Vol 19, No 3 (2011)

Articles
Time-optimal control by transient modes of operation of petroleum trunk pipelines
Аfinogentov A.А., Pleshivtseva Y.E., Efimov A.P.
Abstract
The problem of time-optimal control with consideration of technological constraints is formulated for the transient modes of operation of trunk pipelines for petroleum and petrochemical products transportation. The problem is reduced to the problem of mathematical programming. Some computational results show the time-optimal control by pressure in the transient process of transfer pumps braking.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):6-13
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Comprehensive assessment and development scheme of the project development of road transport infrastructure in the region
Batishchev V.I., Gubanov N.G., Kubrin E.Y.
Abstract
Problems of data in information systems analysis. Based on the synthesis of framing and production models the formation of the formal apparatus of knowledge-development projects, road and transport infrastructure is presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):14-19
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Synthesis of arrhythmic discrete-continuous regulator for linear objects
Egorov V.A.
Abstract
The paper is devoted to the questions of construction of arrhythmic regulators for continuous-discrete control system of linear second order object. The article refers to the comparative analysis of systems workflow with the fixed and variable time step, and reveals the advantages of arrhythmic controllers.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):20-26
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Synthesis of the open-loop regulator for Dubins' car by anytime genetic algorithm
Rogachev G.N.
Abstract
In article the synthesis of the time-optimal open-loop regulator for Dubins car is considered. In assessing the quality of decisions the total time for the task of transferring the object at a given point is taken into account, including the time for calculating the control program and the time of moving the object to the goal. We consider some options for the numerical determination of the regulator as an imperative model of a system of rules like "condition - action". Advantages of anytime genetic algorithm at the decision of the time-optimal problem for Dubins car are shown.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):27-32
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Synthesis of an investment portfolio management system based on virtual financial instruments' modelling
Sarkisov V.G., Sarkisov G.A.
Abstract
The issue of the optimal investment portfolio synthesis based on a combination of existing systems is investigated. The concept of financial instrument is generalized and a new class, virtual financial instruments, the use of which allows for wider application of the investment portfolio management theory's mathematical apparatus is introduced.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):33-39
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Optimization of control of technological podgotov manufactures in the aviation specialized complex
Tarasov V.N., Dibihin K.J.
Abstract
In article the approach to optimization of technological process of preparation manufacture preparations an aviation specialized complex is considered. The known method of the factor analysis-method of principal components is for this purpose used.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):40-48
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Researching of a influence of vehicle characteristics on a overloading during sea transportation
Shirokov S.V.
Abstract
Realize researching jf a influence of vehicle characteristics on a overloading in places of supporting of equipments transporting sea ships. For this task using structural schemes dynamics links and definition them transfer function.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):49-53
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Iterative method of calculation of characteristics of highways of transport communication networks
Gavlievskiy S.L.
Abstract
This article refers to constructing the system of the nonlinear algebraic equations describing streams on branches and units of a network in a stationary mode while transferring packages on a transport highway of a communication network. The decision of system allows calculating time delays and probabilities of packages losses between each pair units of a network, and also streams on branches and units of a network, a delay, probability of blocking and levels of loadings of channels.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):54-60
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The comparative analysis of inaccuracy of active and reactive power measurement methods and power factor measurement on instant signal samples
Karpova N.E.
Abstract
In article considers the questions of accuracy of the active and reactive power measurement, as well as powers factor of periodic signal on instant voltage and current samples. The analysis of the different measuring methods of the integral parameters of periodic signal is conducted.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):61-68
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Technique registration of images obtained by an air-borne multimatrix scanning optical-electronic converters
Kuznetsov P.K., Martemyanov B.V., Skirmunt V.K., Semavin V.I.
Abstract
This article discusses technique of stitching strips of images obtained by air-borne multimatrix scanning optical-electronic converters. The algorithms that implement the method, are characterized by high accuracy and fast-action. The algorithms based on the method of functionalization of image parameters.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):69-81
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Matching syntactical and semantic text models in natural language text analisys
Moshkov I.S.
Abstract
The article examines syntactical and semantic structure of taxonomy-based natural language texts. Was analysed texts vocabulary and connection between basic lexical structures and their meaning was determined. The analysis allows formalizing procedure of matching syntactical and semantic structure natural language texts.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):82-88
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Utilizing remote sensing systems to address tasks of controlling moving objects
Sbrodov V.V., Sviridov V.P., Safronov S.G.
Abstract
The paper dwells on the structure of the correlation and extremum control and navigation unit working from targeting devices of the remote sensing system, and sets out algorithms of the system functioning in the carrier control loop. Outcomes of mathematical modeling and experimental tests are described.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):89-96
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Measurement system for arctic research
Tatarenko E.I.
Abstract
We have offered the conception of constructing of multi-agent measurement system for Arctic researches. Possible ways how to make the system independent on external sources of the energy has been shown. We also have elaborated the system to control the under-water unit, and the imitational modeling complex.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):97-103
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Noise immunity analysis of the measuring chains schemes using generalized signal graphs
Chernetzov M.V.
Abstract
The paper describes the methods of investigation of electromagnetic interference effects, caused in the lines connecting the differential transmitter and the measuring chain, based on the generalized signal graphs. The author also gives the recommendations in the topology of the measuring chains which minimize the interference. The article shows the usability of signal graphs for analysis of the noise effect for various types of parametric differential sensors.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):104-109
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Influence of conditions of sintering of hard alloy WC-Co 10-ОМ on its structure and property
Zaharov D.A., Amosov A.P.
Abstract
Influence of various modes of sintering of samples from firm alloy WC-Co10 fine grain size on their physical-mechanical properties and structure is investigated. Strong dependence of properties and structure from temperature-time parameters, atmosphere of sintering and structure powder charge is shown. Optimum modes of sintering of samples are found in furnaces of various type and the comparative analysis of their properties is carried out.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):110-115
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Researching of silver covered thrust collar's structure and properties for drill bits
Rassudova V.N.
Abstract
Making investigations of metallographic characteristics, chemistry, hardness of basic material and silver cover of drill bit's thrust collar.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):116-121
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Simulation of elastoplastic deformation structural steel a complex stress state
Kryukov A.A., Kaluginмм V.E., Wasserman N.N.
Abstract
A mathematical model of joint elastic deformation is constructed by tension and torsion of thin-walled tubular specimens made ​​of alloys 15H2GMF and proved by the experiments results obtained by using the modern high-precision equipment.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):122-128
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Fatigue failure of concrete structures exposed by dynamic effects: numerical model of the process and methods of prevention
Yan Oo M.W., Ostroukhov N.N.
Abstract
Analytical and theoretical verification of the hypothesis of a significant effect on the fatigue strength of thin-walled concrete elements of building structures, which is relatively weak dynamic effects of different origin (wind, acoustic, seismic, etc.) is performed. The destruction of the elements seen as a process of structural defects in concrete. A computational model for determining the endurance limit of elements of a particular configuration is proposed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):129-134
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Optimization multiampere of contact systems
Voronin A.A., Dobrosotskih A., Kulakov M.P., Kulakov P.A.
Abstract
The optimization of the planar contacts with consideration of circuit conductor size and the conditions of contacts stability is conducted. The conditions of equality rule applicability of the relative growth rate is the objective function are determined. The optimal length of the overlap as a function of current, the size of the contact, capital costs and operating costs is found.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):135-139
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Range diagram method usage for the power selection of the compensating device
Vyrovchikova J.S., Solyakov O.V., Stepanov V.P.
Abstract
In this paper the application of range diagram method of overshoots and dips of reactive termination graphic chart for power selection of unregulated and regulated parts of the compensating device is presented.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):140-144
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Clarification of integrated arguments of the brushless motor with permanent magnets on the basis of simulation of a magnetic field by a finite element method
Vysotskij V.E., Gorshkov R.G., Chujanov D.O., Shumilov E.A.
Abstract
In article are esteemed the problems of simulation of a magnetic field of the gate motor engine . On a foundation of field accounts the integrated arguments in steadied and transient regimes are instituted. The method of clarification of coefficient of self-induction and зубцового of the moment is offered. In a ground(basis) of the pattern the finite element method for a numerical solution of differential Maxwell equations on a computer lays. With its(her) help the allocation of an electromagnetic field of the motor engine is obtained, the basic performances are counted.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):145-152
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Assessment the frequence of mounting surge arresters on towers of power transmission lines 35-220 kV
Gumerova N.I., Popova Y.S., Chalilo F.C., Hohlov G.G., Shishkov E.M.
Abstract
The article presents an assessment of the frequency arrangement of arresters on overhead lines and determined the effect of various parameters of the line for "protection zone" limiters.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):153-158
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Optimization of stationary distribution of load of air coolers of gas
Danilushkin A.I., Kraynov V.G., Migacheva L.A.
Abstract
The paper stated the problem of optimizing the stationary distribution of load for set of air-coolers of gas. The model of heat transfer process in the air cooler of gas takes into account the spatial distribution of temperature along the length of heat exchanger. The mathematical model of the set of air coolers of gas that takes into account the mutual influence of neighbor-fan air coolers on their cooling efficiency is proposed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):159-164
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Synthesis of an optimal control algorithm of heating disc of gas turbine engine in procedure of thermoplastic reinforcement
Danilushkin I.A., Moskovtsev A.A.
Abstract
The paper proposes the special inductor construction for a heating a definite part of a gas turbine engine disc rim in procedure of thermoplastic reinforcement. Standardizing function of a sources of heat in an inductor heating zone given with the new inductor construction. Optimal algorithm of a one-stage heating control with a restriction on the maximum temperature is found.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):165-170
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Features of the mathematical model of the asynchronous motor of air-cooling unit of oil
Kuznetsov V.A., Migachev A.V., Starikov A.V., Titov A.R.
Abstract
The mathematical model of the asynchronous motor taking into account features of air-cooling unit of oil for two various laws of voltage regulation is considered. Transfer functions of the motor on various limits of a range of regulation of speed by means of identification of corresponding transients are found. Change of inertia of the asynchronous motor in depending of frequency and the law of regulation of feeding voltage is analyzed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):171-179
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The optimal regulator synthesis of the stabilization system of cutting force with deep boring
Pankin V.P., Pankin A.A.
Abstract
The article describes the synthesis of cutting force stabilization system with a random disturbance. The transfer function of the optimal force regulator was determined in a research process.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):180-186
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Rotational inert-capacitive devices
Popov I.P.
Abstract
Considered inert capacitive devices, made on the basis of electro-mechanical rotary converters. These include the charge-discharge device, based on an electric direct current machine, inert-capacitance device with capacitive properties with respect to the carrier frequency in the form of pulsating current machine and a device with capacitive properties with respect to the envelope frequency modulated voltage on the collector alternating current machine.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):187-192
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The boundary inverse heat conduction problems based on parametric optimization
Diligenskaya A.N.
Abstract
Inverse heat conductivity problem with identifiable inside heat emission function , formulated in the extremal statement is considered as an optimal control process with distributed parameters. Search control actions carried out on the set of continuous and continuously differentiable or twice continuously differentiable functions. Using the parameterization of control actions, the problem reduces to a special problem of mathematical programming, whose solution is based on a method that takes into account alternance properties desired extremals.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):193-200
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Multicriteria assessment of the efficiency of functioning of boilers equipment of heat and power plants
Salov A.G., Gavrilova A.A., Kyhareva A.V., Gavrilova J.V.
Abstract
There is made analysis of the state of power equipment of heat and power plants. The reason of the reduction of power efficiency of the equipment during the transition to market economy is determined. There is offered one of the possible ways to choose the optimal load of the boilers of one type, but with different performance at the same load. There are given recommendations for optimization of modes of functioning of the capital equipment. The most economy modes of functioning of the power plants and the most effective combination of boilers to optimize the operating regime are determined.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):201-207
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Spontaneous stop of «hot» pipelines
Degtyarev V.N., Pemenov A.V.
Abstract
The article describes a mechanism to reduce the performance of pipelines with oil heating stations (so-called «hot» piping), that transport solidifying paraffin oil. Temporary disconnection of oil heating may not only lead to an increase in oil viscosity, but also can create conditions for the emergence and strengthening of thixotropic structural lattice in paraffin oil. This leads to an intense increase in the viscosity in the area of Newtonian flow of the oil. Decreasing performance of centrifugal pumps contributes to even greater increase in viscosity and finally to a complete stop of oil flow.Examples of the «spontaneous» stop of real «hot» pipelines are listed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):208-212
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Detonation method and manufacturing shaped charges with multilayer liners
Kalashnikov V.V., Demoretsky D.A., Nenashev M.V., Trohin O.V., Rogozhin P.V., Nechaev I.V., Ganigin S.U., Andreev A.A.
Abstract
In this paper we propose a new method of manufacturing shaped charge liner, which increases the penetration of products, the results of calculations based on mathematical modeling of charge with double-layer cladding, manufactured with detonation spraying method. The results of tests with facing charges, made by the proposed method, the penetration of steel targets.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):213-218
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Technology development of enantioselective addition of diethyl malonate to nitrostyrene
Reznikov A.N., Golovin E.V., Klimochkin Y.N.
Abstract
The new approach to the technology of enantioselective addition of diethyl malonate to nitrostyrene as key stage of obtaining of some fine organic synthesis intermediates is offered. It is shown that process can be carried out at a transition metal catalysis with high enantiomere excess of addition product.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):219-224
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Investigation of modal representations of object with restrictions on configuration of distributed control
Guseva M.A.
Abstract
The structure of modal representation of the object, considering influence of a configuration of the distributed control on time modes of object is achieved.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):225-227
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Automation role in optimization process of internet-advertisements
Yolkin D.A., Minakov I.A., Volman S.I.
Abstract
The article describes main concepts of ads management in Internet, main approaches for Internet ads optimization and main requirements for automation of optimization process of Internet ads.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):228-232
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Diagnostics of gas turbine engine's heat path defects development of the gas swapping unit in the process operation
Melentyev V.S., Projaeva O.A.
Abstract
The new method of forecasting of occurrence and development of defects of the gas turbine engine's heat path of the gas swapping unit is offered. The method allows to estimate a residual resource before occurrence of defect on an operating time of the gas turbine engine and to form recommendations about terms of realization of repair - regenerative works.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):233-236
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Synthesis of stabilization system of polymer melt pressure in the single-screw extruder dosing zone
Mitroshin V.N.
Abstract
Stabilization system of polymer melt pressure in the single-screw extruder dosing zone in respect of real perturbations with a pulsating pressure gradient is synthesized, which provides required cable quality as a communication channel taking into account the bandwidth.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):237-239
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Intensification of the process of paper cable insulation drying in vacuum boilers
Mikheev A.G.
Abstract
The paper deals with the problems of drying conditions optimization of paper covering in vacuum boilers. General theoretical propositions of drying are given and on their basis the version of intensification of the process is introduced. The derived algorithm of control is brought to technical implementation using the standard equipment.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):240-243
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Predesign analysis of technological schemes for investment management in regional water supply program
Orlov S.P., Chuvakov A.V., Nechaev D.A.
Abstract
The article deals with the management of regional water supply program in the preliminary analysis and calculation of investment. Intelligent decision support system, which generates alternative technological schemes of water supply projects in the program, is proposed.
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):244-247
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PRAVILA DLYa AVTOROV
- -.
Abstract
Vestnik of Samara State Technical University. Technical Sciences Series. 2011;19(3):248-248
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