bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling the process of interaction of porous titanium adsorbent with a multi -component gas environment
Authors: Bataronov I L , Selivanov V F , Peshkov V V , Semenozhenkov M V , Korchagin I B
Published: June 2019

A model of mass transfer of two-component gas through an absorbing porous body was developed. The mathematical model is a problem of Stefan problem type. Analytical solutions of the model in the quasi-stationary regime were obtained. For the transfer of nitrogen-oxygen mixture by titanium porous adsorbent, the dependences of the gas penetration depth and the mass absorbed by the adsorbent on the temperature, the pressure of the gas mixture and the diameter of the porous material particles were calculated. It was found that the size of the nitrogen absorption area was several times smaller than the size of the oxygen absorption area. Also, the mass of the absorbed nitrogen was half the mass of the absorbed oxygen. This is due to the remoteness of the nitrogen absorption area from the outer surface of the titanium adsorbent.
The task of determining the actual routes in the traffic control system using satellite navigation
Authors: Fadeev A I
Published: June 2019

The paper deals with the task of determining the actual traffic routes based on the data of the global satellite navigation system during the dispatching control of road transport. The actual route through the transport network is an ordered set of traffic control points passed. The fixation of control points of the route in the processing of satellite navigation data is carried out by means of two radii: the radius of detection and the radius of positioning. The paper proposes a method for processing satellite navigation data, consisting of two stages: first, pre-processing and, second, calculating the parameters of the system states defined by the dispatch control tasks. The state of the system controlled by the traffic dispatcher system is described.
Wear resistance of composite electrochemical coatings containing polyepoxides
Authors: Kisel J E , Guryanovl G V , Kaminin V V
Published: June 2019

The expediency of polymer-metal coatings reinforced with polyepoxides use for increasing the wear resistance of machine parts is described. The composition and structure of composite coatings providing the highest wear resistance are presented in an optimized way.
Rolling contact fatigue of hot-deformed powder steels with calcium microadditives
Authors: Dorofeyev V Y , Sviridova A N , Berezhnoy Y M , Bessarabov E N , Kochkarova K S , Tamadaev V G
Published: June 2019

Fatigue damage of the surface layers of metal is a characteristic cause of failure of rolling bearings, gears and a number of other machine parts operating under cyclically repeated contact loads. Resistivity to the development of contact damage of steels obtained by hot forging porous blanks is determined by the presence of cohesive bonds between the particles of the base powder, as well as by the presence of non-metallic inclusions and grain size. The possibility of increasing the contact endurance of hot-deformed powder steels due to micro-doping with calcium has been studied. Iron powders with various content of impurities, as well as atomized powder of low-alloyed chromium-molybdenum steel were used as the basis for preparation of the blends. Calcium was doped as calcium carbonate. Mixing was performed in a planetary centrifugal mill. Samples for mechanical testing were obtained by hot forging porous blanks. After hot forging the samples were carburized to compensate for the loss of carbon in the surface layer. It has been established that doping calcium microadditives is favourable for increasing the energy content of damage under the conditions of exposure to contact-fatigue and bending loads. This is due to a decrease in the size of austenite grains at the expense of inhibition of their growth during the adsorption of calcium at the grain boundaries. Microalloying with calcium changes the localization of seats of contact fatigue damage. In samples-witnesses without microadditives of calcium cracks originate near non-metallic inclusions of sharp-angled shape in the near-surface zone. In microalloyed specimens the cracks are located in the subsurface layer in the area of Hertz maximum shear stresses.
Monopulse lidar Earth surface sounding method
Authors: Belov M L , Belov A M , Gorodnichev V A , Alkov S V
Published: June 2019

The paper studies the monopulse lidar method capabilities for sounding the reflection coefficient of the earth surface. The mathematical modelling shows that the monopulse lidar method allows us to reconstruct spatial distribution of the reflection coefficient under measurement noise in a good-sized angular coverage of lidar. The most efficient for reconstruction of the reflection coefficients based on the measurement data (in terms of both the minimum errors and the computation time) are the hybrid particle swarm algorithm and simulated annealing and the ant colony algorithm. The monopulse lidar monitoring method using the hybrid particle swarm algorithm and simulated annealing and the ant colony algorithm allows (with an error of estimating expansion coefficients from units of per cent to 10 - 40% under measurement noise of 3%) adequate reconstruction of spatial distribution of the reflection coefficient on the earth surface under conditions of strongly and nonlinearly changeable reflection coefficient.
Engineering method for assessing the strength of reinforced concrete beams
Authors: Snezhkina O V
Published: June 2019

A calculation method is proposed that combines two existing methods for calculating the strength of reinforced concrete beams. The author of the article considers the possibility of presenting the work of a reinforced concrete beam in the form of an arch with a curvilinear shape with a puff, which is a statically definable system. The operation of a reinforced concrete beam with a relative span of a slice from 1 to 3 is modeled as an arched system with a horizontal stretched reinforcing belt and a compressed concrete strip of curvilinear shape. The purpose of the tightening in a beam with an average relative cut span is to cancel the bending moment inherent in a simple beam. Thus, this model (arch with tightening) most fully reflects the work of reinforced concrete beams with an average relative cut span compared to the model adopted in regulatory documents.
Parallel implementation of the greedy heuristic clustering algorithms
Authors: Kazakovtsev L A , Rozhnov I P , Popov E A , Karaseva M V , Stupina A A
Published: June 2019

Authors propose parallel greedy heuristic k-means clustering algorithms for implementation on the graphical processing units (GPU) for solving large-scale problems. The computational experiments illustrate high performance of the GPUs in comparison with running the greedy heuristic algorithms on a central processor unit which is especially significant in the case of big datasets and bug numbers of clusters. The efficiency of the greedy heuristic algorithms in comparison with the standard k-means algorithm remains.
The comparison of several approaches to the interpolation of a trajectory of a navigation satellite
Authors: Karepova E D , Kornienko V S
Published: June 2019

Since a satellite orbit is quite smooth, polynomial techniques can be widely used for the interpolation of satellite positions in real-time applications. The paper is devoted to the comparison of different approaches to the polynomial interpolation of the trajectory of a satellite using available data. All approaches have been examined for test and actual data.
Atomic structure and electronic properties of binary graphane: Ab initio calculations
Authors: Greshnyakov V A , Belenkov E A
Published: June 2019

In this work, ab initio studies of a novel two-dimensional diamond-like nanostructure consisting of two polymerized graphenes are carried out. This nanostructure called binary graphane has a two-dimensional hexagonal lattice with the parameter a = 0.2737 nm. The surface density, cohesive energy and indirect band gap of binary graphane are 0.123 μg/cm2, 6.64 eV/atom and 2.83 eV, respectively. It is also established that this layer must be stable up to 200 K.
The effect of titanium dioxide coated carbon fibers on the aluminum alloy matrix composite strength
Authors: Gomzin A I , Gallyamova R F , Galyshev S N , Paramonov R M , Zaripov N G , Musin F F
Published: June 2019

In this work the possibility of using TiO2 coating as a barrier between carbon fiber and an aluminum matrix in a Cf/Al composite was studied. Specimens of a composite with a matrix of Al-6Mg alloy were obtained by the method of liquid-phase infiltration under pressure. As a reinforcing component was used continuous uncoated and titanium dioxide coated carbon fibers. TiO2 coating on carbon fiber preform were prepared by sol–gel method. The protective properties of the coating and the mechanical properties of the composite at three-point bending were evaluated. Microstructural and fractographic analyzes were performed. It was established that the barrier coating made it possible to increase the strength of the composite more than 2.5 times from 250 MPa to 660 MPa.
The study of the aircraft functional appearance design
Authors: Khakimov A V , Nechaev V A , Kostishin M O , Zharinov O O
Published: June 2019

The paper investigated the technical specification as the main document describing the major functions performed by the aircraft. The functional appearance of the on-board equipment complex is revealed in the first approximation. A range of tasks related only to solving problems of navigation and aircraft control is highlighted. The possibility of decomposition of functions depending on their degree of complexity is presented. The process of selecting existing systems to perform the required functions is investigated. The possibility of automating the process of designing a functional appearance based on existing systems is described. The system selection process has been formalized to enable the use of computer-aided design systems in order to shorten the design of the functional appearance of the upper level and minimize the functional inadequacy or redundancy of the complex.
Resonance of electrical circuit with periodical time-variable element
Authors: Biryuk N D , Krivtsov A Yu
Published: June 2019

Resonance theory of usual oscillatory circuit is expanded in case of time-variable circuit of general aspect, in which all elements change with time in accordance with continuous periodical functions of the same period. There exists potential possibility of dissemination it to nonlinear circuit by means of principle of linear introduction.
The results of water droplet erosion tests of ion-plasma coatings formed on titanium Ti-6Al-4V alloy samples manufactured by using 3D-printing and traditional technological process
Authors: Mednikov Alexey F , Tkhabisimov Alexander B , Zilova Olga S , Burmistrov Andrey A , Sidorov Sergey V
Published: June 2019

The paper presents the results of erosion tests and metallographic studies of titanium alloy samples manufactured by using 3D printing and traditional technological methods without coatings and with various types of ion-plasma coatings. As a result of the tests, the kinetic curves of erosion wear of the studied alloys and coatings were obtained, showing that the best type among those considered is a DLC (Diamond Like Carbon) coating, which increases the relative erosion resistance of uncoated samples in incubation period duration of the water droplet erosion process by not less than in 1.8 times.
Material evaporation with ultrashort laser exposure
Authors: Latypov I I , Bigaeva L A , Chudinov V V , Gilev A Y , Gaisin F R
Published: June 2019

The task is to analyse the temperature distribution in the material under ultrashort laser irradiation. The mathematical model is built on the basis of a two-temperature model describing transition phenomena in a nonequilibrium electron gas and lattice with an ultrashort laser effect on the material. The vaporized body is considered as a thin plate and the problem is formulated as a system of one-dimensional boundary-value problems of the heat equation written for the electron and lattice components. The initial problem is reduced to solving a system of singularly perturbed boundary problems of the heat equation with nonlinear boundary conditions on moving boundaries, an approximate solution of which is obtained in the form of an asymptotic expansion of the solution in the Poincaré sense in powers of small parameters.
Automated testing and fault diagnosis of the microcontroller system
Authors: Pankov D A , Denisova L A
Published: June 2019

The article deals with the problem systems automated testing of microcontrollers. A system architecture proposed for fault diagnosis and determining the consequences of device failures. Highlighted separately intermittent failure. The issue of integrating software and hardware failure simulation tools into the testing architecture investigated. Model studies of the testing system performed and conducted diagnostics of simulated faults. The efficiency technology of automated testing confirmed with simulation known failures types (injection) for the components of the performed microcontroller device is proposed.
Aerospace registration of hydrocarbon degassing
Authors: Feodorov A B , Sviridov L I , Afanasov V I , Spirin T S , Bushkina A V
Published: June 2019

An active geological study of promising areas for oil and gas is being conducted in areas where geological signs of associated hydrocarbon manifestations are detected. The development of deposits contributes to a developed system of cracks in the surrounding rocks. Fluid supply to fractured reservoirs occurs through the channels of deep faults. Prolonged winter freezing of rocks inhibits the release of gases into the Earth’s atmosphere. The accumulation of hydrocarbon gases in the near-surface cavities creates risks of gas emissions, fires and explosions. Prediction and rapid diagnosis of gas emissions is based on planetary observations from satellites of ozone concentration in the atmosphere. V.L. Syvorotkin experimentally showed a causal relationship between hydrogen degassing and the formation of “Ozone Holes”. Satellite measurements of ozone concentrations in the atmosphere allow daily monitoring of hydrogen degassing sites from the Earth’s surface. The state of the soil surface in the areas of deep degassing is determined by secondary features. These are griffins, soil emissions, ring-shaped structures of gray soil (falling fertility), and hummocks of specific morphology. Such hummocks are formed as a result of the vital activity of “Hydrogen bacteria” and are markers of gas emission on the ground. In combination, methane with hydrogen is capable of detonation at concentrations ranging from 1%. The danger increases in the presence of iron-containing minerals that can catalyze the oxidation reaction. Preventive measures are proposed to prevent the sudden release of flammable gases: by drilling a network of control waste wells with a depth of 100 to 200 meters. Such wells are similar to ventilation wells in areas of coal mining.
Investigation of elastic deformations of cured CFRP structures with embedded cellular metallic elements subjected to a microwave electromagnetic field
Authors: Zlobina I V
Published: June 2019

Based on the analysis of trends in the development of aviation equipment for various purposes, the expansion of the use in its bearing structures of polymer composite materials, reinforced with carbon fibres with a combined structure containing distributed in the volume of metal honeycomb fillers is shown. This increases the anisotropy of the physical and mechanical properties of such structures of different chemical composition and properties of materials, which makes it difficult to manoeuvre the aircraft due to the different stability of metals and composites to multidirectional dynamic bending and shear loads. It is stated that the problem of increasing the strength characteristics of PCM can be solved by their quasi-structuring in the microwave electromagnetic field, but the influence of this factor on complex structures containing metal regular elements needs further study. Experimental studies of the effect of short-term exposure to microwave electromagnetic field with a frequency of 2450 MHz on the modulus of material elasticity, which is a structure of two plates of carbon fibre with aluminium cellular elements located between them. It was found that compared with the control samples, the samples exposed to microwave electromagnetic field have an increased modulus of elasticity by 31.8%. Limit shear stresses also increase by 29%. Thus, the treatment of formed and cured polymer composite materials with built-in cellular metal structures in the microwave electromagnetic field is possible and allows to perform hardening quasi-structuring of such products and increase their performance parameters.
Kinematics and arrangement of an active sidestick
Authors: Samsonovich S L , Rozhnin N B , Larin A P , Makarin M A
Published: June 2019

The article is about design of the active aircraft control sidestick. The disadvantage of the known frame constructions, apart from the large dimensions, is the difference in the dynamic characteristics of the channels when using the same actuators, because the mass of a frame mounted actuator is the load for a fixed base mounted actuator. As a result the kinematic scheme of an active control sidestick which don’t use a frame is offered. The frameless scheme contains two identical actuators mounted on the fixed base, at that the interference of channels is excluded. The derivation of the actuator’s gear ratio is given. It is shown that this dependence between the rotation angle of the actuator output shaft and the handgrip deflection angle is of a sinusoidal type and that it is close to linear in the range of the handgrip operating angle.
Automated complex for stabilized straightening of low-stiff cylindrical parts
Authors: Zaides Semen , Quang Le Hong , Bobrovskij Nikolai , Melnikov Pavel
Published: June 2019

The analysis of problems and tasks in the field of technology editing. A block diagram of an automated complex for stabilized straightening of low-stiff cylindrical parts by cross-rolling with smooth plates is presented. A block diagram of a software package has been proposed, the main function of which is to automate the straightening of cross-facing with smooth plates, as well as to provide all the technological parameters of the process. To improve the productivity of editing and automation of operations, new automated devices for editing low-stiff rigid cylindrical parts such as shafts and axles have been designed.
Calculating electric power generated by 3U CubeSat’s photoconverters depending the orbit and orientation parameters
Authors: Gorev V N , Prokopiev V Yu , Prokopiev Yu M , Sinitsina L D , Sidorchuk A A
Published: June 2019

The paper describes a computational program developed in MatLab Simulink, that performs calculation of electric power generated by photoconverters for various missions of nanosatellites in low Earth orbit (LEO). Electric power generated by nanosatellite’s solar panels was estimated for polar LEO of 450 km altitude for two versions of the satellite’s static orientation. The results show how orientation maneuver at the Earth’s surface point affects power generated by the satellite’s solar panels.
Resource allocation models at resource quantity dependence on demand
Authors: Kalach A V , Rossikhina L V , Govorin E B , Golovkin R B , Shumov P V
Published: June 2019

The paper describes the reverse priority mechanism for a resource allocation problem under the condition when the quantity of resource allocated depends on demand, i.e. on the sum of consumers’ requests. A particular case of the problem for two consumers and a general case for more than two consumers with equal and different priorities are discussed. The linear dependence of the quantity of resource allocated on demand is considered for the particular and general cases. It has been obtained that the use of linear dependence is appropriate in the case with two consumers, when a certain predictable strategy of consumer behavior can be found. For the higher number of consumers, it is feasible to use this dependence, when there is a consumer with a significantly higher priority as compared to the others. Otherwise, the consumers’ behavior becomes hard to predict. The piecewise-constant dependence of the quantity of resource allocated on demand has been studied for the particular and general cases. The overall conclusion has been obtained and has stated that the consumers’ behavior becomes hard to predict, including surges of estimates, when the reverse priority mechanism is used in cases of resource quantity dependence on demand.
Characteristics of the deformed zone around Vickers indentations in metals
Authors: Matyunin V M , Abusaif Nuha , Marchenkov A Yu
Published: June 2019

The stress and plastic strain distributions around pyramidal indenter in steel 10 has been investigated by exploring the Vickers hardness of carefully prepared median plane sections through indentations. Experimental results showed that, the maximum strain is observed at a certain depth below the indentation surface inside the hydrostatic compression zone. The minimum permissible ratio between the coating thickness and the indentation depth, which excludes the influence of the substrate on the indentations results obtained by Vickers indenter, is substantiated. The shape and dimensions of plastic deformation zones around Vickers indentations were determined. As a result, between the indentation volume and the deformation zone volume established directly proportional relationship.
Optimization of gear ratio of variable mechanical gearboxes
Authors: Ulanov A G , Troyanovskaya I P
Published: June 2019

The effectiveness of the coordination process of the “engine-transmission” system is largely determined by the functional purpose of the car being designed. The solution to this problem is possible by choosing the optimal transmission parameters. Using a continuously variable transmission will make this process manageable. However, optimization is always performed according to a certain criterion. You can use its dynamic performance and fuel economy as an optimization criterion. The article presents a mathematical model for determining the current gear ratios of a continuously variable transmission of a vehicle depending on its mode of movement. The dependence of the transmission ratio of the vehicle on speed allowed us to find the mode of movement of the car with the minimum acceleration time. The dependence of the transmission ratio of the vehicle on the engine speed allowed us to find the driving mode with minimal fuel consumption. The recommendations received by the authors on the choice of transmission ratios can be used in the design of the control system. Automation of control will allow optimizing the pattern of change in the gear ratio of a continuously variable transmission depending on the mode of movement of the vehicle.
Vibration calculation of the plate knives in refining machines
Authors: Vikharev S N
Published: June 2019

The subject of research is the method of vibration calculation of the plate knives. The study of the shapes and frequencies of free oscillations of knives was carried out using the finite element method and analytics. The error between theoretical and experimental studies does not exceed 9%. A diagram is proposed for determining the resonant modes of the plate knives. The proposed measures to reduce oscillations and dynamic stresses of the plate knives are as follows: change of the frequency of the rotor rotation; change of the length of the knives; change of the crossing angle of the rotor and stator knives; the choice of material for knives; use of damping devices in the plate design. The plate with interchangeable working elements and a headset with damping devices of knives are proposed and protected by patents for useful models. The developed method of vibration calculation can be used in other industries, for example, in mining and metallurgical industries.
Development of automated monitoring safety system of the forklift DP 3510
Authors: Kostarev S N , Sidorova K A , Tatarnikova N A , Kochetova O V
Published: June 2019

In this article, the problem of ensuring the safe operation of the forklift truck is analyzed, as well as the development of an automated monitoring system for preventing the occurrence of accidents in the territory of warehouses, enterprises and organizations using special transportation equipment. A model of the DLE system has been developed: Truck loader driver (D), Auto-loader (L), Environment (E). Hazard sources during loading operations are identified. Based on the analysis of the necessary and sufficient conditions for the transition of system states, an instrumental security assessment model has been developed that is used in the synthesis of a finite state machine. A ladder circuit and a forklift driver’s console have been developed, implemented on the Omron software and hardware system. The developed onboard computer for the forklift truck takes into account the load of the mechanisms when lifting the load and, if it is necessary, generates an alarm or blocking mechanisms in a dangerous situation.
Optimization methodology of product technical characteristics in the production of household appliances
Authors: Shanta M V , Semenova E G , Smirnova M S
Published: June 2019

The paper presents optimization methodology of product technical characteristics, which was approbated by optimization of conductivity of water on washing machine production factory. This process ensures effectiveness of rinsing process during washing cycle and reduction of chemical ingredients after rinsing. Main factors, which influence conductivity function, were defined. The factors are analysed to define dependence of investigated values from each other. Developed linear multiple regression model, quality of developed model are checked. Due to usage of the developed methodology at washing machine factory quantity of chemical ingredients after rinsing process was reduced; as a result, norms of GOST standard 60456-2011 were reached.
Improving the efficiency of cooling tower sprinklers
Authors: Boev E V
Published: June 2019

Observance of temperature condition of any production is carried out by means of the systems of reverse water supply equipped most often with fans and cooling towers. In this article, the design of the drop and film sprinkler of coolers and results of a research of efficiency of its work is described.
Development of the chemical reactor V-star for continuous flow reactions
Authors: Bamatov Ibragim M , Rumyantsev Evgeniy V , Bamatov Dzhabrail M
Published: June 2019

This article illustrates the new modeled reactor, that allows to change the process of the flow chemical reaction from batch tank to the continuous mode. The stage efficiency form 1 (ideal plug flow, IPF) to 50 stages in a continuous stirrer tank reactor (CSTR) was plotted and illustrated graphically. Moreover, the descriptions and possibilities of the new reactor (V-star) such as: temperature control, numbers of stages, movement-speed of the reactors platform are also shown in this paper work.
Dynamic calculation of knife refining machines together with a supporting structure
Authors: Vikharev S N
Published: June 2019

The research subject is the method of dynamic calculation of knife refining machines together with the supporting structure. The design of refiners and supporting structures is carried out by various organizations. The knife refining machine and the supporting structure are a single dynamic system and, therefore, they must be calculated together. The forces exciting the oscillations of the refiners are investigated. Dynamic and mathematical models of the system are developed. The proposed method of dynamic calculation has been successfully tested on TF-52 and TWIN-66 refiners by OJSC “Solikamskbumprom”. The developed method of dynamic calculation can be used in other industries, such as metallurgical and mining.
Structural features of automated lean production planning system database
Authors: Skorniakova E A , Vasyukov V M , Sulaberidze V Sh , Yastrebov A P
Published: June 2019

Necessity of creation of special automated systems based on lean manufacturing principles for efficient recourse usage and maximum customer-orientation was proved. Process of one of the planning system key elements such as structure of database creation is described. Importance of mixed development, includes technical task with description of subject area and problematics of solvable task and also variant of database structure, is explained. Provided initial and final structures of database after all stages of testing and adjustment with description of tables contents. Quantity of tables was increased from 9 to 25 in final version, this can be explained by the point that structure created only by planning specialist doesn’t include all specifics of process interpretation in automated system, and the fact is that iterative development is very important for such automation of processes. Provided research of methods that can increase speed of data processing was provided - specific type of key and algorithmic filling of data array by typical values.
Simulation of operational characteristics of the water-ring vacuum pumps
Authors: Naumov V A , Velikanov N L
Published: June 2019

The article presents the results of calculations of characteristics for water-ring pumps. Water-ring pumps are energy-saving and high-performance equipment, often used for pumping explosive gases or when working with flammable environ-ment. The design of water-ring vacuum pumps and compressors of many manufacturers is the same. The disadvantage of this type of compressors is their low overall efficiency. The algorithm and examples of determining the characteristics of compressor machines used in modern vacuum installations are considered. Based on the results of processing of experimental data of Erstevak ELRS models, empirical dependences and power consumption parameters are obtained. The isothermal efficiency of the liquid ring pump over the suction pressure has been normalized. Characteristics of isothermal power and efficiency are built. The dependence of the highest isothermal efficiency of the water ring pump on the performance (pumping speed) is obtained.
Construction of mathematical model of training and professional development of personnel support of additive production of REA
Authors: Chabanenko A V , Kurlov A V
Published: June 2019

The article presents a model of training and advanced training of personnel support of additive production of electronic equipment components as a factor affecting the final quality of the product, which is a synergetic effect of human-machine interaction.
Testing experimental samples of solid state drives
Authors: Ekimov K A , Podryadchikov S F , Putrolaynen V V , Belyaev M A , Maslennikov E I
Published: June 2019

The paper presents the results of electrical and functional testing of 160 experimental samples of solid-state drives with capacities ranging from 256 to 1024 GB, assembled using 4 types of NAND-memory chips. As a result of testing, read and write speeds of SSD were measured in sequential and random modes. The maximum read and write speeds in the sequential mode were 540 and 410 MB/s, and in the random mode, 72000 and 68000 IOPS. When measuring disks of the same type, a relative speed variation was observed, which was significantly greater with write operations (3.7%) than with read operations (0.45%). It was also found that the write and read speeds were limited by the performance of the disk controller.
About the development of a technological complex with a manipulator for an unmanned underwater vehicle
Authors: Gusev A L , Golovina E S
Published: June 2019

This paper presents solution of underwater manipulator tasks providing interaction with environment to perform tasks. Underwater manipulator is a part of unmanned underwater vehicle used to perform operations on ordered depth. Technological system based on standard and available elements is explored. Main research avenue is a remote control of modular system elements using Programmable Logic Controller. This paper describes the design and implementation of algorithms for controlling the manipulator or its hardware platform. Software architecture to control using standard programming tools is shown. Additionally, compute resources necessity depending on control system structure has been reviewed.
Software development for Industry 4.0 neuroprocessor industrial automation systems
Authors: Romanchuk V A
Published: June 2019

The paper discusses the issues and problems of applying multiprocessor computing systems in Industry 4.0 industrial automation systems. The examples of tasks that are effectively solved with their help are shown: control and diagnostics tasks, rolling production tasks, sign identification problems. The developed software is considered in the form of the NP Studio software platform for the development, operation and optimization of industrial automation systems. The block diagram of the software platform and the functionality of each of the subsystems are described. An example of using the neuroprocessor system for the implementation of the hexapod control task is shown.
Analysis of the influence of the gear pair materials on the mass, dimensions and cost of a single stage cylindrical reducer for mass production
Authors: Petrakova Ekaterina A , Parshina Svetlana A , Tran Dinh Van , Azizi Muhammad-Fahim
Published: June 2019

A study of single-stage reducers, made in a horizontal pattern, having the same technical characteristics and a similar configuration, but differing in the material hardness of the gear pair parts has been carried out. The design of reducers, the determination of the mass-dimensional parameters of the parts and the entire product assembly was carried out in one of the CAD programs of three-dimensional modelling. For identically designed reducers, a comparison of the mass and dimensions of all the parts was made. The data on the total masses and overall dimensions of the assembly items, as well as the results of the heat treatment time of gear wheels and toothed wheels are given. The parts dimensions of which undergo the greatest changes in size due to the replacement of gear and toothed wheel materials are identified. The paper gives the calculation of the machining time and the calculation of the cost for the production of a batch of 10 thousand pieces per unit of production, taking into account the cost of raw materials and materials, heat treatment, energy and technical needs, wages and social deductions, repair and maintenance of equipment, general production and selling expenses for these parts. As a result, data were obtained about the difference in the cost of production of a batch of reducers under study.
One-membrane drive with autonomous strut rod camera
Authors: Sysoev S N , Bakutov A V , Dang H L , Andreev A V
Published: June 2019

The paper is devoted to the research of pneumatic membrane probes containing membrane based rod that runs a function of the hard centre. They are widely used in engineering as shut-off and control apparatus machine, chemical, oil gas and other industries. The influence of the rod support parameters on the stiffness characteristic of the rod stroke from the payload is analysed. The operation methods of membrane drives are considered. The possibility of enhancing their efficiency by using the effective membrane area is shown. The authors applied a method in which the effective area of the membrane is used during the drive operation by adjusting the bending stiffness of the support. A device has been developed in which the support is made in the form of a limiter for the flexural deformation of a membrane and an autonomous elastic shell forming a hermetic chamber connected to an overpressure pneumoline. Field studies of a single-membrane pneumatic drive were carried out on a laboratory setup. Studies have confirmed the industrial applicability and effectiveness of the developed technical solutions. In a drive with a membrane made of IPR-1266 rubber, 1 mm thick, 105 mm in diameter, and a camera with a diameter of 62 mm, its stiffness characteristic significantly increases. Compared with the traditional membrane drive, this characteristic is enhanced by more than three times.
Forecast technique for roller bearing life as random value
Authors: Velikanov V S , Dyorina N V , Panfilova O R , Antropova L I , Zalavina T Y
Published: June 2019

The article deals with the use of the linearization method to take into account the stochastic nature of factors affecting the life of bearings. In addition, we should pay attention to such factors as the degree of contamination and viscosity of the lubricant, as well as the properties of the material from which the bearing parts are made. The developed method allows estimating the degree of influence of these factors on the bearing life. In order to adapt the graphical dependencies to the physic-probabilistic approach, Lagrange interpolation polynomial is used, which allows obtaining the calculated dependencies and automate the resource calculation. The linearization method makes it possible, if necessary, to simplify the mathematical model, neglecting the arguments that have minimal impact on the calculation result.
Research of wear resistance of the composite coverings applied by a method of electric contact sintering
Authors: Markov V A , Sokolova V A , Rzhavtsev A A , Voinash S A
Published: June 2019

Intensity of wear process is one of the basic characteristics defining durability of mobile connections. To study wear resistance of a «roller pin», conditions close to real conditions of operation of the given unit should be recreated. Axes of running gears of wood machinery are subject to wearing due to abrasive friction. Friction is one of the most widespread processes; it accompanies any relative movements of adjoining bodies or their parts. The purpose of the present research is the substantiation of application of composite coverings for enhancement of running gear unit durability.
Methodology of using fatigue gauges to monitor machinery load
Authors: Tyutrin S G
Published: June 2019

The problem of preventing fatigue damage of machinery critical parts by means of their control with the help of fatigue gauges is considered. The principles of operation and the method of synthesis of fatigue gauges with high sensitivity are described. The technique and results of the stand experiment on the determination of stresses equivalent to the damaging effect of the operating stress spectrum of the vehicle frame are presented using fatigue gauges made of tin foil. It is noted that the monitoring of the parameters of the fatigue gauges can be performed automatically, including using vision devices.
Modelling of compensation process for the deviations of ship pipeline routes
Authors: Ngo G V
Published: June 2019

In this paper, the solutions for problems related to increase in manufacturability of pipelines at a design stage were stated. The authors considered conditions and possibilities for compensating deviations of the pipeline route and adjacent structures during pipe installation. The task was set to produce a fitting pipe according to the design information without specifying dimensions and configuration in place on the ship. The fitting pipe was manufactured according to the design information with the assignment of technical allowances at the end sections in certain directions, if necessary. Moreover, the authors presented a method for compensating deviations in the routes of ship pipelines using rotations of pipe parallel section pairs, and developed the procedure for compensation and installation of pipelines from prefabricated pipes manufactured according to design information without specifying dimensions on the ship. Mathematical and graphic modeling of deviation compensation in pipelines during their installation was performed.
Structural-dynamic approach to the formalization of information exchange objects under Integrated Information Environment
Authors: Drozd O V , Russkikh P A , Chentsov S V , Kapulin D V
Published: June 2019

The structural-dynamic approach to the formalization of the information exchange objects structure and behavior under Integrated Information Environment is considered: electronic design document and a typical design object. For the objects formalization and modeling the basic of subject-oriented ontologies, automata and set theory were used. The subject area (scope) and the electronic design document structure is formalized in ontology. Graphic representation of the information exchange objects life cycle performed as colored oriented nets. The ontological approach and colored networks allows revealing the relationship between structure and behavior of information objects, avoiding information inconsistency of complex multiply connected structures. The proposed approach provides an opportunity to take into attention the entirety of electronic design documents submission and design objects, which is difficult to ensure using alternative modeling methods.
Analysis of the frame design of the subcompact racing car of go-kart class
Authors: Bobrowskii A V , Zotov A V , Rastorguev D A , Gorokhova D A , Ugarova L A
Published: June 2019

The article presents the design features of subcompact small-capacity racing car of kart class. The issues of the strength of the supporting structure are considered. The main strength characteristics of the material AISI-1020 are presented, which was used in the design of the frame chassis. A conceptual block diagram of a methodology for designing a supporting structure model using engineering analysis methods (finite element modeling) is presented. The analysis of structural strength using ANSYS software is carried out. The rode type finite element model of the frame is presented. The directions of application and values of the resulting loads are determined taking into account the overloads experienced by the pilot in collisions. The boundary conditions and the deformation pattern of the frame structure when applying the deforming forces to the front beam along the longitudinal axis of the car, outside the longitudinal axis of the car and on the lateral truss of the car frame are given. The engineering analysis data show a good coincidence of the modeling results with the experimental data.
The research into compensatory possibilities of straight pipes in pipeline routes with cambers
Authors: Ngo G V , Tham B C
Published: June 2019

In this paper, we studied the current state of the design, manufacture and installation of marine pipelines, and considered the problem of manufacturability improvement marine systems pipelines at the stage of designing, providing the possibility of manufacturing the pipes without taking actual sizes and its solution within the framework of the research of the interrelation of configuration and compensation possibilities of the pipeline routes. The problem of compensatory possibilities of straight pipes on pipeline routes with a camber or with two and more cambers was examined. It was established that at simultaneous rotation of two different pipes with parallel ends, the end point moves along the surface (if the axes of these pipes are not parallel); at rotation of three or more pipes with three non-coplanar axes (i.e. not lying in the same plane) the compensation range is a three-dimensional body. The method of calculating the possible compensation area was improved in order to reduce the amount of computation. As part of the hypothesis about the relationship of the configuration and compensatory capabilities of the design pipeline routing, the idea of using straight pipes to move the pipeline route in order to compensate for errors in the manufacture of pipes and the installation of rigidly fixed connections of equipment, saturation products, etc., was presented, which ensured the collection of the route pipes.
Predicting the loads in quarry excavator work equipment when controlling by fuzzy simulation method
Authors: Velikanov V S , Dyorina N V , Panfilova O R , Antropova L I , Zalavina T Y
Published: June 2019

The article considers the basics of fuzzy simulation as a promising direction for solving practical problems. The paper deals with the example of practical simulation on a computer in the FuzzyTECH package to determine the level of loading the main elements of the mining excavator work equipment. The structural and parametric identification of the developed fuzzy model has been carried out.
Study of pyrolysis of oil sludge
Authors: Petrovsky E A , Kolenchukov O A , Solovyev E A
Published: June 2019

In this paper, the pyrolysis method of dealing with oil waste (oil sludge) is considered. Presented the mechanism of thermal destruction of hydrocarbons. The conducted study of the processes of non-catalytic pyrolysis of oily waste. At pyrolysis of oil slimes an exit of hydrocarbons was observed C1–C4.
Automation of the design and development stages of semiconductor devices
Authors: Imanova A A , Fediakov V V , Tulegenov E
Published: June 2019

The scientific article analyzes the thermal conditions of heat transfer in semiconductor devices, developed a calculation algorithm; a computational methodology for printed circuit boards was chosen, and the proposed methods were implemented by the example of printed circuit boards for calculating the thermal conditions of printed circuit boards that are used to implement power semiconductor technology of oil and gas facilities. It has been established that the automation of design of semiconductor elements and devices involves the initial stages of the thermal calculation in order to optimize the placement of elements and devices to improve the weight and size. It is shown that the analytical approach to the selection of elements and devices allows to reduce the preliminary labor costs for layout, as well as to optimize the placement of elements and devices according to the criterion of minimizing the weight and size indicators. Analysis of transient thermal processes on the printed circuit board can significantly improve the quality of the calculation and obtain more reliable results, bringing them closer to the most reliable.
Mobile weather station based on ATmega2560 microprocessor
Authors: Semenov E S , Ivanchenko G S , Kharchenko A V , Kolobanov R V
Published: June 2019

The paper is devoted to the development of a mobile meteorological station capable of sending SMS messages with data on weather conditions and their nearest changes. When developing the device, weather measurement sensors, a GSM module and a GPS module were used. The paper discusses the key points of the development and analysis of the weather station: the principle of operation, the measurement of weather conditions, sending SMS messages with weather data in real time and the weather forecast, which is formed by the Zambretti algorithm, the results of measurements for the day in the form of graphs. As a result of the work, a weather station was developed that is able to send SMS messages with weather data and a forecast for the nearest future.