bluuebunny/crossref_metadata_2025_split huggingface dataset:
Automation of agrotechnical assessment of cotton harvesting machines
Authors: Abdazimov A D , Radjabov S S , Omonov N N 
Published: September 2019

Abstract
The method of rapid evaluation of agrotechnical indices of cotton harvesting machines, based on computer processing of digital images of cotton row before and after machine harvesting, is proposed in the paper. The algorithms and software to solve the problem of assessing the quality of cotton harvester performance and to determine the indices of the agricultural background of the cotton field, based on the analysis of the plot images taken from different angles, are presented. The application of the proposed technique allows significant reduction of time and money to test the machines, rapid evaluation of their performance directly during the tests. The software and hardware developed can be used in test automation, in automatic systems for monitoring and controlling the technological processes and modes of operation of agricultural machinery, in particular, cotton harvesting machines.
Constructing the measuring system in industry 4.0 concept
Authors: Yu Andieva E , Ivanov R N 
Published: September 2019

Abstract
The context of global changes in world trends makes the development for the target architecture of the digital platform and the detail of these solutions relevant, this is due to the growing problems for digitizing complex heterogeneous industrial systems. The objective is to create the measurement system in Industry 4.0 concept. The concept should contain the requirements for the measurement system, the procedure for constructing the measuring system, the state of tracking of an underlying asset attributes (oil product) at all stages of its life cycle. The authors proposed the measurement system in Industry 4.0 concept, which is aimed at the optimal construction of the measuring system of the state attributes of the main asset (petroleum product) and the optimal equipment condition. The concept that has been developed can be used in petrochemical processing and oil and gas industry.
Cutting tool wear monitoring using the diagnostic capabilities of modern CNC machines
Authors: Antsev A V , Zhmurin V V , Yanov E S , Dang T H 
Published: September 2019

Abstract
The article discusses the automation of the tool wear monitoring for collecting statistics on the cutting process and taking into account its variability in the design of technological processes for the manufacture of engineering products. It is proposed to use the diagnostic capabilities of modern CNC machines. The main methods of tool wear monitoring are considered: a direct method using optical or electromechanical methods or an indirect method using measurement of the load of drive motors or oscillations of a technological system. The automation of the direct tool wear monitoring method on the Heidenhain TNC 620 CNC system is presented. The change in load on a main motion drive during a tool wear is shown on a practical example. The experimental setup for estimating cutting tool wear by vibration level is proposed.
Economic evaluation of use of heat exchange equipment diagnostic software at diesel hydrotreating unit
Authors: Demin A M , Naumenko A P , Reutova O A , Odinets A I 
Published: September 2019

Abstract
This study focuses on problems related to fouling of heat exchange equipment of diesel hydrotreatment (DHT) processes and diagnostics of heat exchanger condition. Fouling is a critical aspect directly affecting the performance of a heat exchanger. The objective of this study is to determine, using a mathematical model, an optimal timing for cleaning of DHT heat exchange equipment for the removal of fouling. In accordance with results of calculations performed with a mathematical model of a typical DHT unit (L-24/9), condition assessment index for a heat exchanger of the reactor section increases from 1 to 1.37 when shell side fouling factor increases from 0.00003 to 0.00150 (°C·h·m2)/kJ. This results in a decrease of the feed temperature at the vessel outlet, and an increase of costs related to additional fuel consumed by heaters by over RUB 1 million/month. Therefore, activities related to the cleaning of tube bundles of reactor section heat exchangers pay back in full in 1 month, as fuel savings brought about by the cleaning exceeded 12.6%. In order to carry out diagnostics of heat exchange surface fouling and to determine an optimal timing for tube bundle cleaning in order to remove deposits, vessels have to be equipped with transmitters measuring temperatures of all inlet/outlet streams. The use of on-line heat exchanger diagnostics makes it possible to choose an optimal timing of tube bundle cleaning based on comparability of costs related to additional fuel consumption and cleaning costs.
Development and simulation of the pulsed fuzzy controller with low control costs
Authors: Denisova L A , Meshcheryakov V A , Karabtsov R D 
Published: September 2019

Abstract
The article deals with the development and simulation of the control system of water level in the tank as a typical automation object. The level automatic control system (ACS) based on traditional pulse controllers is presented. The system is proposed as well that performs fuzzy logical inference to generate pulsed control action and at the same time implements low-cost control. Comparative analysis of these control systems simulated with MATLAB / Simulink / Fuzzy Logic Toolbox was made. It is shown that the developed fuzzy ACS is more effective than a traditional ACS.
Accuracy of discrete metering devices in relation with the criterion of formed mixture quality assessment
Authors: Evseev A V 
Published: September 2019

Abstract
The article considers the quality indicator (criterion) of the resulting mixture products as a two-parameter function of the metering devices accuracy and the parameter of the final effective mixture (product) application. The first parameter is intermediate and considers the functional characteristics of the single-piece produced an effective dose of a mixture with a given (required) volume or mass. The second parameter reflects the results of the final task to use mixture products or a product in total. Such a technological approach is advisable when it is difficult to describe the process of forming the mixture quality by one parameter, or when taking into account a large number of factors affecting the mixture quality obtained, and the result becomes biased. Then the second parameter is worked into the structure of the criterion for quality mixing assessment, taking into account the ultimate goal of using a mixed product or the product this mixture is included into. In this case a significant number of factors affecting the mixture quality and the effectiveness of its use according to two generalized parameters can be considered. The first typical classical parameter that affects the quality directly during mixing is the accuracy of the constituent component dosing. The second output parameter of the finished product comprehensively describes the efficiency of its use. The final parameters of the mixtures application can be determined experimentally, analyzed, and they, in turn, integrally cover the entire spectrum of many diverse factors affecting the mixture quality and the effectiveness of its use.
Developing an informational model of instrumental examination
Authors: Filatova A , Povoroznyuk A , Gavrylenko S , Fahs M 
Published: September 2019

Abstract
This document presents the development of an informational model of instrumental examination of a patient using the data flow diagrams (DFD). The developed informational model of the instrumental examination is presented in the form of a context diagram, its decomposition, and the decomposition of the subsystems «Registration and analysis of biomedical signals and images with locally concentrated features» and «Diagnostics». Taking into account the proposed information model, UML diagrams of the activity of the biomedical decision support system based on morphological analysis of biomedical signals and images with locally concentrated features, of the module for morphological analysis of an electrocardiogram, and of the module for improving the quality of visualization of biological objects on radiological images based on the IMRI method are developed.
Information control system for dynamic modes of tumble dryer
Authors: Yu Muromtsev D , Gribkov A N , Kurkin I A , Shamkin V N , Belousov O A , Belyaev M P 
Published: September 2019

Abstract
The development of information and control systems that provide solutions to the tasks of energy-saving management of complex technological objects is an urgent problem, since the introduction of such systems in various industries allows not only to reduce energy costs significantly, but also to improve the quality of products. One of the most labor-intensive stages in the development of an information control system is the creation of its algorithmic support, since the models, methods and algorithms being developed must take into account all the specific features of the control object. Modern industrial production, as a rule, includes many energy-intensive technological processes and facilities, among which it is possible to distinguish drying processes, which are widespread. The article deals with the development of algorithmic and software of information and control system by dynamic modes of tumble dryer unit used for distillery dreg drying. While the algorithmic support developing, methods of analysis and synthesis of systems at a set of operating states, the Pontryagin maximum principle, the method of synthesizing variables and graph theory were used. The software modules of the information control system that implement the developed algorithmic software are integrated into the existing production management system. The developed control system allows reducing energy costs in dynamic modes of drying processes by 3-10%.
Management the paper printing properties by methods of factor analysis
Authors: Novoselskaya O A , Kolesnikov V L , Penkin A A , Solov’eva T V , Kashin A N , Nagornova I V , Varepo L G 
Published: September 2019

Abstract
The article deals with the actual problem of managing the paper printing properties using factor analysis methods. The analysis of the stone debris method allowed us to prove the combination of data in three ways: the interaction of the ink with the paper surface, which controls the optical density of the print, the value of dot gain; structural properties of the surface, which determine the effusing ability of the paper, printing slip; features of the distribution of the ink layer, which change the parameters of the prints resolution, font resolution threshold, print contrast. The identified factors allowed to simplify the task of rational decision making. As a result of the analysis of a set of technological parameters, i.e. the composition by fiber, filling, surface treatment and mass sizing, production of paper within the improved printing properties was achieved. Changes have been made in the technology of producing uncoated printing paper under the conditions of IUE “Paper Mill” Goznak. The analysis of the quality of management was carried out on the basis of the integral method and made up 92%.
Control of rotational motion of a partially inoperable small spacecraft using fuzzy sets
Authors: Sedelnikov A V , Safronov S L , Khnyreva E S 
Published: September 2019

Abstract
During processing of telemetric information, in particular data on the current from the AIST small satellite (SS) solar panels, in order to control the parameters of rotational motion ambiguous interpretations of primary information have occurred occasionally. The ambiguity was caused by readings from the solar array electric current sensors - significant currents were recorded from two panels located on the opposite sides of the SS. The Sun, however, could only light one of them at a time. In order to resolve this problem, an automated algorithm based on the use of a fuzzy set for controlling the parameters of the small SS rotational motion is proposed the paper. In that approach, the current values from different panels would be included in the set with different values of the membership function. The implementation of presented automated algorithm onboard the SS will not only improve the operating conditions of the target equipment, but also have a backup orientation system, thereby increasing the reliability of the mission.
Universal test-object for monitoring resolution of inkjet printers
Authors: Sysuev I A , Yu Yudenko M , Parshakova S S , Trapeznikova O V , Serkova L B , Bezzateeva E G 
Published: September 2019

AbstractAn inkjet printer is currently one of the most competitive types of a printer in a digital printing market. As in any printing technology, image quality is a key aspect. In this context, the development of evaluation tools, and in particular the tools of fine details reproduction along with color rendering, is relevant. The paper studies methods of assessing the resolution and inkjet printer resolution as well as the interpretation of the obtained parameters depending on the test-objects used to determine specified indicators. The expediency of using the developed test-object containing linear strokes positioned in different ways in the image space to assess the resolution and inkjet printer resolution is shown.
Adaptive formulas of numerical differentiation of functions with large gradients
Authors: Il’in V P , Zadorin A I 
Published: September 2019

Abstract
There are constructed formulas for the numerical differentiation of functions of one variable with large gradients. Formulas are based on the fitting to the singular component responsible for the large gradients of the function. The singular component is considered as a function of the general form. The error estimates of the difference formulas for calculating first and second derivatives are obtained. The results of the calculations are given.
Development and research of the electric drive generalized computer model with pulse-phase regulation of angular speed
Authors: Bubnov A V , Chetverik A N , Chudinov A N , Shpineva V I 
Published: September 2019

Abstract
The article presents the developed generalized computer model of the electric drive with pulse-phase regulation of the angular speed. The model was created on the basis of a pulse frequency-phase detector (PFPD) model with additional functionality, that give a possibility to investigate the most effective ways to control this electric drive, from the point of view of dynamic indicators improving of regulation quality. On the basis of the known methods of phasing and synchronization, the model of precision electric drive was validated. The test showed that the work of the model meets theoretical expectations.
Improving the economic efficiency of heat sources and heating systems
Authors: Gaak V K , Gaak A V , Khamitov R N , Gritsay A S 
Published: September 2019

Abstract
Russia produces more than 41, 000 million Gcal of heat energy annually, of which only 36% is produced in a combined way. The centralized heat supply system also has the potential of increasing efficiency up to 50%. To improve the efficiency of heat energy generation, the article proposed 5 ways to reconstruct enterprises supplying heat to the population and industrial enterprises.
Comparison approximate analytical solution of the nonlinear differential equation of heating with numerical
Authors: Girshin S S , Ya Bigun A , Kropotin O V , Shepelev A O , Tkachenko V A , Petrova E V , Goryunov V N 
Published: September 2019

Abstract
To improve the efficiency of existing networks, special mathematical models for assessing the losses and temperature of conductors in real time can be used, with the climatic factors being taken into account. The approximate analytical solution of the nonlinear differential equation of heating and cooling of the insulated conductor with numerical method simulation of heat transfer is proposed comparison in this work. The solution is based on lowering the degree of temperature of the conductor using the least squares method in the integral form. A positive feature of the proposed solution is its universality. It allows the analysis of overhead conductors both with and without insulation. The developed method is almost as accurate as the calculation of the conductor temperature by numerical methods. The reliability of the heat balance equation of overhead power lines at non-stationary thermal mode developed by this method is confirmed by comparison with the results obtained by the finite elements method.
Increased efficiency of tests of electric machines of various types
Authors: Kharlamov V V , Popov D I 
Published: September 2019

Abstract
The paper describes the issues of operation of electric machines of various types. A wide adoption of asynchronous electric drives in various fields is noted. The relevance of the issue of embedding test complexes at companies conducting repairs, both asynchronous motors and direct current machines with different excitation types, is justified. The importance of the application modern power-saving technologies in the process of repair of electric machines is noted. One such technology is the method of mutual loading. Proposed scheme makes it possible to carry out tests by means of method of mutual loading such as induction motors, and direct-current machines with serial and independent (parallel) excitation. The effect is that the proposed scheme has a much lower cost compared to the total cost of schemes designed for testing of electric machines of the same types.
Analytical Method for Magnetic Field Calculation of Induction Heater for Heat Supply Systems
Authors: Khatsevskiy V F , Khatsevskiy K V , Gonenko T V 
Published: September 2019

Abstract
This paper presents an analysis of the need and technical feasibility of using electric heaters for heat supply systems. The use of induction heating units in the design of individual heating systems is proposed. Electromagnetic systems for the conversion of electrical energy into heat are considered. The heater is made in the form of coaxial cylinders using ferromagnetic cores. The analysis is based on magnetic equivalent circuits. The ways of optimization of the considered devices used for heating liquids in multi-purpose water heaters are formulated.
Verification for the simulation model of submersible electric motor with downhole compensator based on the bench tests results
Authors: Kopyrin V A , Portnyagin A L , Khamitov R N , Deneko M V 
Published: September 2019

AbstractThe bench tests results of submersible electric motor with downhole reactive power compensator are presented in this study. The decrease in the current consumption by 13 % and the increase in the power factor from 0.84 to 0.95 are recorded according to the test results. A simulation model of a submersible electric motor with a downhole reactive power compensator is developed. The data obtained on the simulation model are compared with the bench tests results. It is found that the discrepancy between the calculated and experimental data is less than 10 %. Consequently, the simulation model adequately reflects the electromechanical processes of the real object.
Modernization of acoustic method for the diagnostics of power transformers based on digital signal processing
Authors: Koshekov K T , Belyaev P V , Latypov S I , Savostin A A , Kalantayevskaya N I , Yu Kobenko V , Koshekova B V 
Published: September 2019

Abstract
The technology of modernization of acoustic diagnostics of oil-filled transformers is described by connecting an additional diagnostic unit for analyzing the temporal and statistical characteristics of the measuring signal. The algorithm of the block functioning is based on the application of identification measurements technologies and digital processing of diagnostic signals, classification of parameters according to designated signal classes and conclusion of the object state with the name. The results of studies of measuring signal images of transformer diagnostics operated on the basis of «SEVKAZENERGO» JSC are presented.
Improvement of a single-phase rectifier for manual arc welding by stick electrode for thin-sheet constructions
Authors: Mukhin V F , Eremin E N 
Published: September 2019

Abstract
The article shows the results of work to improve the single-phase rectifier for manual arc welding of thin-sheet structures. An additional unit is proposed, which is an electronic switch that includes a control circuit for the rectifier thyristors for two half-periods with a constant frequency, a multiple of the number of half-periods of the rectified current. At the same time, the selection of mode parameters for manual arc welding with a coated electrode allows for a stable quasistationary process of melting and transfer of the electrode metal. The use of an additional unit provides welding thin-sheet structures without reducing the diameter of the coated electrode, by analogy with the known processes for welding in protective gas.
The Means of Electromagnetic Compatibility Improvement for DC current consumer in Three-Phase Mains
Authors: Olhovskiy V Y , Myateg T V , Atamanova O S 
Published: September 2019

Abstract
The article is devoted to principle of creating a technical means for improving the electromagnetic compatibility of three-phase rectifiers in AC supply networks. The principle of the scheme constructing this technical device is described and the calculation models for its implementation are presented on the basis of transformer converters of the phase number and the windings connections as a sliding triangle. This solution allows to implement a controlled mode of increased equivalent number of pulses of rectification and provide high energy performance in the supply network by regulating the phase shifts of three-phase voltages feeding three-phase rectifiers, which is confirmed by a series of model experiments.
Feasible Ratio Determination of the Thermal Oil Equipment Waste-Heat Recovery
Authors: Paramonov A M , Rezanov E M 
Published: September 2019

Abstract
The applicability of the thermal oil equipment flue gases thermal energy recovery relates to heating the air amount required for the fuel burning, and technical and economic feasibility. The paper objective is to define the regenerative system air heating temperature optimal value and to study the temperature impact on the heat power unit efficiency. The problem solution is air heating temperature optimal value. calculation algorithm. The methods of the complex heat exchange mathematical modelling, optimization problem numerical solution, non-linear programming, and feasibility study were used in the research carried out. The study results of the temperature influence of heating the air required for fuel combustion on the thermal oil equipment technical and economic efficiency are presented.
Research of the acceleration dynamics of the horizontal separation centrifuge for drilling mud cleaning
Authors: Ryndin I A , Brendakov V N , Kladiev S N 
Published: September 2019

Abstract
This article presents a method for assessing the technical condition of a horizontal centrifugal centrifuge using vibration analysis methods. The study has been conducted on a centrifuge’s single-mass rotor model with a rigid and flexible shaft and flexible supports. Based on the results of the research recommendations for assessing the compliance of the bearings and deflection of the rotor shaft, the location of the natural frequency in the frequency spectrum of oscillations have been identified. An approach to damping vibrational oscillations of a rotor system using controlled acceleration of the rotor by means of a frequency-controlled electric drive is proposed.