Vol 20, No 2 (2012)

Articles
Heterogeneous weakly-structured automata.II Conversion from "chemical-like transformations" to logical ones and vice versa
Grebenschikov E.N., Krylov S.M.
Abstract
The paper deals with the problems concerning functional completeness of one class of logical transformations which represent different OOP-processes and several kinds of chemical reactions which are called chemical-like transformations.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):6-12
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Adaptive algorithm for estimating the determined chaotic processes with the usage of irregular functions basis
Diligenskaya A.N.
Abstract
The problem of estimation of chaotic time series under the perturbation is examined. For more accurate estimation during the continuous processing the correcting feedback from the observed process is used. As a mathematical model the expansion of the system of orthogonal chaotic processes is applied.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):13-18
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Systems analysis of the contribution of science and technology in the development of technology platforms
Diligensky N.V., Tsapenko M.V., Davydo A.N.
Abstract
This article discusses the issues of multi-criteria evaluation of the comparative effectiveness of Technology Platforms on the example of scientific and technical activities of a large research institution.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):19-26
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Feedback control system for a wheel mechanism
Rogachev G.N., Uchaev E.S.
Abstract
The paper is devoted to the problem of controlling wheel mechanisms movement. The analysis of available ways of movement control is made. Their low efficiency is shown provided uncontrollable disturbances are present. A Feedback control system which surpasses the existing ones is developed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):27-32
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Application of the method of analogues for short time series forecasting in the investment portfolio management system
Sarkisov V.G.
Abstract
Requirements for the type and quality of the forecast time series of securities prices are formulated, the most important in constructing a investment portfolio management system. The question of forecasting in order to find a preferred investment situations.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):33-38
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Premises of using the classical methods of the automatic control theory as a methodological platform for ERP-systems designing
Sergeev A.V.
Abstract
Basic provisions of development idea of the new designing conception of automated control systems by the enterprises resources (so-called ERP-systems), which distinctive feature from existing ones is application of the classical automatic control theory methods for the analysis and synthesis of models, criteria and algorithms of management of the financial and economic enterprises activity, are stated. Based on the accounting principles of movement of material and financial streams of the company the example of the enterprise model creation by conditions space method is given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):39-44
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Influences of optical faktor on estimate of surface roughess by optico-electronic complex
Abramov A.D.
Abstract
This paper presents a method of compensation of the supplementary measurement error by the optic-electronic means of the surface microgeometry parameters, which appears as a result of the value of reference incident light deviation. The Method is based on determining autocorrelative functions by the vision of surfaces being analyzed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):45-52
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Influence of stream turbulence on transfer factor of electro-acoustic converter of flowmeter
Krylov A.O.
Abstract
The influence of stream turbulence on the transfer factor of the electro-acoustic converter of the flowmeter defining the oil expense in the main pipelines is considered in the paper.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):53-58
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The metrological analysis of test methods of raise of accuracy measurements on the basis of return interpolational models
Kuper V.Y., Rubtsov M.G.
Abstract
In paper test methods of raise of accuracy of measurements on the basis of return mathematical models of a measuring channel are observed, in the capacity of which interpolational polynomials of Lagranzh are used. The basic making errors of result of measurements are analysed at use of test methods and return interpolational models, the problem of optimum sampling of parametres of tests is solved.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):59-67
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System for measuring grain size of metal alloy using approximation spectral analysis of signal of acoustic emission crystallization
Lange P.K., Jaroslavkin A.J.
Abstract
The problem of definition of the grain size of the metal alloy during its crystallization is considered in the paper. The approximation method of the spectral analysis of the signal of acoustic emission crystallization is described.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):68-74
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Recognition of energetically weak seismicevents in the study of man-made seismic
Nesterenko M.Y., Bukhvalova A.V., Pelagein A.A.
Abstract
When studying anthropogenic seismicity the weak seismic events are significant. Its detection and treatment are based on the correlation and analysis of the seismograms of different seismic stations. A software tool for the detection of weak seismic events is designed and developed. A mathematical model of the recognition of weak seismic events and the analysis of seismogram fragments for their detection are described in the paper. The method of the identification of the type of seismic event is proposed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):75-81
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Analysis and optimization of a value stream map with the aid of EVSM software
Tarasov V.N., Ushakova M.V., Ushakov Y.A.
Abstract
The paper discusses the abilities of the EVSM program based on the example of mapping a value stream process of production drill-rode locking ZBO drill industries, Inc. The obtained results allow for constructing a future state value stream map and to reflect on it the possible ways to reduce non-value added time losses. Using EVSM makes possible to do detailed analysis of the production process and make a variety of patterns, evaluate the effect of the introduction of various instruments of production optimization.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):82-89
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Use modified methodological scheme balchi for modeling of the scholastic virtual enterprise
Cherepashkov A.A.
Abstract
The problems of CAD (computer-aided design) teaching are considered in the paper. The use of educational virtual enterprises for training PLM- (Product Lifecycle Management) - system users is considered. The use of methodological scheme Balchi for modeling computer-aided design techniques in the integrated information environment is described.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):90-96
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Investigation of the composition and structure of themulticomponent SHS-compacted targets for the ARC-PVDin the two material systems TI-C-AL and TI-C-AL-S
Ermoshkin А.А.
Abstract
The composition and microstructure of SHS compacted targets with estimated composition TiC0,5-Х%Al and TiC0,5-Х%(Al-10%Si) (Х=20, 25, 30) was investigated in this paper. It was revealed that the target working layer is based not on double intermetallic compound and carbide but on the MAX phase which in turn has a lamellar structure.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):97-102
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Analysis of vibrating characteristics of spindle bearings
Denisenko A.F., Gasparov E.S.
Abstract
The analysis of vibrating characteristics of spindle bearings is considered in the paper. The signals are received on the basis of the results of the experiments and the principle of their modulation is defined.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):103-108
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Application of hybrid fuzzy controllers for improvement of dynamics of induction motor drives of raw coal feeders
Glazyrin A.S., Polischuk V.I., Afanasyev K.S., Timoshkin V.V.
Abstract
The hybrid fuzzy controllers for improving the dynamics of the induction motor drives of raw coal feeders are considered in the paper. The transient processes in the induction motor drives with classic and hybrid fuzzy speed controllers are considered. The application of the variable speed drive motors with the hybrid fuzzy controllers are considered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):109-114
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System of electric drive of rotation of antenna with variable structure of control channel
Denisov V.A., Zhangirov M.E.
Abstract
The principles of the construction and calculation of the parameters of the positional system of the electric drive with the variable structure are considered in the paper. The variable structure contains optimal and modal regulators. It provides the high speed of the operation working out the given movement and stability applying the action of the disturbance at the moment of resistance.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):115-120
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Transients in independent power installation with induction generator
Kostyrev M.L., Voevodina O.A.
Abstract
The improvement of the independent installations with the induction generators is considered in the paper. The mathematical models for the research of dynamic modes are offered. The results of computer modeling are given, the decisions on ensuring the demanded quality of the generated electric power are offered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):121-127
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Mathematical model of synchronous machine with controlled excitation
Kotenev V.I., Kotenev A.V., Osipov V.S., Kochetkov V.V.
Abstract
A more precise mathematical model of a synchronous machine with the controlled excitation is considered in the paper. The control system of the generator voltage is used on its base.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):128-135
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Multidimensional mathematical model of process of moving of the rotor in electromagnetic suspension
Makarichev Y.A., Starikov A.V., Starikov S.A.
Abstract
The multidimensional model of process of moving of the rotor in electromagnetic suspension, considering gyroscopic effect and interference of control paths is considered. Block diagrams of multidimensional control object are developed. Transfer functions of separate channels and direct cross-connections are found.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):136-142
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Complex analysis of water consumption systems of "VAZ" heat and power plant and directions of increasing efficiency of water management
Gavrilova A.A., Salov A.G., Gavrilova U.V., Kyhareva A.V.
Abstract
The analysis of the operating modes of "VAZ" heat and power plant during the transition period to the market economy is considered in the paper. The analysis of water consumption systems of "VAZ" heat and power plant is made. The methods of increasing the efficiency of the water management and lowering the waste water are offered. The recommendations to optimize the operating modes of the water treatment plants are developed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):143-149
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Use of specific consumption of energy per unit of functionality of compressed air as indicator of energy efficiency of compressor stations
Dovgyallo D.A.
Abstract
The basic characteristics of the modern compressors with the discharge pressure of 1.3 MPa are considered in the paper. An indicator of the energy efficiency is used as an index of the specific energy consumption per unit of the air functionality. This index adds to the characteristics of the compressors equipment and reflects the influence of the discharge pressure on the energy efficiency of compressor stations.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):150-157
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Method of solution of non-stationary problems of heat conduction
Eremin A.V., Kudinov I.V.
Abstract
The results of the development of an approximate analytical method of the solution of the nonstationary problems of the heat conduction are considered in the paper. The method is based on the collective use of the method of separating of the variable and orthogonal methods of the weighted residuals. The high accuracy of the eigenvalues obtained from the boundary problem of Sturm-Liouville solution is noted. For example, finding the first 17th eigenvalues, the fist four eigenvalues with the accuracy up to the 16th decimal concur with their exact values, and the last one, the 17th, concurs with the accuracy up to the first decimal. The high accuracy of the eigenvalues is explained by the fact that due to the given method of solving the differential equation of the boundary problem of Sturm-Liouville satisfies accurately in the number of points of the region that is equal to the number of the eigenvalues.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):158-164
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Use of modern thermal isolation for pipelines. layered lagging
Muranova M.M., Shchelokov A.I.
Abstract
The current state of heat supply system is considered in the paper. The examples of the most common gases which can be used for filling the porous structure in the layered lagging are given. The calculation of the layered lagging and its comparison with the analogs is represented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):165-169
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Thermochemical regeneration of heat based on natural gas conversion by its combustion products: thermodynamic analysis
Pashchenko D.I.
Abstract
With a certain assumption about the process behavior we have established the functional relation between the combustion gases enthalpy transformed into chemical energy of synthetic fuel and technological parameters such as temperature of the process, total pressure, composition of reaction mixture entering the thermochemical regenerator. Parametric identification of the results obtained has been performed with the use of experimental data.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):170-177
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Structural modeling process heating oil as an object management with distributed parameters
Rapoport E.Y., Sazonov D.O.
Abstract
A mathematical model and a structural representation of the process of indirect heating oil in the oven with a gas energy source during its transportation through the furnace is located in the process pipeline as a control object with distributed parameters. Retrieved structural representation of the object.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):178-182
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Hydrodynamic analysis of trunk oil pipelines
Аfinogentov A.А., Bagdasarova Y.A., Tychinina Y.A.
Abstract
The mathematical model describing non-stationary movement of the trunk oil pipelines is considered. The analysis of starting operating modes of the oil pipeline is made. The area of the maximum values of amplitude of shock pressure on length of the pipeline is established.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):183-189
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The design of high-safety instant-action electricblasting cap for the shotfiring in petroleum industry.1. The substantiation and experimental check of thedesign
Kozhevnikov E.A., Gidaspov A.A., Postnov S.I., Rekshinskiy V.A.
Abstract
The design of high-safety instant-action electric blasting cap is offered. The blasting cap does not contain any primary explosives. The blasting cap's principle of operation is based on the deflagration-to- detonation transaction of the secondary explosive which is placed into the confinement. The operability of the offered design is experimentally checked.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):190-196
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Geosolitons and oils of volga region
Malykhin M.D., Malykhina I.V.
Abstract
This article refers to information about a conception of geosoliton Earths degassing.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):197-201
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Calculation of risk of accident the linear part of main pipeline with defects of ovality
Ponomarevа M.A.
Abstract
One tube defects that affect the stress-strain state is ovalisation. To calculate the risk of an accident with a view ovalisation in this paper we consider the set-fuzzy approach, the main function of belonging. As the fuzzy parameter selected in-line pressure. Calculated fuzzy value of the stress state of the pipeline, the risk of counting options. The risk of accident is considered as the ratio of thresholds for the system and the real, in this case, the real value is considered a fuzzy number кц , and as a limit -[ кц ]. Thus, the authors propose and justify an alternative approach to assessing the risk of failure of the linear part of the pipeline in view of ovalisation, in which the option is in-line pressure is represented as fuzzy numbers.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):202-209
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Research and development of induction heating transformator oil in the regeneration system
Zimin L.S., Achakov K.A.
Abstract
We consider the original energy-saving heating technology of transformer oil in regeneration system based on a combination of two methods of heating - induction heating and dielectric heating.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):210-213
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Assessment of the energy impact of cavitation on the liquids
Grigoryan L.G., Konygin S.B.
Abstract
Procedure of experimental assessment of the energy impact of cavitation on the liquids is suggested. Procedure is based on theory of isotropic turbulence and unites size of test emulsion drops made by ultrasound with cavitation energy.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):214-217
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Construction of mathematical model for cooling process of moving medium flow in state space
Danilushkin I.A., Snegovoy V.V.
Abstract
An application of the spectral theory for construction of mathematical model for cooling process of moving medium flow in state space is considered. The process of flow cooling is described by a first-order hyperbolic equation. Comparison results of the realized model transient and the reference model transient received by an operator method are given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):218-221
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Mathematical modelling of process of diffusion as distributed object of control with variable structure
Mandra A.G., Anikin E.V.
Abstract
The problem of mathematical modeling of process of diffusion, with control action on speed of movement of substance in the chemical reactor is described.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):222-224
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Advantages of local power supply
Semenov V.S., Zolotov V.P.
Abstract
The factors showing inevitable advantages of local systems of power supply concerning the centralized are considered. Some of them are system - losses at the transportation, the overestimated tariffs, a work lag effect, an equipment deterioration; others - are caused by defects and lacks of the human factor of the organization of functioning of systems.
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):225-228
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The quality of plunge-feed grinding process control under the use of piecewise algorithms.
Shchetinin V.G.
Abstract
The questions of control of technical processes of plunge-feed grinding under the restrictions on phase coordinates by quality factors are considered. The frontier of piecewise control is analyzed. The loss of efficiency under the use of such algorithms is estimated
Vestnik of Samara State Technical University. Technical Sciences Series. 2012;20(2):229-233
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