bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increasing operation capacity for spherical bearing of indexing spatial mechanism under load
Authors: Zakharenkov N V , Konovalov V E , Kvasov I N , Bigushev Sh M 
Published: September 2019

Abstract
Indexing rotary mechanism is widely used in automatic machines. There are studies of such mechanism kinematics showing its effectiveness. The undertaken strength studies demonstrate the ability of the mechanism to operate under specified loads. Actual tests performed on prototypes exposed inoperativeness of the spherical bearing, namely jamming, under the load. The current work analyzes the failure of the spherical bearing. Factors affecting the jamming are determined as well. Such factors are forces at engagement and the friction forces at spherical surfaces contact. Structural provisions are proposed and considered to solve the issue of jamming and provide the mechanism normal operation.
Mixed Random Sampling of Frames method for counting number of motifs
Authors: Yudina M N , Zadorozhnyi V N , Yudin E B 
Published: September 2019

Abstract
The problem of calculating the frequencies of network motifs on three and four nodes in large networks is considered. Telecommunications networks, cell molecular networks are investigated. The sizes of the investigated networks are hundreds of thousands of nodes and connections. These networks are represented in the form of directed and undirected simple graphs. Exact calculating requires huge computational resources for such large graphs. A method for calculating the frequencies of network motifs using the Monte Carlo method with control of an accuracy of calculations is proposed. The proposed effective method minimizes the value of the coefficient of variation.
Increasing the selectivity of semiconductor gas sensors working at sinusoidal-varying temperature for machine industry safety systems
Authors: Demin I E 
Published: September 2019

Abstract
The article considers the possibility of creating a sensor system on the basis of 50%In2O3–50%Ga2O3 thin films, functioning at sinusoidal-varying temperature, with high selectivity to a number of key industrial gases including ethanol, acetone, ammonia, and propane-butane. A study of temperature and time dependencies of resistance at a sinusoidal-varying operating temperature was conducted. The deviation of the dynamic dependencies of the resistance from the harmonic law was detected, the reason of which should be considered to be the non-linearity of the temperature dependencies of the gas-induced response and the response time constants. The complex shape of the obtained dynamic characteristics was analyzed using Fourier transform. It has been shown that the resultant Fourier images can be used as sources of a large number of information parameters, which are suitable for increasing the selectivity of the sensor system operating in the considered mode of operation. It has been demonstrated that the selection of the amplitudes of the first three harmonics of Fourier images as information parameters allows the unambiguous identification of the type of the analyzed gas.
Control systems design: the technology of simulation and optimization
Authors: Denisova L A , Meshcheryakov V A 
Published: September 2019

Abstract
The simulation and optimization technology is proposed for creating control systems that are designed for heat and power facilities. This paper presents an automatic feed control system of steam generators in the nuclear power plant unit on the basis of microprocessor controllers. The technology of simulation and optimization combines the methods of statistical modelling of disturbance signals, the control system simulation and the controller parameters optimization using genetic algorithm. As the initial data for the model design, we used archival information about processes on the existing unit equipment. The results of simulation studies and optimization of automatic control system’s parameters are derived in MATLAB.
Multistage self-orientating gauge measuring system best fitting parameters for circularity estimation
Authors: Diakov D , Vassilev V , Nikolova H 
Published: September 2019

Abstract
The deviation of circularity estimation of large-scaled details in many cases is a serious metrological problem, which can be solved using a measuring system based on a multistage self-orientating gauge. The purpose of this paper is to study the influence of the gauge parameters on the accuracy of measurement of the circularity deviation and optimization thereof in order to ensure the maximum correspondence between the real and the measured profile. The accuracy of the re-creation of individual and group of harmonic components of the profile is examined. Analytical and experimental research results are provided.
Automatic mixers for the synthesis of functional mixtures with desired properties from small batches
Authors: Evseev A V 
Published: September 2019

Abstract
This study presents the advantages of automatic rotary, biorotary, conveyor mixers compared to existing designs of mixing devices. The relevance and novelty of the development are shown by obtaining a total batch of a mixed product with a given qualitative and quantitative characteristics from the available small batch mixtures, which differ in technological parameters. Quality control for the obtained mixtures is also analyzed.
Complex approach for monitoring the parameters of the wire
Authors: Galagan R , Muraviov A , Tomashuk A 
Published: September 2019

Abstract
The paper briefly describes the diffraction method for measuring the diameter of long-length products such as metal wire, optical fiber, chemical fiber, metal ingots or nonmetal. A method and optical device for monitoring the diameter and surface temperature of such products are proposed. The main advantage of the proposed method is to monitoring the parameters of the heated product even on the defocused image. In this paper we propose a set of methods that can improve the accuracy of measuring the diameter and temperature of such products. The methods are based on optical phenomena and digital image processing methods.
Study of friction between the web and the air turning bar
Authors: Kudryavtsev S A , Kulikov G B , Gersenshteyn I S , Syltanova Y M , Kulikova E V 
Published: September 2019

Abstract
In this paper, we will discuss a method used to reduce friction and ink set-off in web-fed machines through implementing an air cushion between the web and the air bar used to influence the web trajectory. In the available academic literature, there is no study of the friction force between said two surfaces. Our goal is to establish a correlation between air tension, tensile and the web’s width. A specially designed experimental air bar was created; in a series of experiments, air was fed into the gap between the bar and the wrapping web. The results (friction force’s dependence on air tension, tensile and web’s width) are to be taken into account while designing web conductors for web-fed printing machines.
New diagnostic signs of the technical condition of piston compressors on the basis of characteristic function of the vibroacoustic signal
Authors: Kudryavtseva I S , Naumenko A P , Odinets A I , Bardanov V E 
Published: September 2019

Abstract
Topical issues of formation of the system elements of diagnostic signs of malfunctions and defects of piston compressors are considered in the paper. Diagnostic signs are formed on the basis of parameters of vibroacoustic signal. Vibration sensors are installed on various units of the piston compressor. Usually sensors are installed on the cylinder in the axial direction, on the compressor valves, on the crosshead, on the main bearing. Today, there are effective ways to assess the condition of components and parts of piston compressors on the parameters of the vibroacoustic signal, which are developed by the authors of this work. Diagnostic signs are based on statistical parameters of vibroacoustic signal such as the root-mean-square value of vibroacoustic signal, quantile of instantaneous values of vibroacoustic signal, spectral invariants the vibrating acoustic signal envelope. The first two groups of diagnostic traits are formed on the basis of statistical processing of signals for different types of machines. Thus, these features can only be used for a certain type of piston compressors. The appearance of faults and the degree of their hazards are estimated by the spectral inversion of the envelope of vibroacoustic signal regardless of the type of the machine. To increase certainty and reliability of diagnostics in this work it is suggested to use the size of module characteristic function of instantaneous values of vibroacoustic signal at the specified parameter characteristic function. Given that the module of the characteristic function varies from 0 to 1, it can be assumed that the value of the characteristic will not depend on the absolute value of the signal and, accordingly, on the type of machine. In this case, the characteristic function of the vibroacoustic signal is used, which is obtained at certain intervals by the angle of rotation of the crankshaft of the piston compressor in the region of the lower and upper dead points. Using probabilistic-statistical decision-making methods and the probability density functions of the modulus of the characteristic function, which are determined for different states of compressor nodes, the boundary values of the modulus of the characteristic function are obtained. Thus, the authors managed to get a diagnostic sign of faults and defects, which does not depend on the absolute value of the vibration acoustic signal. Thus, it is possible for the authors to first obtain a diagnostic feature of faults and defects on the basis of probabilistic characteristics of the vibration-acoustic signal, which is independent of absolute value of vibroacoustic signal.
Metrological analysis of measurements of elastic deformations in the contact zone of spherical corundum of the tips with the surface of the product
Authors: Leun E V 
Published: September 2019

Abstract
The article analyzes indirect measurements of elastic deformations of ld during video recording of the contact zone between the corundum spherical tip and the surface of the product. These measurements are due to the need to compensate for elastic deformations ld to improve the accuracy of contact measurements of the dimensions of the products characteristic of all measuring instruments: coordinate measuring machines, active control devices and other devices.
The method of measuring elastic deformations ld is similar to the measurement of Brinell hardness, but with a small clamping and immersion in the product of a spherical tip made of high-strength optically transparent material and the implementation of on-line visualization and video recording by a built-in measuring microscope of the formed control zone. Determined the sensitivity of this method, non-linear related to the radius of the spherical tip, Rtip and elastic deformations ld. The obtained expression for the measurement error of the deformations Δld that largely depends on thermal expansion of the tip ΔRtip(ΔT) and the registration error of the zone control Δlzc.
Software and technical implementation of intelligent energy-saving control systems based on industrial controllers
Authors: Yu Muromtsev D , Gribkov A N , Shamkin V N , Tyurin I V , Belousov O A , Belyaev M P 
Published: September 2019

Abstract
Automation and control systems of technological objects are widely used in almost all industries currently. They allow continuous monitoring of the main operating parameters of the object, as well as provide a synthesis of control actions to achieve the best performance indicators of the technological installation, both in terms of performance and energy saving. Therefore, the problem of developing systems for optimal energy-saving control is very significant and relevant. The article deals with the issues of software and hardware implementation of energy-saving systems for managing complex technological objects. The generalized structure of the energy-saving control system software, obtained by decomposing the system into separate functional subsystems and program modules, is presented. The proposed software structure is largely universal and invariant to various control objects. The main components of the technical support of the energy saving control system are considered. A practical example of software and hardware implementation of the system of energy-saving control of dynamic modes of a group of heat engineering devices (multi-section roller-belt drying units) based on industrial controllers is shown.
Algorithmic presentation of printed electronics verification in-process
Authors: Nagornova I V , Bablyuk E B , Lazareva O V , Trapeznikova O V , Charushina E B 
Published: September 2019

Abstract
Printed electronics products manufacturing is in the emerging stage demanding both technological infrastructure and methodological procedures development including performance monitoring system organization. In the study the developed verification in-process algorithm for flexible and wearable electronics production in the case of RFID-antenna, strain-gauge sensor and OLED-pixels based on updated printing techniques and equipment is proposed. It was shown the most valuable monitoring factors impacting deliverable end item quality are production-driven roughness parameters substrate and the underlying layers (elements), their intermixing and thermal post-processing conditions. The tolerance checkpoints parameters, patterns of selected parameters interaction and optimal monitoring stages were fixed.
Modelling of soft starters for automated electric drive
Authors: Nikonova G V , Nikonov A V , Makarochkin V V , Garms P G 
Published: September 2019

Abstract
In this paper we investigated the conditions of favorable start-up of fixed-speed induction motors in order to increase the functional reliability of the engines. The methods of controlled soft start of induction electric motors with a squirrel-cage rotors are investigated. The study of the mathematical model of induction motors for determining the dependencies of reducing the dynamic component of the transient electromagnetic moment and the magnitude of the starting current. A computer simulation to identify the effectiveness of different methods of controlled start-up of induction motor was carried out. To generate the starters’ models, the MatLab modelling application, Simulink and SimPowerSystems block libraries were used. Based on the results of transient processes simulation in MatLab, the comparative characteristics for different methods of starting an induction motor were given.
Feed rate evaluation of mechanical toothed hopper-feeding device with ring orientator for parts, asymmetric at the ends
Authors: Pantyukhina E V , Preis V V , Khachaturian A V 
Published: September 2019

Abstract
The paper considers an advanced design of a mechanical toothed hopper-feeding device with a ring orientator designed for automatic feeding of ax symmetric parts in the form of bodies of rotation, asymmetric at the ends, into technological machines. A new theoretical approach to the mathematical description of the feed rate of the mechanical toothed hopper-feeding device is proposed. This theoretical approach allows a correct assessment of the feed rate for various parts at the design stage of the technological machine, as well as to justify the rational parameters of the hopper-feeding device, in which its feed rate will be maximum.
Improving the quality of manufacture of the differential pinion gears through the integrated application of statistical methods of quality management
Authors: Safarov D T , Kondrashov A G 
Published: September 2019

Abstract
An approach is proposed to ensure a stable spot size in the interfaces of the satellites with the central gear. Characteristics are proposed for estimating the position of the contact patch on the lateral surface of the tooth The characteristics of the contact patch after circular broaching were analyzed using various statistical methods. The dependence of the characteristics and position of the contact patch on the tooth surface on a number of factors has been revealed. Proposed measures for their stabilization.
Application of the conformal mapping for state analysis of track circuits
Authors: Sokolov M M , Lunev S A 
Published: September 2019

Abstract
In the article, we present the results of using conformal mapping for state analysis of track circuits in various mode of operation. The work shows that the state of a track circuit can be derived from its input resistance. The article shows nomograms of input resistances when the rail line characteristics change. Authors regards that the input resistance areas for the control and shunt modes of the track circuit are completely separable over the entire range of variation of the rail line parameters. Nomograms of input resistances can be used in systems for diagnosing and monitoring track circuits.
Approach to the estimation of print layers offset in the printing system
Authors: Trapeznikova O V , Kolozova O A , Trapeznikov E V , Serkova L B 
Published: September 2019

Abstract
A significant number of scientific works and inventions is devoted to the problem of quantitative and qualitative accuracy evaluation of color reproduction, including its automation. Various approaches and methods of managing parameters estimating the quality of color image transmission on various information carriers, including printed media, are used in our country and abroad. However, in estimation the offset of printed layers, along with the control of color-to-color registration, it is important to determine the distance between raster point size and the initial one. The paper considers the approach to solving this problem. It is shown that the method provide not only the area of the nana-pattern estimation, but also the amount of nana-pattern offset relative to the ideal nana-dot.
Choosing the best objects by a set of the qualitative features
Authors: Gegechkori E T 
Published: September 2019

Abstract
It is generally accepted that the choice of the best technical solutions in the design of complex technical systems must be carried out on the basis of a multi-criteria approach. However, it is known that at the initial design stages, developers, as a rule, do not have exact values of basic technical indicators. Moreover, many (if not all) indicators are qualitative in nature, and the probability of making a non-optimal decision increases due to the uncertainty of the initial data. Therefore, it is advisable to try to restrict the choice domain, eliminating the deliberately “uncompetitive” objects. In the well-known ELECTRE method, for this purpose, some “preference” relation is introduced, indirectly determined by the choice of “weights” of particular quality indicators and threshold values of the so-called concordance and discordance indices. Unfortunately this approach is characterized by the lack of a clear operational sense of the weights and thresholds introduced, as well as the possible occurrence of oriented cycles in the preference relation graph. This makes it difficult to interpret the results of applying the procedure for excluding “worst” objects by the ELECTRE method. In this regard, the article proposes a new approach to the problem of choice domain restriction. On the set of the objects under consideration, some irreflexive and asymmetric dominance relation is constructed, allowing a solution according to von Neumann-Morgenstern, which simultaneously is also the so-called C-core. At the same time, the considered dominance relation – unlike the preference relation in the ELECTRE method already mentioned – has a clear “physical” meaning and does not require the introduction of any directly immeasurable parameters like “weights” and “thresholds,” which always question the adequacy of the model to actual decision maker’s preferences system.
Methods of forming the join table
Authors: Zykin S V 
Published: September 2019

Abstract
The present work considers the methods of forming data views as a join table intended to be used in table-driven user applications, such as spreadsheets, multidimensional arrays, etc. The main purpose of the join table is to organize the interaction of such applications with the corporate database. The join table can be used at a physical level. This will significantly reduce the time required to generate custom data views in the applications. The use of the join table becomes inefficient, if it needs to be changed in a short period of time. However, the use of storage devices with associative access or “logic-per-track” devices for data processing will significantly reduce the join table transformation time.
Identification of mathematical models parameters of electromechanical consumers of regionally isolated electrotechnical complexes
Authors: Kovalev V Z , Arhipova O V , Esin S S , Tatevosyan A A , Scherbakov A G 
Published: September 2019

AbstractThis article considers and develops a method for identifying the parameters of mathematical models of electromechanical consumers of regionally isolated electrotechnical complexes. The validity of the proposed method application to identify parameters to determine influence of consumer characteristics on the quality of electrical energy at the point of common coupling is shown. The description of the mathematical model of the electrical energy distribution point consisting of several consumes is shown. The mathematical model is developed in the Cauchy normal form. A modification of the Marquardt method is proposed as an identification tool.
Dynamic Stability of the Valve Electric Drive in Oscillatory Mode
Authors: Kulakovskiy Yu M , Aristov A V 
Published: September 2019

Abstract
The analysis results of the dynamic stability of the electric drive in oscillatory mode by means of the supply voltage phase modulation have been provided. The determining procedure of oscillatory electromagnetic torque and its starting and damping components, as well as of motion law for the motor operating element subject to inertial, damping and positional load has been developed and tested. It was shown that the valve electric drive dynamic stability in oscillatory mode can be estimated from the time behaviour of the torque angle under the dynamic transition to the static stable mode. The natural frequency-regulating algorithm of the electric drive has been determined, operating by regulating one of the phase-to-earth voltages, as well as a pull-in criterion operating under the variation of load parameters by the start of the electric drive on the specified oscillatory frequency. A chain diagram of electric drive in oscillatory mode with variable rest frequency has been contributed. The obtained research results can be recommended for use in engineering of low-frequency electromechanical oscillatory complexes in control and vibration test systems.
Vector space as an area of the operation risks characteristics for asynchronous electric machines
Authors: Kurilin S P , Denisov V N , Dli M I , Bobkov V I 
Published: September 2019

Abstract
The article is written in terms of topological theory for the asynchronous electric machine (AEM). During operation the vector space properties of AEM are changed under the influence of operational aging and operational damage. The information about its current properties is used to assess the AEM routine operating condition and the risks of the operational integrity loss. The authors analyze the vector spaces of the stator symmetric three–phase winding and the AEM rotor 9–phase cage. Their common working area is discovered, which serves as a communication channel for a stator and a rotor. A Working area operational testing methodology is described. Absolute and relative measures of risk for AEM operational integrity loss are introduced.