bluuebunny/crossref_metadata_2025_split huggingface dataset:
Automation of control of electric generators from renewable energy sources in hybrid power supply systems
Authors: Kolnichenko Georgij I , Tarlakov Yakov V 
Published: May 2020

Abstract
The article notes that due to the increasing number of electricity generating equipment based on renewable energy sources and consumers of electricity received from them, it becomes necessary to combine generating sources, consumers and control units into autonomous electric power systems. Due to the uneven generation and consumption of renewable energy sources under the influence of external conditions (wind, solar radiation, etc.), renewable energy sources should be reserved by means of traditional energy in the so-called hybrid mode, when traditional alternators must work together with renewable energy sources. In this case, the task of creating a tracking inverter that converts direct current (DC) to alternating current (AC) according to the characteristics of the AC generator arises. At Bauman Moscow State Technical University the experimental samples of a DC-to-AC inverter with its own logic and microcontroller have been developed and created. They control the conversion mode either by the signals of the reference AC network, or by the signal of the microcontroller. The proposed devices are designed to fully automate power generation processes and power consumption processes in hybrid power supply systems and are designed to manage input and output generating capacities and power consumers to ensure maximum efficiency of power generation from renewable energy sources.
Analysis of diesel engine indicator diagrams when working on methanol with DST
Authors: Devetyarov R R , Chuvashev A N 
Published: May 2020

AbstractThe significant cost of diesel fuel, limited reserves of oil and natural gas have made the work aimed at finding and justifying the use of alternative fuels relevant. Alternative fuels include methanol, which can be obtained not only from natural gas and coal, but also from bi-omass or urban waste. Methanol can be attributed to renewable energy sources. It should be noted that the development of a fundamentally new engine model that meets modern environmental and economic requirements requires long-term research and high material costs, so our research is aimed at upgrading commercially available engines. The article presents the results of implementing a method for using methanol by feeding it directly into the combustion chamber and igniting it from the igniting part of diesel fuel. The indicator indicators of the developed diesel engine when working on methanol at different angles of injection of diesel fuel and methanol are analyzed. Optimal installation angles of fuel injection are selected and justified.
Investigation of the impact behavior for composite materials reinforced by glass fibers
Authors: Karnoub Amer , Huang Hajian , Antypas I R 
Published: May 2020

Abstract
In this present work, a non-straight Shear-lag model has been created to anticipate the pressure centralization of a customary hexagonal cell containing a two-bundled fiber. This work is concretized by the advancement of a hypothetical plan of the micromechanical redistribution of the anxieties produced by the transverse burst along the strands in a unidirectional composite as an element of the number and the air of the messed up and flawless filaments. The scientific improvements utilized are introduced to legitimize the state of the conveyance of the worries around the messed up fiber and the adjoining filaments. The limit and coherence conditions are considered by this model to evaluate the exchange pace of the strands, imperatives through the lattice between the fiber broken and the neighboring filaments unblemished.
Wide-angle antenna systems with mechanoelectrical beam steering
Authors: Litinskaya Ye A , Stankovsky A V , Polenga S V , Salomatov Yu P 
Published: May 2020

Abstract
This article presents an overview of scanning antenna systems’ models, which were developed on basis of the laboratory “Antennas and microwave devices” of Siberian federal university. An antenna array with beam steering by mechanical dielectric lenses rotating and an antenna array with beam steering by mechanical subarrays rotating are introduced. Calculation and measurement results of the antennas are shown.
Typology of innovation strategies for petrochemical enterprises
Authors: Barsegyan N V , Salimyanova I G , Kushaeva E R 
Published: May 2020

Abstract
The article defines the role of the petrochemical industry in the development of the economy as a whole. The key problems of innovative development of the Russian petrochemical complex that are typical for the current stage are identified. The purpose of the study is to analyze the organizational and economic processes of formation and implementation of innovative strategies for the development of petrochemical enterprises and practical recommendations for improving their performance. To achieve this goal, the role of the components of the innovative potential of enterprises in the development of the economy is determined; the analysis of directions of development of innovative activity of the main foreign players in the market of petrochemical is carried out; strategies of innovative development of petrochemical enterprises are formed. It is concluded that in the era of digitalization of industry, the priority strategy for the development of the petrochemical complex is resource conservation.
Modeling of dimension chains of pressure control devices
Authors: Mikhailov P G , Chuvykin B V , Mikhailov A P , Fadeev E D , Sokolov A V 
Published: May 2020

Abstract
The article is devoted to pressing issues in the field of instrumentation and measuring equipment: the correct assignment of tolerances and landings in the manufacture and assembly of parts and assemblies of measuring transducers of physical quantities. In the process of developing converters, an obligatory design procedure is the construction of mathematical models of dimensional chains, which are analytical and numerical equations consisting of geometric dimensions shown in the drawings. Moreover, these models include both nominal geometric and angular dimensions, and the tolerances adopted on them. Using the minimum-maximum methods, it is quite simple to calculate the dimensional chains for simple parts and assemblies. Complex parts and assemblies having a large number of sizes included in the dimensional chains are calculated by statistical methods using specialized programs.
Analysis of the possibility of modernization of the state district power station by building the combined cycle plant
Authors: Balzamov D S , Yu Balzamova E , Bronskaya V V , Ignashina T V , Kharitonova O S 
Published: May 2020

Abstract
A priority task for the development of the energy industry is the replacement of the spent estimated lifetime of the generating equipment by new capacities taking into account progressive technologies. Nowadays, combined cycle technology shows itself to good advantage and provides excellent efficiency for any competing gas turbine systems that are likely to be available for large-scale electricity and heat production. In this article the possibility of modernization of the SDPS by building the combined cycle plant is considered.
Investigation of local maxima of the modified modular correlation function
Authors: Malinichev D M , Melnikova E A , Prus Y V 
Published: May 2020

Abstract
Recently, due to the development of communication systems for various purposes, there is a need to use indirect methods for calculating the correlation function. There are several algorithms for calculating indirect correlation functions, one of which is modular. The article examines the properties of local maxima of correlation functions of various types.
Quality estimation of the technology process controlling system of making the glass rods
Authors: Alekseeva L B 
Published: May 2020

Abstract
The article considers the transition process of controlling the drawing of glass rods (Light guide). To solve that problem the static and dynamic features of the object have been considered. The process of drawing the light guide is being made by adjusting the speed of the output link of the drawing machine. The paper considers the driven glass movement in the light guide formation zone and determines the transition process pattern, in a system: “Controlling machine – formation zone”. The time of the transition process is being estimated.
Application of additive technologies for manufacturing turbine stator parts in aircraft engines
Authors: Balyakin A V , Vdovin R A , Ispravnikova S S 
Published: May 2020

Abstract
Continuous development of additive technologies and fast prototyping methods makes it possible to use them in manufacturing of complex shape models to a high precision. The traditional technological manufacture process of critical hot gas path parts by investment casting is expensive and time consuming in view of its technological complexity. It is related to the wax casting process which provides complex profiles with high geometrical accuracy. The acceleration of the investment casting process should increase the productivity of the manufacturing process of such hot gas path parts as the turbine stator, however, it is not allowed to decrease the geometric accuracy of the finished product. The aim of this work is to compare technological processes for manufacturing turbine stator parts at various temperatures using the fast prototyping method (wax casting in silicone molds). The dimensional analysis of the stator castings showed that casting in silicone molds provides the required geometric accuracy. Thus, silicone molds can be viewed as a good cost-effective solution for small-scale or pilot production of high-precision complex parts in gas turbine engines. This article describes the procedure for the integrated application of additive technologies and thermographic analysis to accelerate the investment casting process by determining the optimal temperature conditions and cooling period. Ultimately, it reduces the duration of the production cycle and the cost of the finished product while retaining the quality characteristics.
The upgrade heat flux sensor application for early fire detection
Authors: Klochkov S V , Minkin A N , Masaev S N , Krekhov A A 
Published: May 2020

Abstract
The paper focuses on the description of the characteristics of the upgrade heat flux sensor, as well as the consideration of various models of its application to identify the source of combustion. The device uses a photovoltaic cell used to determine the thermal radiation intensity. The value thus defined is subsequently digitized and applied to determine the location of the radiation source. Among other things, this enables to use the device for finding the fire coordinates in order to extinguish it effectively using robotized fire complex. It is proposed to upgrade the device, which is to extend the temperature range of operation, and also to increase the speed and number of detectors in the line. The paper also provides a structural diagram of the functional sensor elements. A patent has been received for an improved device. Since the photovoltaic cell of a new sample with improved properties is used in the device, the article also provides an analysis of its characteristics, influence curves of the intensity of the heat radiation source on distance, as well as lines of constant signal strength. The data obtained were used to create three types of fire detection models, depending on the geometric parameters of the protected premises and the location of the combustible content source.
Development of a program for converting diesel engines to natural gas
Authors: Likhanov V A , Lopatin O P 
Published: May 2020

AbstractFor the transfer of diesel engines to work on compressed natural gas, a program of experimental research of diesel engines is presented, including the development and optimization of natural gas supply and control systems, determination of effective indicators and indicators of toxicity and smoke content of exhaust gases, determination of the actual pressure of the working fluid in the diesel cylinder with the processing of indicator diagrams, analysis of the parameters of the combustion process and heat release, selection and description of the necessary equipment for bench experimental studies.
An automatic test complex for unmanned aerial vehicle engines
Authors: Drozd O V , Avlasko P V 
Published: May 2020

Abstract
One of the most important components of an aircraft ground testing infrastructure is hardware and software test benches with complete or partial imitation of the aircraft in complex, on-board electronic equipment and controls. The development and debugging of such complexes is a complicated problem. The solution for this problem is presented in in the form of the automatic test complex for unmanned aerial vehicle engines and propulsion devices mounted on the Gough–Stewart platform manipulator. The complex is based on the modular measuring platform and also includes a set of various sensitive elements for forces, vibration, speed, torque, video and sound registration. The article also describes the procedure for one of the functional assessment stages of the U AV engine test complex, notably, the assessment of the tensometric measurement accuracy. Further development of the complex associated with the software implementation of atmosphere, wind turbulence models and modules for preliminary formation of test scenarios-UAV flight paths.
Application of stochastic control method on manifold at immunology problem
Authors: Kolesnikova S I , Avramyonok V A 
Published: May 2020

Abstract
The purpose of the paper is to study the principal appropriateness of the synergetic control theory to the simplest immunological object with the initial description in the form of a system of nonlinear differential equations. Physically, the control here refers to a regime to administer anti-disease substances. Based on the analytical synthesis, two control systems for an object were obtained: 1) for a continuous deterministic case; 2) for a discretized model with additive random noise in a controlled variable. The results of numerical modeling of the developed control systems that can be used in the respective decision support systems are presented.
Development of national standards for the needs of the water industry on the examples of the aluminium polyoxycloride
Authors: Sambursky G A , Ustinova O V , Pogorely A M 
Published: May 2020

Abstract
An important stage in conditioning of water before its supply is the use of coagulants, with polyaluminium chloride being one of such agents. Active application of this coagulant began late last century, and its global output has been consistently growing since. The purpose of the work was to create a new standart because of the need to ensure a uniform assessment of the quality of the proposed coagulants. The necessity of unification in the field of quality control processes of coagulants is shown. General requirements for quality control of aluminum polyoxychloride are formulated. In particular, the standard contains universal methods to determine impurities and main quality parameters (basic capacity, contents of aluminium oxide and chloride ions) in polyaluminium chloride; regulate pH, residual aluminium, chlorides and heavy metal ions for the whole concentration range of the active ingredient in the agent (i.e. the standard covers both dry and liquid products); avoid use of low-quality raw materials (including aluminium scrap) in the production of polyaluminium chloride; characterise high- and low-basic products (given a non-linear change in properties at different concentrations); regulate frequency of and conditions for checking polyaluminium chloride against declared parameters.
The use of logical-linguistic apparatus to describe the functioning of medical systems
Authors: Korobova L A , Matytsina I A 
Published: May 2020

Abstract
The article describes the developed medical systems. The basis of systems is the mathematical apparatus of fuzzy logic. The advantage of logical-linguistic models is their universality. The components of the model are easily upgradeable. The article discusses examples of models related to medicine. The first model is used to recognize cough sound signals. The sound signals database includes sound signals for coughing patients of a medical institution of the pulmonology department. The developed model has been tested in a hospital, and is also used in the educational process of several higher educational institutions. To develop the second model, statistical data related to the field of eye diseases were used. Based on the collected data, a model has been developed to support adoption in the diagnosis of eye diseases.
Assessment of the influence of measurement error on the quality of selective assembly
Authors: Golinitskiy Pavel , Antonova Uliana 
Published: May 2020

Abstract
The article considers the influence of measurement error on the quality of selective assembly using the example of a piston-cylinder liner connection. The quality of repaired parts, assemblies and assemblies depends on a rational choice of measuring and control instruments in order to reduce the number of incorrectly received and incorrectly defective parts, and, in turn, internal and external losses, especially with regard to ensuring quality and accuracy of control of parts during selective assembly.
Information-analytical system of cardiographic information functional diagnostics
Authors: Grigorenko V V , Eskov V M , Nazina N B , Egorov A A 
Published: May 2020

Abstract
The article considers the Information-analytical system of cardiographic information functional diagnostics, which allows expanding the functionality of using miniature medical devices for non-invasive diagnostics of parameters of complex dynamic biomedical systems, using the example of cardio-intervals of the cardiovascular system. The system is based on not only the methods of the deterministic-stochastic approach but also the methods of the theory of chaos-self-organization, as a new scientific approach in the natural sciences. The method is based on calculating the parameters of quasi attractors and analyzing matrices of pairwise comparisons of time series of complex biomedical systems, which allows quantitatively and qualitatively describing the chaotic dynamics of the system state vector behaviour, obtaining objective information about changes in the functional state of the system, and also warning about these changes in time (if pathologies), which creates conditions for the status of the functional systems of the human body physiological monitoring.
Tool positioning device of a surgeon for the low-invasive surgery
Authors: Gryazin V A , Bagautdinov I N , Baev A A , Egorov A V , Lysyannikov A V , Kaizer Yu F , Agafonov E D , Sharshembiev J S 
Published: May 2020

Abstract
The article considers the technical features of a digitizer which is to be used as a part of the system of intraoperative navigation. To reduce the costs for the manufacturing of a 3D-digitizer, we have shown the advantages of the special bench which provides the check of the values obtained by the shaft encoders used to record the positions of the manipulator depending on the actual dimensions of the basic elements of the device. The results of the mathematical experiment have shown that the calibration algorithm of the 3D-digitizer is fully functional and provides the opportunity to measure the actual dimensions of the basic elements of the device; to record the values of the shaft position encoder; to calibrate the values of the shaft position encoder taking into account the actual dimensions of the basic elements of the device.
Geoinformation modelling of quotas distribution of technogenic load for water users
Authors: Zhilnikova N A 
Published: May 2020

Abstract
The method of redistributing the technogenic load according to various scenarios of combined impact for industrial enterprises of territorial natural-production complexes using the geoinformation online environmental management system and managing anthropogenic load quotas for water users is described. Proposed method allows to determine zonas of negative impact of existing industries and zonas with maximum pollution, to reduce negative impact from production to the aquatic environment of separate river basin due to optimization of the load level.
Problems and ways to reduce measurement uncertainties in evaluating the geometric assembly parameters of gas turbine engine assemblies
Authors: Grachev I A , Bolotov M A , Kudashov E V , Pechenin V A 
Published: May 2020

Abstract
The measurement results of the geometric parameters of the parts play an important role in the assembly process of gas turbine engine assemblies The article provides an analysis of the problems of reducing the measurement uncertainties of gas turbine engine parts. Significant uncertainties in the measurement of the geometric parameters of gas turbine engine low-rigid parts are caused by uncertainties in the processing algorithms for measured data. The ways of improving the processing algorithms for measured data are proposed, they are based on taking into account the contact of the surfaces during assembly and the rigidity of the measured parts. Theoretical and experimental studies of the uncertainties in the processing algorithm for measured data are carried out, using the example of measuring the geometric parameters of a low-rigid part of the “spacer” type. Comparison of three variants of the processing algorithms for measurement results are presented.
Development of the point scoring system of medical parameters for HIV severity monitoring and modeling in numerical terms
Authors: Ponomarev D S , Ponomarev S B , Averyanova E L , Polishchuk V E , Burt A A 
Published: May 2020

Abstract
The article considers the possibility of using a point scoring system of medical parameters for HIV severity monitoring and modeling in numerical terms. There were investigated the features of the use of medical parameters in the form of a point scoring system as well as the possibility of applying a numerical model for determining the HIV severity when tuberculosis is joined. To solve the problem, it was developed a step-by-step algorithm for applying the point scoring system. Conclusions were drawn. The possibility to predict in numerical terms the outcome of the disease (in particular the AIDS progression) using the number of systematically collected medical parameters in HIV carriers is of great interest. The information system development allows to determine the most important properties of the process and to separate its non-essential characteristics. Often the information system and modeling allow us to formulate new hypotheses and gain new knowledge about the object, those which were not available during the research.