Vol 21, No 1 (2013)

Articles
Memory of N.V. Diligensky
Livshits M.Y.
Abstract
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):6-8
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Equivalent circuits of elementary processes for mechanisms of industrial technologies formalization
Konygin S.B.
Abstract
Questions of industrial technologies formalization are considered. The equivalent circuits of some physicochemical processes are offered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):9-13
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Comprehensive assessment and classification of objects of water supply in the region
Nechaev D.A., Orlov S.P.
Abstract
The method of systems analysis for territory water supply is proposed. Technique based on DEA models is constructed to assess the effectiveness of water supply facilities water complex in Samara region. The classification of territorial objects in efficiency is made. The analysis allowed to determine the necessary investments in regional program for water supply development.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):14-21
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Production synthesis method of controllers for continuous-discrete objects
Rogachev G.N.
Abstract
The problem of controller design for continuous-discrete object is solved. A set of rules of the regulator is synthesized. Numerical-analytical procedure is used for this purpose. It is based on the joint application of finite-dimensional optimization methods for the determination of the conditional part of each of the rules as a logical expression of temporal logic and on sufficient optimality conditions for the analytical procedure of searching for each of time intervals of the control law with full feedback.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):22-27
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System analysis of application of the Tobin's separation theorem to Russian financial market
Sarkisov V.G.
Abstract
The issue of the Tobin's model applicability in the Russian financial market conditions is considered. Dependences of a portfolio structure on short-term investment and crediting rates are investigated at various investor's risk rejection levels. Modification of the separation theorem, corresponding to restrictions of the Russian legislation is offered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):28-33
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Automation prepress edition
Tarasov V.N., Chekrygina V.V., Sherstobitova V.N.
Abstract
The main results of the study of automation prepress publications issues and the attempt to expose the use of the mathematical theory of decision-making in the planning practice of publishing activities are presented. The algorithm of the information system for further use in the software product «Automated executive secretary» (AES) is developed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):34-41
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The compression - restoration algorithm certification of measuring signals by modified Proni method
Baranov V.A., Terekhina A.V., Cypin B.V.
Abstract
Problems of the software metrological part certification of information-measuringand managing systems are considered. Compression - restoration algorithms of a measuring signal on the basis of the Proni method are shown. Error restoration estimates at application of the Proni modified method depending on information capacity were received.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):42-47
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The estimation of the measuring device error of integrated characteristics of harmonious signals with phase-shifting blocks
Ivanov J.M., Sinitsyn A.E., Simonov A.V.
Abstract
Results of the analysis of the measuring device error of integrated characteristics of the harmonious signals, using formation of additional signals with the help of the phase-shifting block are given. The received analytical expressions and diagrams of the error allow to choose optimum parameters of measuring process and a phase corner shift of the phase-shifting block providing reduction of the given error kind .
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):48-52
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The method of parameters separate definition of capacitor gauges
Melentiev V.S., Evstifeeva T.S., Levina K.D.
Abstract
The new method of measurement of parameters of capacitor gauges which provides definition as capacities, and resistance of isolation is offered that increases accuracy of measurement of informative parameter. Results of the analysis of an error of measurement of the capacity caused by an error of quantization of instant values of transients are resulted.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):53-57
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Sentiment Analysis: practical recommendations and its usage for improving user-reaction on relevant online advertisements
Minakov I.A.
Abstract
The paper discusses and classifies different approaches for sentiment analysis, shows its implementation for solving a problem of optimizing online advertisements and gives practical recommendations for SA setup depending on problem domain specifics, task requirements and languages of documents.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):58-63
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The integral method of determining the parameters of multielement two pole circuit sinusoidal effects
Hrisanov N.N.
Abstract
The method of determining the multielement bipolar circuits parameters is considered based on the integration of the transient sinusoidal exposure.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):64-71
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Thermal conductivity and temperature regimes of vacuum-arc evaporation of multilayer shs-pressed cathode of TiC 0,5-Al и TiC 0,5-Аl-Si system
Lavro V.N., Orlov I.I., Fedotov A.F.
Abstract
Calculation and quantitative evaluation of thermal conductivity and surface medium integral temperatures of multi-layer composite SHS pressed cathodes for deposition of vacuum-arc coatings were presented. Thermal conductivity of multilayer SHS cathode in TiC 0,5-Al and TiC 0,5-Al-Si systems is more than thermal conductivity of titanium cathode. However, due to the higher current of the arc temperature of SHS cathodes is approximately equal to the temperature of titanium cathode. It was found that the main factor determining the content of micro droplets phase of vacuum arc coatings is the fusion temperature of the evaporated cathode material.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):72-80
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The thermodynamic calculation of the effect of refining flux to the self-propagating high-tempruture synthesis of composite alloy AL-TIC
Luts A.R., Ermoshkin A.A., Timoshkin I.U., Ermoshkin A.A.
Abstract
The thermodynamic calculation of the effect of refining flux on the self-propagating high-temperuture synthesis of composite alloy Al-TiC is presented in this article.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):81-86
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Physical aspects of contact shakedown elastic bodiesat coulomb friction
Alexandrova M.Y.
Abstract
The analysis of models describing the stick mechanism of elastic bodies at Coulomb friction at cyclic loading is done. The factors having a significant impact on the onset of full and partial shakedown in frictional contact are described. The results of numerical modeling of the fields slip and stick in conjugate cell assembly at cyclic loading at the example of cloves in cone drill bit are presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):87-92
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The formulation of the problem of the beam fluctuations with moving spring-loaded support
Anisimov V.N., Litvinov V.L., Korpen I.V.
Abstract
The problem of beam fluctuations with moving spring-loaded support which has got joined mass is received. When the support is not absolutely fastened within the moving border energy exchange occurs. This leads to complexity in record boundary conditions. To formulate the task the variational principle of Hamilton is used. The visco-elastic properties of material of the beam are taken into account. The task includes differential equation, initial conditions for a curved axis of the beam and for joined mass, boundary conditions. Note that the conditions on the moving border are written as ratios between function and its derivatives on the left and right sides of the border.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):93-98
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Experimental investigation of the influence of technological factors on the forming of multilayered panels done of composite materials
Bitkina O.V.
Abstract
The influence of technological pre-tension of fibers, panel thickness, orientation angles of composite layers and volume fraction of fibers and resin on the forming of multilayered panels done of composite materials is considered. The validation of the developed mathematical model was made by comparing the theoretical and experimental results.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):99-110
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Size effect of cross-section of hollow cylindrical parts for distribution of residual stress and endurance limit of faster surface plastic deformation
Vakulyuk V.S., Pavlov V.F., Semyonova O.Y.
Abstract
The regularities of residual stress distribution in smooth cylindrical specimens and specimens having a semicircular profile cut after outstripping superficial plastic deforming are studied. The influence of residual stresses distribution on solid and hollow steel 20 specimens on endurance limit at stress concentration is examined.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):111-117
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Application of a method of estimating experimental and calculated natural frequencies conformity for improvement the fe-model of product
Klebanov Y.M., Bruyaka V.A., Vavilov M.A., Stolyarov N.N.
Abstract
In article the results of application of Modal Assurance Criterion method for estimating experimental and calculated natural frequencies conformity, gained for a product «Souyz 2-1B», are presented. Calculations are carried out through FEM in ANSYS.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):118-126
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Application of penalty method to derivation of variational motion equation of continuum«indenter – deformable medium»
Ovchinnikova N.V., Chebotarevsky Y.V.
Abstract
Contact problem for strain-stress analysis of continuum “indenter – deformable medium” is formulated with consideration of curvature of the deformed surfaces. Penalty method is employed to insert the constraints on contact surface directly into variational equation of motion. It allowed to conduct further strain-stress analysis by finding unconstrained minimum of corresponding functional using numerical methods. Variational motion equation is derived without specifying definite geometrical form of deformed contact interfaces, strain-displacement relations and constitutive equations for materials of bodies the continuum consists of.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):127-134
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Influence of degradation processes and severe plastic deformation on defective of pipe steel
Petrov P.P., Ivanov A.M., Platonov A.A.
Abstract
The influence of degradation processes as a result of continuous operation, and severe plastic deformation (SPD) on the change of structure, the crystal lattice parameter and the dislocation density in the pipe steel VSt3sp is considered. The long-term operation of the pipe contributes to the development of degradation processes in the crystal structure and modifies the mechanical properties of the material is shown.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):135-141
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Break-in effect roller residual stresses and fatigue resistance of specimens of steel 40KHN
Radchenko V.P., Kirpichyov V.A., Lunin V.V.
Abstract
Residual stress and fatigue specimens with a diameter of 45 mm steel 40KhN after running roller investigated. Revealed the thickness layer with compressive residual stress is 1 mm, the axial residual stress is 1.8 times higher than the county and to the surface of the slow-down stress by 20 %. Fatigue tests of notched specimens radius 3 mm after DFND roller have shown that the fatigue limit is increased in the case when the depth of cut is three times the thickness of a layer of compressive residual stress, and the quantitative relationship between the residual stress and endurance limit is well reflected using the criterion of average integral residual stresses
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):142-150
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Optimization of the conditions of use the diamond correction roller in bearing industry
Shaposhnikov S.D., Yakubovich E.A.
Abstract
The optimal conditions of use perspective type of the correction tool are submitted.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):151-157
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Choice of admissible distances with emc in magnetic fields of industrial frequency single phase wire in domestic and office
Bespalov V.A., Smirnov M.V., Saltykov V.M., Saltykov A.V.
Abstract
Based on the proposed method of calculating the total value of the magnetic field of industrial frequency currents in two phase wires (cables) electrical systems are expressions for the permissible distances to sensitive to the magnetic fields of objects from a position of conditions ensuring electromagnetic compatibility.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):158-165
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Method of making the complicated functional dependence for management by digital hydraulic drive with the use of spline-approximation
Bryatov A.S., Myakishev V.M., Protsenko A.N.
Abstract
The specificity of digital control hydraulic actuators consisting of rigid requirements for accuracy, speed, reliability, technological consistency, overall and widespread and economic parameters of elements and the automation devices is considred. A method of reproduction of complex functional relationships, the essence of which lies in the spline approximation of a signal using as a criterion for approximation of the curvature and the lengths of arcs approximable plane curves and basis splines with a focus on graph-analytic realization is offered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):166-171
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Development of determination methods of parameters in electric arc models
Voronin A.A., Kulakov P.A.
Abstract
Determination methods of the parameters in electric arc off models are given according to the results of the passive experiment applicable to a wide class of integral arc models.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):172-179
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Problems of electromagnetic compatibility power surges in electrical 0,4 ÷ 35 kv installations
Goldstein V.G., Kopyryulin P.V., Sevostanova O.M.
Abstract
The approach for deriving refined mathematical model of electromagnetic transmission in cell power systems in the form of electromagnetic interference and lightning impulse quasi surge is developed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):180-190
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Efficiency electricly combined short-circuited winding of ventil generator
Zubkov Y.V.
Abstract
Various schemes of single-layer electrically combined rotor windings of the ventil generator are considered. The analysis of efficiency of their use in magnetic fields of the exciter and the generator is carried out. The conclusion on preference of windings is drawn.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):191-196
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Approximation of the objects with nonstationary thermal conductivity with the elementary dynamic units
Kotenev V.I., Kotenev A.V., Osipov V.S., Kochetkov V.V.
Abstract
The system of ordinary differential equations equivalent to one-dimensional thermal conductivity equation with boundary conditions of the first kind is derived which is oriented to solve the tasks in the field of complex systems control. Comparative appraisal of the accuracy of the approximation task solutions is given for the different methods applied with few elements partition of the heated body.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):197-202
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Discrete mathematical model of the digital of the servo drive with the synchronous motor
Lisin S.L., Starikov A.V.
Abstract
The mathematical model of the servo drive with the synchronous motor, considering quantization process on time is developed. Discrete transfer functions of the closed electric drive for two values of the sampling time are found. It is shown that reduction of the sampling time considerably decreases response time of the electric drive.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):203-208
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Structural and graphical representation of the process of deep drawing as an object of the aunomatic control system
Lysov V.E., Kaplun E.S.
Abstract
The process model of making three-dimensional parts by deep drawing has been investigated. The block Diagram has been elaborated as the object of the automatic control system.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):209-214
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Experimental research of control system of upper working lock gate
Melnikov E.V., Kolpaschikov S.A., Danilushkin I.A.
Abstract
The results of the active experiment to study the dynamic characteristics of hydraulic lifting sluice gate of navigation lock are discussed. It is given a description of experimental setup.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):215-218
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Experimental measurement of the size of dead zone of the backlash in kinematical chain of drive system of jig boring macine
Peshev Y.I., Sarantsev S.S.
Abstract
The problem of an automatic measurement of the size of dead zone of the backlash in kinematical chain of the jig boring machine is considered in this paper. Algorithm of automatic measurement and functional scheme of this system are given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):219-222
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Analysis and modification of the forecasting method of energy consumption using the extrapolation of sampling the maximum similarity
Sunagatov I.M.
Abstract
A review of the extrapolation method of maximum likelihood sample. A variant of the method to improve the accuracy by adapting the method of autoregression.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):223-226
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Improving accuracy sigma-delta adc’s in systems for critical applications
Piskaev K.Y.
Abstract
Now ΣΔ-ADC are the de facto standard in the construction of high-precision measuring systems, but to achieve these characteristics often do not address specific applications. In work the analysis the shortcomings of the main ways to increase the accuracy of ΣΔ-ADC, from the point of view of their use in products for critical applications.
Vestnik of Samara State Technical University. Technical Sciences Series. 2013;21(1):227-231
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