Vol 19, No 1 (2011)

Articles
Identification of modified object of Gammershtein
Galiullin R.S.
Abstract
The article refers to the problem of entrance lag effect compensation when identifying an active structure which is represented by consecutive connection of a linear dynamic nonlinear state and second linear dynamic elements. The problem is solved by adapting a known method of Hammerstein object identification. The paper presents several ways of mentioned adaptation.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):6-11
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Definition of model of object with the distributed parameters in the software package of computer modelling of lumped dynamic systems
Guseva M.A.
Abstract
The problem of building of model of an object with distributed parameters in computer modeling of the lumped dynamic systems software package is investigated. For an example, the model of liquid stream heating process is developed and analyzed. The original equation of heat conduction for a two-dimensional flow is presented in the form of one-dimensional first order hyperbolic equations, influencing each other according to the law of convective heat transfer. Results of numerical experiment are demonstrated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):12-18
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Features of construction of genetic operators of the mutation and crossover by search vector of functions by means of genetic programming
Egorov V.A., Rogachev G.N.
Abstract
The paper refers to the usage and building of individuals crossover and mutation operators in vector genetic programming. In article the analysis of various approaches and their efficiency for evolutionary synthesis of control systems is given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):19-26
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Algorithm for constructing the graph adjacency matrix of the obstacles surface to finding the shortest path the movement of truck crane cargo
Korytov M.S.
Abstract
A way of describing the environment with obstacles, and the results of solving the problem of finding the shortest path of movement of the cargo truck with the help of algorithms on graphs is presented. A comparison of ways to create a graph adjacency matrix that describes the environment, on labor and on the accuracy of the subsequent search trajectory is given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):27-31
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Construction of formal model of an active element of the multi-agent decision support system.
Kukikovskiy K.L., Gaisin V.F.
Abstract
By hierarchy consideration of multi-agent decision support system of the enterprises group a basic level is the bottom level of active elements of the system functioning in the heterogeneous market environment. In given article features of existing models of active elements are investigated and requirements to active elements the systems conducting to working out of new formal model are formulated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):32-38
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Сontrol of melt polymer pressure in the batching zone of the single-screw extruder with pulsating pressure gradient
Mitroshin V.N.
Abstract
The method of determining the characteristics of the harmonic disturbing influences in the stabilization system of the polymer melt pressure in the batching zone of the single-screw extruder is proposed. Advices on the synthesis of automation system the process of insulation of wired communication cable with account of real perturbations to guarantee the provision of the required quality of the cable as a communication channel with desired to its bandwidth is given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):39-44
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Automatic acquisition of knowledge about taxonomies from free language text
Moshkov I.S.
Abstract
The article examines syntactic and semantic structure of taxonomy-based natural language texts. In order to do this, texts vocabulary was analysed and connection between basic lexical structures and their meaning was determined. The analysis allows to construct a model of subjective knowledge about taxonomy described in the text. This model can be used for automated acquisition of taxonomic structure from the text describing it.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):45-51
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Сontrol system optimality indicators choice method, focused on consumer's preferences
Sarkisov V.G.
Abstract
The problem of choice of the indicators adequately characterizing result of work of a control system from the point of view of the consumer is considered. The chosen indicators are ranged on degree of conformity to preferences of the consumer. Stability of preferences is investigated
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):52-58
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Researching dynamic influence on the objects sea transportation during pitching
Shirokov S.V.
Abstract
The paper refers to searching overloads in cargo support equipment of maritime ships by building the structure schemes of dynamic elements and defining their transfer function. Various factors influence on overload values is investigated
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):59-63
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Productional models of data and knowledge formalizing in IT-systems of geological recon projects analysis
Batishchev V.I., Gubanov N.G., Tishkovskaya U.V.
Abstract
Problems of data representation in the information analysis systems are evaluated. The formal scheme of geological recon knowledge based is presented by means of trame and production models synthesis.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):64-71
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Мethod of assessment implantation dynamics component «litar» by analyzing x-rays through a system impulse function
Bekasov L.S.
Abstract
This article describes image processing before X-ray, reflecting the current state of the impact of the implantable component «LitAr» on damaged tissue. The proposed method allows to obtain a compressed form of an image with high resolution and thus to quantify the interaction between the implanted component of the surrounding tissue. We also show that the proposed method does not require large time consumption and is characterized by invariance with respect to the shift of data within the analyzed window.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):72-77
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Optoelektronic converter of the linear displacement
Korganova O.G., Kuzneco V.A.
Abstract
The basis of the building of optoelectronic converter of the linear displacement is considered. The function of its transformation is analyzed. The possibility of its linearizations is considered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):78-84
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Multifunctional distance labs for real experiments
Krylov S.M., Tolchev V.N.
Abstract
The paper deals with efficient architecture of remote labs for real experiments. The conditions, which provide maximum flexibility robustness and controllability of such systems are evaluated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):85-91
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Self-adaptive algorithm of high-precision superposition of the affine-transformed image
Kuznesov P.K., Chekotilo E.Y., Martemyanov B.V.
Abstract
This article presents a self-adaptive algorithm of high-precision superposition of the affine-transformed images. Methodology is based on using method of functionalization of parameters of geometrical mismatch of the affine-transformed images of mobile objects.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):92-100
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Regional information systems functioning performance characteristics evaluation based on information and communication service-market simulation
Masloboev A.V., Datyev I.O.
Abstract
The information technology for functioning performance characteristics evaluation of regional information systems (RIS) based on information and communication service-market simulation has been developed. As a RIS integral performance criterion the user satisfaction of information needs degree for the consideration is proposed. The user structure dynamics and regional information service-market development simulation models have been designed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):101-108
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Тhe method of measurement of parameters of three-element bipolar electric chains
Melentyev V.S., Kostenko E.V.
Abstract
The new method of three-elements bipolar electric chains parameters based on instant values of transients in a measuring chain is considered. The scheme of the device implementing the method and results of the analysis of a quantization error is given.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):109-114
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Оptimization of structural parameters of multielectrode electro-capacity transformers of vlagomerov of oil
Steblev U.I., Nefedova E.S.
Abstract
The method of physical modeling of multielectrode electro-capacity converters of multi-flow oil hydrometers is given. Experimental data that allow to optimize the choice of basic structural parameters of converters in various pipeline calibers is obtained.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):115-122
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Search domain names in corporate networks using lattice models
Khramtcev A.S.
Abstract
The article deals with the usage of lattice models in the construction of domain names. The task of improving IP-addresses search performance for the domain name in corporate networks is solved by using a structural format in which the domain name is an element of a lattice model
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):123-128
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Spectral power density estimation with parametrical statistic smoothing using of differen linear model of time series random process
Yakimov V.N., Philimonov A.B.
Abstract
The paper refers to parametric evaluation of a random process spectral power density based on building of a linear differential model of random process time series. To obtain stable results of parameter evaluation data smoothing is conducted. The algorithm scheme for desired parameters evaluation is presented
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):129-136
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Оn some mathematical models of mechanical system "pipeline - pressure sensor"
Velmisov P.A., Pokladova Y.V.
Abstract
In this work the mathematical models of the mechanical system including the pipeline with a working medium and the sensor with the elastic element are considered. The sensor is intended for determination of pressure of a working medium (for example, on an output from the camera of combustion of the engine) law of change of which is considered set. The differential equations describing oscillations of an elastic element are received, and on their basis numerical experiment on research of dynamics of an element is made.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):137-144
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Fast annealing forgings of high speed steel
Zholdoshov B.M., Muratov V.S., Kenis M.S.
Abstract
The mode of the annealing of forgings made of steels R6M5 and R6M5K5, which are implemented directly in the two-chamber kiln at the site of forging is proposed and first developed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):145-150
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Automatic control in gas temperature on the output of air cooling units
Abakumov A.M., Alimov S.V., Migacheva L.A., Mosin V.N.
Abstract
Questions of automatic control system synthesis in gas temperature on the output of gas pipelines compressor stations air cooling units are considered. Automatic control system computer modeling results are presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):151-157
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Structural modeling of process of methodical induction heating
Danilushkin A.I., Kozhemyakin A.V., Mostovoy A.P.
Abstract
Complex of the finite cylinders discretely moving from an input to an output with one control action in the form of power of internal sources of heat is considered as subject to control. Transfer functions of object with the distributed parameters in relation to the concentrated control action and perturbations in the form of a stream of heat losses are found. The structural model of the distributed object is offered as a complex of the finite cylinders with general surface of contact at the end,, considering presence of a heat transfer from surfaces due to a difference of temperatures of bounding workpieces.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):158-165
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Frequency current inductor in plastics molding
Zimin L.S., Sorokin A.G.
Abstract
The choice of current frequency during plastic induction heating is prented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):166-168
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Method of evaluation parameters attainable highly sensitive measuring oscillators converter negative capacitance
Lyapidov V.S.
Abstract
The method of achievable parameters evaluation of a high sensitivity measurement oscillator with negative capacity converter is presented. Evaluation of a wide-range of achievable parameters of a highly sensitive measurement of the oscillator with the negative capacitance converter.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):169-172
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Analysis of dynamic process of re-excitation of the welding arc
Myakishev V.M., Shishkov E.M.
Abstract
The dependence of the dynamic properties of the system «power source - welding arc» on the parameters of the welding circuit was analyzed. The rate of voltage change when current passing through zero was estimated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):173-178
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Increasing of dynamic accuracy of positioning servo electric motor drive including nonlinearity type backlash in kinematic chain
Sarantsev S.S., Lysov V.E.
Abstract
The problem of increasing the dynamic accuracy of a closed loop automatic control system of precision revolving table is considered in this paper. Accuracy of positioning this device 2- 3// (arc second). Coordinate boring machine coordinate grinding machine, coordinate measuring machine are equipped with revolving table to implement complex motion trajectory of tool relative to piecel and to guarantee declared accuracy.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):179-184
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To compilation equivalent circuits multiwinding transformers and determination of their parameters according registration emergency and working conditions
Smirnov I.N., Alyunov A.N., Babarushkin V.A.
Abstract
The question of determining the parameters of equivalent circuits of multiwinding transformers based on data registration of different modes when using the reduced and unreduced equivalent circuits of multiwinding transformer is refered.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):185-191
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Parametric synthesis of regulators of multicircuit control system by magnetic rotor suspension
Starikov A.V., Starikov S.A.
Abstract
Two variants of construction of magnetic rotor suspension control system are considered. Transfer functions of closed-loop system are found and stability conditions are defined. Analytic expressions for calculation of regulators parameters are obtained
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):192-200
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About industrial carbon dioxide emission influence on climate changers
Geraschenko I.O., Lapidus A.L.
Abstract
The influence of anthropogenic СО2 emission on the atmosphere's condition, share in carbon dioxide circulation within nature and influence on the greenhouse effect has been examined. The urgency of industrial emission limitation has been estimated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):201-204
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Analysis of an analytical model of a temperature field of gas turbine engine's disc
Danilushkin I.A., Moskovtsev A.A.
Abstract
The paper presents the procedure of finding of transfer function of disc's temperature field as an object with distributed parameters. Definition of two-dimensional problem in polar coordinates is examined. Heat losses from disc's end surface are considered as a function of a heat current depending on surface temperature. Simulation of behavior of disc's thermal field is performed for a case of continuously active thermal sources.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):205-211
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Сonstruction of computer models of systems of the heat supply of cities
Kudinov I.V.
Abstract
The computer of Saratov city area control heating system supplied from TPP and CHP-5 is developed. The model allows to define heat carrier flow speed, consumtion and pressure in any area of a heating network. Based on obtained results recommendetions on heating system operating modes changing and maintenance sites are given. General conclusichs for other heating system network are make
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):212-219
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Synthesis of optimal control algorithms for process of induction heating of massive body
Lapitskaya M.H.
Abstract
This paper considers the task of searching for optimal control algorithm of internal heat sources in feed-back system for stabilization temperature field within aluminum plate. Method of method of subsequent approximation for finding coefficients of this algorithm is investigated.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):220-226
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Enthalpy content diagram for steam-and-smoke mixtures
Nikitin M.N., Shchelokov A.I.
Abstract
Methods of enthalpy content diagrams construction for steam-and-smoke mixtures applied to normal cubic meter of burned gas and the a kilogram of resulting mixture are considered. Enthalpy content diagrams for a special case of steam-and-smoke mixture constructed by offered methods are presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):227-232
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Determination of water content and metalcontaining microelements in petroleum in the flow of the pipeline
Susarev S.V., Astapov V.N.
Abstract
The paper describes the methodology of developing a method for determining the water content and total content of metal microelements in petroleum or petroleum products in the flow of the pipeline. The theoretical basis of the method for determining the percentage of water content in petroleum, which is the measurement of dielectric permeability of the dehydrated and crude petroleum are presented. The method for identification of petroleum from fields is proposed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):233-237
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Modelling of two-dimensional phase transition in adsorbed layers
Konygin S.B.
Abstract
Questions of probabilistic cellular automation method application the adsorbtion processes modeling are considered/ The equilibrium and kinetic parameters received as a result of adsorption from a gas phase on a solid surface modeling processes, which are complicated by two-dimensional phase transition are presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(1):238-241
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