersburg
Authors: Novozhenin S U , Vystrchil M G , Bogdanova K A 
Published: November 2020

Abstract
The article presents the results of mathematical modelling of geomechanical processes that occur during the construction of an escalator tunnel using EPB TBM at the «Mining Institute» station in Saint Petersburg. A numerical model was built using the finite element method implemented in «Plaxis 3D» software. Hardening soil model was used for modelling of soil massif. The analysis of the distribution of displacements and deformations in the main cross-sections of the displacement trough is performed. Issues of assessing the harmful effects of underground construction on undermined buildings and structures are considered. Based on the research, we can conclude that the construction of a tunnel is safe for undermined buildings with strict tunnelling technologies compliance.
Development of autonomous traction system of electric vehicle with electronic differential and fuzzy control system
Authors: Popov N S , Anosov V N , Vilberger M E , Domakhin E A , Anibroev V I , Singizin I I 
Published: November 2020

Abstract
The article discusses the optimal layout of an autonomous vehicle traction system. In modern society, a special place is occupied by environmental issues. From year to year, a huge amount of statistics is published that reflect the scale of the damage that human products cause to the environment. Today, the main “pest” on the planet is surely cars with an internal combustion engine. At the same time, a complete rejection of motor transport, both in Russia and in the world, is impossible, because the life of modern man is inextricably linked with the constant movements, which are not always possible through urban electric transport. In recent years, many manufacturers of transport systems see the way out in autonomous electric transport systems development, which, in the future, will be able to replace vehicles with an internal combustion engine. In this article traction system variants, choice of electric motor optimal location, and also the control systems analysis which would correspond to requirements to the given technical process are considered.
Justification for the parameters of extraction panels under the conditions of increased water inflows using computer models of rock mass
Authors: Sidorenko A A , Belova D V , Sirenko Y G 
Published: November 2020

Abstract
The purpose of the research is to increase the efficiency of underground mining of flat coal-bearing seams with powered longwalls in the areas characterized by complex hypsometry and high water inflows. The modern global trend to increase the size of extraction panel (the length of longwall and the length of column) during the development of flat coal-bearing seams is shown. The results of the development of a three-dimensional model of the array are presented, which allows building profiles of the earth surface and the developed seams in the areas with complex hypsometry. The applicability of the use of such models to determine the rational place for the formation of dismantling chamber is shown. The interrelation between the length of longwall and the length of extraction panel during the mining thick coal-bearing seams is shown. The assessment of the additional costs and damages caused by the division of the extraction panels into two parts is carried out to ensure an upward order of mining reserves under the conditions of increased water inflows. The field of rational application of the division of extraction panel into two parts for the conditions of the mine site named after V.D.Yalevsky is determined.
Robot technological system of analysis of cybersecurity information systems and communication networks
Authors: Maksimova E A , Sadovnikova N P , Baranov V V , Gromov Yu Yu , Lauta O S , Tret’yakova L V 
Published: November 2020

Abstract
The article presents the authors’ views on the organization of the modern system of cybersecurity. We considered the tasks, assigned to the monitoring subsystem and reconnaissance of cyberspace as a source of preventive hardware and software effects on the opposing side. The shortcomings of the existing structures of such subsystems are analyzed and the requirements to the intelligent automated system of cybersecurity are specified. The article offers hardware and software solutions, based on the development of a mobile robotic system for audit the stability of the network infrastructure and applications to existing and future cyber threats. A variant of the functional scheme of a robotic system with a universal housing is presented and with a set of mechanical drives, depending on the characteristics of the problems to be solved. For providing high functional flexibility and speed of the robotic system it is proposed to use fuzzy neural networks. The union of two independent theories - neural networks and fuzzy logic - allowed creating neural-fuzzy systems, having a high level of intelligence and independence in decision-making. The advantage of hybrid neural-fuzzy technology of modeling and information processing is the ability to view the generated rules and giving them a meaningful linguistic interpretation. A reasonable conclusion is made, that is the main meaning of that is the main meaning of the shift of creation concepts and using of artificial intelligence - transition from individual systems to distributed information processing and the development of multi-agent intelligent systems.
Speed regulation in vector control systems of synchronous motor drive
Authors: Matiukhova E S , Kucher E S 
Published: November 2020

Abstract
This article examines speed control systems in AC electric motors based on a permanent magnet synchronous motor. Special focus will be on the methods of parametric synthesis of controllers for controlling the speed of a synchronous motor with permanent magnets by deviation. The developed automatic engine control system should provide fixation, processing, robustness to signal, and parametric disturbances. The article also presents the results of digital modelling of a vector control system for a permanent-magnet synchronous motor and comparative analysis of these methods for synthesizing an engine control system based on the results.
Design of determining performance indices of positioning drive using computer vision laboratory bench
Authors: Popov N S , Domakhin E A , Anibroev V I , Singizin I I 
Published: November 2020

Abstract
The right choice of an electric machine directly affects the quality indicators of the technological process. Positioning accuracy and movement repeatability are key parameters for the robot. A servo drive with position feedback is most suitable for these requirements. A robot based on DC servo drive was built for educational purposes. In order to determine the quality indicators of the drive control, an experimental setup was built, and software was developed for the experiment using computer vision. As a result of the obtained data analysis, significant shortcomings of this drive type were detected.
Traction characteristics modeling of a linear motor for driving an electromagnetic press
Authors: Aksyutin V A , Less V M , Prokopov A V 
Published: November 2020

Abstract
The research relevance is connected with the need to improve the calculating methods of the linear press motor used in the drive of the press. As a research object, a cylindrical electromagnetic engine, powered by a pulse voltage source is examined in this paper. The results of the traction characteristics modeling of an electromagnetic motor, which determines the useful mechanical work and the efficiency of the electromagnetic press, are presented here. A simplified model is proposed in the form of an equivalent magnetic circuit of an electromagnetic motor. The calculation is based on the law of the total current for a closed magnetic circuit, depending on the core position coordinate. By solving differential equations of the second order, simple analytical expressions are obtained that allow calculating the electromagnetic traction force depending on the current and the position coordinates of the moving core of the electromagnetic press motor. An example of calculating the traction characteristics of calculating an electromagnetic motor is considered based on the created model. The results of comparing the calculated traction characteristics with the results of calculations obtained by other researchers are also presented.
Investigation of the heating mode of nonmagnetic products in the induction system with permanent magnets
Authors: Aliferov A I , Morev A E , Promzelev V A 
Published: November 2020

Abstract
The relevance of the work determined by the fact that at the present time in the area of new energy-saving electrotechnologies for heating of non-ferrous metals products focus is on induction heating in a transverse magnetic field, meanwhile not it is covered by the heating method in a transverse magnetic field a large range of products with rectangular cross-section made of non-ferrous metals. Currently, such products are heated in the induction heating installations in an alternating longitudinal magnetic field while electrical efficiency is not greater than 0.5. The attractiveness of heating of such products in the transverse rotating magnetic field of the permanent magnets is its potential to achieve electrical efficiency equal to 0.75-0.85. In the presented article, it is discussed performed studies of heating of aluminium products with rectangular and cylindrical cross-section to a temperature of 550 ° C.
Simulation of dynamic modes of power supply systems equipped with diesel generators, at inferior power quality
Authors: Bulatov Yu N , Kryukov A V , Van Huan Nguyen , Hung Tran Duy 
Published: November 2020

Abstract
The article provides results of studies aimed at implementation of power supply systems (PSS) computer-based models in conditions of inferior power quality, where the PSS include backup diesel generators. The main aim of the study was to research these generators synchronization with the PSS network. The simulation was performed in the MATLAB environment using the Simulink and SimPowerSystems software packages. Based on the results obtained, it can be concluded that the self-synchronization method can be used for turning on diesel generators for parallel operation with PSS. After the synchronization processes completion, an improvement in the quality indicators of electricity in the PSS network and at the interfaces with the power supply system in terms of asymmetry and harmonic distortions.
Improvement means of charge batteries for electric car
Authors: Ivanov V V , Myatezh S V , Dubinina I V , Savluk I G 
Published: November 2020

Abstract
This article discusses different means to charge electric car batteries, identifies trends in the development of a non-contact method of energy transfer, the calculation of the electrical parameters of the inductors for the implementation of the contactless charge of the battery of the electric vehicle. Produced simulation magnetically coupled system to confirm the theoretical results.
Critical pipeline of the acyclic wave processor
Authors: Khusainov A A 
Published: November 2020

Abstract
This paper is devoted to studying the performance of an acyclic wave processor consisting of heterogeneous processor elements having various delays. Data channels have sufficiently large buffers. The main result is the proof of the conjecture that for an arbitrary amount of input data, an acyclic wave processor contains a pipeline whose operating time is equal to the data processing time using the entire wave processor. This pipeline is called critical. For partially testing the conjecture, a multi-threaded application simulating the work of a two-dimensional pipeline has been developed. Earlier, the author proposed an algorithm for calculating the input processing time, the complexity of which depends not only on the number of stages but also on the amount of data. The proven conjecture eliminates this drawback, it allows building algorithms for calculating data processing time, the complexity of which does not depend on the amount of data. In particular, for any class of acyclic wave processors that have some algorithm of polynomial complexity for listing maximum pipelines, it is easy to construct a polynomial algorithm for calculating the data processing time for an arbitrary volume.
Algorithms for determining the maximum power point for photo modules at weather stations
Authors: Kochmarev K O , Malozyomov B V , Boginskaya O A , Ignatev I V , Gavrilova Zh L 
Published: November 2020

Abstract
The work is devoted to methods for increasing the energy efficiency of photovoltaic modules. Various algorithms for determining the maximum power points and their application to obtain the maximum possible efficiency when using solar panels are considered. The principles of the operation of algorithms are described; their advantages and disadvantages are indicated. Their comparison was carried out according to the main significant parameters. The most suitable algorithm for application at a weather station has been selected.
Vehicle energy consumption as factor of combined power plant parameters’ definition
Authors: Kulikov K I , Schurov N I 
Published: November 2020

Abstract
The development and creation of innovative transport systems, environmentally friendly and energy-efficient vehicles must be considered as the strategic direction of the global transport industry. The equipment improving and its operation modes optimization allows efficient use of available traction drive resources. The implementation of innovative technologies using modern storage devices and non-traditional fuels provide high-efficiency electricity usage by the electrical complex. The hydrogen fuel usage is considered in this article as one of the common areas of electric vehicles development. Hydrogen is the first element of the Periodic Element System and the most common in the universe. On Earth, by the number of atoms in compounds (17%) Hydrogen is second only to oxygen (52%). Hydrogen is non-toxic - combustion products are water vapors, it has the highest combustion heat per unit of mass compared to other types of fuels. All these factors, coupled with the current trends of the widespread implementation of energy-saving technologies, are encouraging the world’s car companies to move from the advancement of the traditional car to the design of new types of vehicles using Hydrogen as the primary source of energy.
The concept of creating an adaptive sensorless system for monitoring the load of electromechanical equipment
Authors: Varykhalov D A , Pimenova O N , Ugarov G G , Moshkin V I , Lappi F E 
Published: November 2020

Abstract
The concept of building sensorless systems for monitoring the load of electromechanical equipment is proposed based on the possibility of determining the instantaneous value of mechanical power based solely on the values of currents and flow connections that determine the operating modes of the machine. A criterion for evaluating the efficiency of an electric machine is proposed in the form of an optimal energy conversion mode, characterized by the theoretically maximum achievable level of the developed mechanical power of energy conversion. It is shown that it is possible to determine the mechanical power developed by an alternating current electric machine based on the flow coupling associated with the winding and the current flowing in this winding. The optimal phase shift angles for the motor and generator modes of operation of an electromechanical energy Converter, which form the maximum mechanical power of energy conversion, are determined.
Diagnostics of emergency conditions of the engine DC
Authors: Menshchikov I A , Ugarov G G , Moshkin V I , Petrenko Y V 
Published: November 2020

Abstract
The article presents the results of an experimental study of the diagnostic process and mathematical processing of diagnostic information using logarithmic spectral analysis of the values and shape of the current in the DC armature circuit with various damage to the armature winding. Diagnostics of the state of DC electric machines is an important practical task. Failure to detect timely violations of the operation of individual components of the machine, in particular, damage to the armature winding can lead to serious accidents at work. Most of the currently used diagnostic systems have been developed based on studying the design of electrical machines and physical processes of converting electromagnetic energy, both experimentally and by analyzing mathematical models. Today’s available measuring and computing technologies have made it possible to use many previously studied phenomena in diagnostics. They have also become the basis for searching for new signals that enrich diagnostic information.
Issue of maintenance of energy converter factor of the cavitation heat generator at constant level
Authors: Porsev E G , Malozyomov B V 
Published: November 2020

Abstract
The problems of converting mechanical energy into heat, which involves the use of cavitation phenomena in a moving fluid to obtain heat in an amount exceeding the electrical energy at the entrance to the system, are considered. Recommendations are given for production to generate heat for the heating buildings and hot water to reduce primary energy consumption and increase the level of environmental safety.
Study of the patterns of change in absorption current over time and its use for measuring insulation resistance
Authors: Solomentsev K Yu , Lachin V I , Dyachenko V B , Plotnikov D A , Khovpachev A A , Solomentsev Ya K 
Published: November 2020

Abstract
The article presents a computer simulation of absorption currents in dielectrics. The results of the study of changes in the absorption currents in time, as well as accelerated measurement of the insulation resistance taking into account the absorption current, are considered. When measuring the insulation resistance of electric power facilities, the absorption current which flows through the insulation and drops to zero in a very long time may initially exceed the leakage current. The article analyzes various patterns of representing the absorption current and proposes a new formula containing exponential and power functions. An approach is proposed for accelerated measurement of insulation resistance using extrapolation of absorption currents, that is, the calculation of the value (forecast) of the steady-state current in the measuring circuit, without waiting for the end of the absorption current flow and transients.