ISSN 1991-2927
 

ACP № 1 (55) 2019

Section: "MATHEMATICAL MODELING"

Aleksei Arkadevich Smagin, Ulyanovsk State University, Doctor of Science in Engineering, Professor; graduated from the Faculty of Radioengineering of Ulyanovsk Polytechnic Institute; Head of the Department of Telecommunication Technologies and Networks of Ulyanovsk State University; an author of articles, inventions, and monographs in the field of information system development of different purposes. [e-mail: smaginaa1@mail.ru]A. Smagin,

Iulia Aleksandrovna Radionova, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Candidate of Science in Engineering; graduated from the Faculty of Mathematics and Mechanics of Ulyanovsk State University; finished her postgraduate study at Ulyanovsk State Technical University; Lead Programming Engineer at FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of automated workflow systems, intelligent technical documentation storages, and statistical analysis of supplier appraisal. [e-mail: julia-owl@mail.ru]I. Radionova,

Sergei Aleksandrovich Karpaev, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Postgraduate Student; graduated from Ulyanovsk State Technical University; Production Control System Engineer at FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of the business software automation and short-term production planning. [e-mail: neonix3000@mail.ru]S. Karpaev

Operating-resource Model of Technological Operations Distribution Based on the Implementation Means 55_10.pdf

The article is devoted to the actual topic of designing route maps. At the heart of the route maps, the route for performing technological operations at the production site is laid. In the production process, production is often stopped due to imperfections in the route map, one of the reasons for which is the change of resources.In the article it is proposed to carry out the design of the technological route according to the proposed principles with the use of a two-pass two-component model as an increase in the productivity of the production process. The methodology is based on the principle of selecting the means for implementing technological operations on the basis of two interacting models, which make it possible to cover the process more fully from the point of view of resource provision and the performance of a technological operation using the example of chemical production.The proposed model allows the designer to choose the route of the technological process from the set of proposed options. An algorithm for designing and implementing a model in automated systems is presented.The offered algorithms allow to form design decisions, it gives the chance of their use for the subsequent processing and definition of efficiency.Formed by different criteria, technological routes provide many variants of the solutions obtained. The offered provides efficiency of improvement of quality of technological processes due to use of means of information support of maintenance of a set of operations close to an optimum choice of technical means of realization.

Algorithm for designing design solutions, tool support, mathematical model, design methodology, operational- resource model, design of route maps of technological processes, technological processes, chemical production.

2019_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.



Marina Vitalevna Samoilenko, Moscow Aeronautical Institute, Candidate of Science in Engineering; graduated from Moscow Aeronautical Institute and Moscow Institute of physics and Technologies; Associate Professor at Moscow Aeronautical Institute (of National Research University); an author of articles, monographs and inventions; scientific interests are in the field of signal and image processing. [e-mail: Samoi.Mar@mail.ru]M. Samoilenko

Reconstruction of the Point Spatial Coordinates in the Case of Normal Stereo Photography 55_11.pdf

The article presents a solution for the problem of a point spatial coordinates reconstructing in a base coordinate system by its two stereo images. Author solves the problem for the case of identical cameras application which optical axes are mutually parallel and orthogonal to the stereoscopic basis. This taking photo is called in photogrammetry as a normal photographing. Author provides a computational simplicity of a point spatial position recovery algorithm. But in classical photogrammetry this computational simplicity is provided only under additional restrictions: cameras should locate at the same height, images should be horizontal and the base of stereoscopy - parallel to the horizontal axis of the base coordinate system. For another camera positions, it will be necessary to use additional spatial similarity transforms which complicate computations.Solution presented in the article differs from the photogrammetric method by its universality: neither additional conditionsare imposed to the positions of the cameras and images. And at the same time, it has computational simplicity comparable with the photogrammetric method of normal photography with additional restrictions. Methodologically, decision presented in the article is based completely on the application of vector-matrix approach from the problem formulation up to the final result. Structurally, it differs from the photogrammetric method by its symmetry with respect to of the cameras and images parameters: cameras are equivalent when determining a point spatial coordinates, while the photogrammetric solution is based on the coordinates on one image, the other one is used for the scaling factor determination.The universality of the presented solution and its computational simplicity are proved by the results of computer experiments.

Stereo images, point spatial coordinates, central projecting, vector-matrix equation, photogrammetry, normal photographing.

2019_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.



Dmitrii Vladimirovich Ganin, Nizhny Novgorod State University of Engineering and Economics, Candidate of Science in Economics; graduated from the Nizhny Novgorod Academy of Agricultural Sciences; Vice-Rector for Research and Innovation Affairs, Associate Professor at the Department of Information and Communication Technologies and Communication Systems of the Nizhny Novgorod State University of Engineering and Economics; an author of articles and patents of the Russian Federation in the field of error-correcting coding and data recovery systems. [e-mail: ngiei135@mail.ru]D. Ganin

Permutation Decoding in the System of Coherent Networks 55_12.pdf

The principle of matching high-speed optical communication systems at the data link layer using permutation decoding of redundant codes is considered. The expediency of such an approach is proved when applying the cognitive data processing procedure. Author indicates the parameters of such systems. Considering the widespread use in data exchange systems and in automatic control systems, in computing systems and similar computing devices of non-binary noise-resistant Reed- Solomon (RS) codes, a subtle analysis of the complexity of decoding such codes using the permutation method is carried out. The estimation is made according to the number of code vectors of elementary arithmetic operations performed in the decoding procedure. Two approaches are compared: firstly, the classical principle of decoding RS codes, secondly, the permutation decoding method using a cognitive map. It is shown that the results obtained for rearrange decoding can be generalized for other code structures, including those implemented on the basis of binary codes. Various approaches to the formation of soft solutions for non-binary symbols of RS codes are presented and a likelihood ratio method is proposed which is based on comparing the obtained sequence of estimates of a non-binary code symbol with some predetermined reference set of estimates. The expediency of using the analyzed method in a number of important applied areas is proved.

Coherent network, non-binary redundant code, cognitive map, fast matrix transformations.

2019_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.



Vladimir Kuzmich Manzhosov, Ulyanovsk State Technical University, Doctor of Science in Engineering; graduated from the Engineering Faculty of Frunze Polytechnic Institute; Professor at the Department of Industrial and Civil Engineering of Ulyanovsk State Technical University; an author of articles, monographs, inventions in the field of dynamics of machines, impact processes modeling. [e-mail: v.manjosov@ulstu.ru]V. Manzhosov,

Aleksandr Anatolevich Samsonov, Ulyanovsk State Technical University, graduated from the Dimitrovgrad Institute of Technology, Management and Design of ULSTU; Postgraduate Student of Ulyanovsk State Technical University; an author of articles and patents in the field of creation of mechanisms of various technological purposes. [e-mail: tpm@ulstu.ru]A. Samsonov

The Functioning of the Lever Mechanism for Automated Capture of Solid 55_13.pdf

The article is devoted to the problem of functioning of the lever mechanism in the automated capture of a solid body. In technological systems such mechanisms are used to lift and move solid cylindrical bodies. The task of the mechanism is an ability to hold a solid body due to friction forces in the capture zone. Friction forces in the contact zone of the driven link with the surface of the body exclude the possibility of breaking the connection between the solid and the driven link. The gripping force depends on the magnitude of the driving force and the parameters of the lever mechanism gripper. The model of the lever mechanism of capture is constructed. The ratio of the force at the leading link and the arising normal reaction in the contact zone of the driven link with the cylindrical surface is established. The influence of the mechanism parameters on the ratio of these forces is determined. The zones at which the force ratio reaches the lowest values are shown.

Model of lever mechanism, automated capture, friction forces, angle of motion transmission.

2019_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.



Innokentiy Vasilyevich Semushin, Ulyanovsk State University, Doctor of Science in Engineering, Professor of Information Technology at Ulyanovsk State University. Memberships in Professional Organizations: IEEE Society; IEEE Control SystemsSociety. Author of papers, monographs, and textbooks; holds patents for inventions. Field of interest: Systems and signals theory; computational mathematics. [e-mail: kentvsem@yandex.ru]I. Semushin,

Yulia Vladimirovna Tsyganova, Ulyanovsk State University, Doctor of Science in Physics and Mathematics, Professor of Information Technology at Ulyanovsk State University. Author of papers, a monograph, and textbooks; holds State Registration Certificates of computer programs. Field of interest: Parameter identification and adaptive filtering; numerically efficient algorithms for stochastic systems. [e-mail: tsyganovajv@gmail.com]Y. Tsyganova

Numerical Aspects of Far-end Crosstalk Cancellation in Vdsl Downstream 54_9.pdf

A complexity analysis of computations involved in two precoding methods - Zero Forcing (ZF) vs. a Simplified Linear (SL) - in the context of a Very high-speed Digital Subscriber Line (VDSL) is presented in this paper. For the ZF-precoding technique, eight computing strategies have been compared, four of which entail the explicit calculation of inverse normalized channel matrices and other four do not. In addition to this analysis, SL-precoder complexity - based on the approximate matrix inversion-has been estimated. Both methods solve the problem of full or partial far-end crosstalk (FEXT) cancellation in VDSL downstream transmission. For this problem, the strategy avoiding the explicit matrix inversion was found to have the smallest number of multiplication/division operations. The analysis performed provides an opportunity for VDSL-designers to justifiably select a computationally attractive precoding strategy taking into account the necessity of adaptive power control for the input signals to the DSL-channel from the Central Station.

Vdsl-системы, vdsl-systems, far-end channel crosstalk, downlink data transmission, zero-forcing precoding, simplified linear precoding.

2018_ 4

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Vladislav Nikolaevich Kovalnogov, Ulyanovsk State Technical University, Doctor of Science in Engineering; graduated from Kazan State University; Head of the Department of Heat Power Engineering at Ulyanovsk State Technical University; an author of articles, monographs, and inventions in the field of modeling, research and optimization of hydrogasodynamic processes in power plants and manufacturing equipment. [e-mail: kvn@ulstu.ru]V. Kovalnogov,

Ruslan Vladimirovich Fedorov, Ulyanovsk State Technical University, Candidate of Science in Engineering; graduated from Ulyanovsk State Technical University; Associate Professor of the Department of Heat Power Engineering of UlSTU; an author of articles and inventions in the field of numerical modeling of hydrogasodynamic processes. [e-mail: r.fedorov@ulstu.ru]R. Fedorov,

Larisa Valerievna Khakhaleva, Ulyanovsk State Technical University, Candidate of Science in Engineering; graduated from Ulyanovsk State Technical University; Associate Professor of the Department of Heat Power Engineering of UlSTU; an author of articles and inventions in the field of numerical modeling of hydrogasodynamic processes. [e-mail: larvall@mail.ru]L. Khakhaleva,

Andrei Valentinovich Chukalin, Ulyanovsk State Technical University, graduated from Ulyanovsk State Technical University; Postgraduate Student at the Department of Heat Power Engineering of UlSTU; an author of articles and inventions in the field of numerical modeling of hydrogasodynamic processes. [e-mail: chukalin.andrej@mail.ru]A. Chukalin

Mathematical Modeling and Numerical Analysis of Thermal Protection Effectiveness With Hemispherical Damping Cavities 54_10.pdf

The gas turbine engine performance improvement is linked inextricably with the increase of the intensity of dynamic, aeromechanical and thermal processes, which, in turn, requires the development of systems and devices allowing to protect the most loaded equipment components. The most effective ways to protect surfaces from overheating are a convective cooling; the absorption and accumulation of heat by condensed substances; the cooling that operates on mass transfer principle; the radiation and electromagnetic cooling; heat-shielding coatings. One of the most effective ways to protect surfaces from overheating is a thermal protection in the form of film-like surface cooling based on the mass-transfer surface-cooling principle. This method is widely distributed and it proved to be effective. The paper considers the possibility of improving this method of cooling due to the impact on the boundary layer with hemispherical damping cavities behind the injection section of the cooler. A mathematical model is proposed, the numerical study of the thermal protection effectiveness by the use of hemispherical damping cavities is carried out. The possibility of a significant decrease of the turbulent heat exchange in the boundary layer and of the efficiency improvement of the thermal surface protection of ? by0.06 due to the use of hemispherical damping cavities has been established. The proposed method of thermal protection intensifying and numerical analysis of its efficiency will improve the gas turbine engines that are available for different applications of domestic industry for example in power generation sector, aircraft engineering as well as in shipbuilding.

Hemispherical damping cavities, turbulent transport, mathematical modeling, boundary layer, thermal protection.

2018_ 4

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Albert Shamilevich Khusainov, Ulyanovsk State University, Doctor of Science in Engineering; graduated from Ulyanovsk State Technical University; Head of the Department of Design and Service of Automobile named after I.S. Antonov at Ulyanovsk State University; an author of articles, monographs, tutorials, and inventions in the field of simulating, research and optimization of tractor and vehicle constructions. [e-mail: a.s.khusainov@gmail.com]A. Khusainov,

Andrei Anatolevich Glushchenko, Ulyanovsk State Agrarian University, Candidate of Science in Engineering; graduated from Ulyanovsk State Agrarian Institute; Associate Professor of the Departmentof Exploitation of Machineryand Mobile Technological Equipment at P.A. Stolypin Ulyanovsk State Agrarian University; an author of articles, monographs, tutorials, and inventions in the field of simulating, research and optimization of tractor and vehicle constructions. [e-mail: oildel@yandex.ru]A. Glushchenko,

Maxim Anatolevich Volkov, Ulyanovsk State University, Candidate of Sciences in Physics and Mathematics; graduated from Ulyanovsk State University; Dean of the Faculty of Mathematics, Information and Aviation Technologies at Ulyanovsk State University; an author of articles, tutorials, and inventions in the field of the simulating and designing of complex engineering systems and the computer-aided control system development. [e-mail: volkovmax1977@gmail.com]M. Volkov

Developing the Model for Improving the Vehicles’ Operating Characteristics 54_11.pdf

The process of developing the model to improve vehicles’ operating characteristics has been described in the article. The model development is based on the interrelation and reciprocal influence of the main elements of the vehicle. Since the internal combustion engine is the source of energy and the driving force, its characteristics has a direct influence on the operating properties of the vehicle. In its turn, they mainly depend on the nature of the working process course and engine parameters. Therefore, a change in the technical and operational characteristics of the engine will entail a change in the operating characteristics of the vehicle in which it has been installed. The information model of the engine parameters’ influence on operating characteristics of the vehicle allows us to find that, for certain operating time and fixed values of operating modes, an improvement of operating characteristics of the vehicle can be made by changing the technical and operational characteristics of the engine. At the same time, considering the operating model of the internal combustion engine in a form of a specific multidimensional and multilevel system, it was found that the working process in the engine and the design parameters of its mechanisms have the greatest influence on the change in engine parameters. The main work process takes place in the engine cylinder, so the parts of the cylinder-piston group will have the greatest influence on the change in the output parameters of the engine. The use of mathematical modeling in solving this problem allows us to develop a concept of improving the vehicle’s operating characteristics, to optimize the process of choosing the ways to modernize the engine and the vehicle.

Vehicle’s operating characteristics, information model, multidimensional and multilevel system.

2018_ 4

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Aleksandr Kupriianovich Ivanov, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Doctor of Science in Engineering; graduated from the Faculty of Physics of Irkutsk State University; completed his post-graduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’; an author of monographs, articles, and a manual in the field of mathematical modeling of hierarchical real-time computer-aided control systems. [e-mail: mars@mv.ru]A. Ivanov,

Vladimir Aleksandrovich Baboshin, St. Petersburg National Guard Forces Command Military Institute, Candidate of Sciences in Engineering, Associate Professor; graduated from Ulyanovsk Higher Military Command College of Communications; Associate Professor at the Department of Informatics and Mathematics of St. Petersburg National Guard Forces Command Military Institute; an author of articles and inventions in the field of the analysis and synthesis of information systems and mathematical modeling. [e-mail: boboberst@mail.ru]V. Baboshin

Optimal Creation of Control Loops 54_1.pdf

The creation process of control loops in a hierarchical automated control system is determined by a three-dimensional task of optimal distribution of control objects, monitoring software, and environment objects. Different variations of control loops are presented. An algorithm of random searching the optimal distribution of two-dimensional task with control objects and environment objects is described. The analytical approximation of algorithm is given. It was obtained by the orthogonal transformation and was implemented while planning the control objects usage with regard to changing their location in space. Based on the algorithm of the two-dimensional task distribution, the algorithm of random searching the optimal distribution of three-dimensional task for one of the variations when each loop was created by the specified elements that are not included in other loops was developed. Following the results of the undertaken analysis, it was found that task time at high dimensionality could not comply with the dynamic of situation changing. The way of applying the analytical dependence for task time reducing is shown as well as the corresponding algorithm is described. The findings of experimental studies carried out by the use of the developed software are given. The obtained results verify the theory.

Control loop, distribution task, mathematical model, solution algorithm, analytical dependence.

2018_ 4

Sections: Automated control systems

Subjects: Automated control systems, Mathematical modeling.



Aleksandr Nikolaevich Piftankin, FRPC JSC ‘RPA ‘Mars’, Candidate of Science in Engineering; graduatedfromthe Faculty of Mathematics and Mechanics at Ulyanovsk State University; Chief Specialist of FRPC JSC ‘RPA ‘Mars’; an author of papers in the field of process automation of complex radar information processing. [e-mail: mars@mv.ru]A. Piftankin,

Anastasiia Vladimirovna Polovinkina, FRPC JSC ‘RPA ‘Mars’, Candidate of Science in Physics and Mathematics; graduated from the Faculty of Mathematics and Information Technologies at Ulyanovsk State University; Software Engineer at FRPC JSC ‘RPA ‘Mars’; an author of papers in the field of fundamental investigations. [e-mail: mars@mv.ru]A. Polovinkina,

Stanislav Vladimirovich Tokmakov, FRPC JSC ‘RPA ‘Mars’, graduated from the Faculty of Mathematics, Information and Aeronautical Technologies at Ulyanovsk State University; Software Engineer at FRPC JSC ‘RPA ‘Mars’; his research interests include machine learning methods of control systems. [e-mail: mars@mv.ru]S. Tokmakov

Mathematical Model and Algorithm for the Identification Task of Radio- Emitting Objects of Tactical Situation on Data From Ships of Task Force 54_2.pdf

The article presents a mathematical model and algorithm for tasks of radio-emitting objects identification. The identification task partition into component parts is carried out. New approaches to the calculation of the radio-emitting object identification level from geometric and signal features will be found in the article. Authors propose a priority sequence of tasks to be solved based on practice of working with special information. A new mathematical model for constructing the identification evaluation function from signal features is developed. This model is not restricted to the assumption of thelinearity of this function. Algorithms for calculating the threshold values of object identification are presented. An algorithm for the radio object identification is developed under conditions of the computing experiment performed in the MATLAB environment. Following the results of the computing experiment, the algorithm has been defined more exactly, the positive outcomes of using the model have been provided.

Passive radio aids, information identification, object identification level, machine learning method.

2018_ 4

Sections: Automated control systems

Subjects: Automated control systems, Mathematical modeling, Architecture of ship's system.



Aleksandr Kupriianovich Ivanov, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Doctor of Science in Engineering; graduated from the Faculty of Physics of Irkutsk State University; completed his postgraduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’; an author of monographs, articles, and a manual in the field of mathematical modeling of hierarchical real-time computer-aided control systems. [e-mail: mars@mv.ru]A. Ivanov

Distribution Laws of Stochastic Data Volumes on Hierarchical System Objects 53_9.pdf

The article determines analytical dependences of information resource volumes on objects of the hierarchical control system from initial data volumes incoming to the system. The article considers the following variants such as control when initial data is executive orders from an object of high level; and situation data acquisition and analyzing when initial data comes from an object of low level. It is assumed output data volume at each level to be proportional to input data volume. The calculation procedures of distribution laws and numerical characteristics of stochastic data volumes of all objects at known distribution laws of initial data and random conversion ratio of input data into output data are specified. A simulation model of the hierarchical system is created which allows to obtain distribution functions and probability density of stochastic data volumes of all objects based on known numerical characteristics of the initial data. The simulation results are presented that demonstrate the principle possibility of obtaining distribution laws and their approximation by the normal law.

Hierarchical systems, stochastic variables, distribution law, simulating modeling.

2018_ 3

Sections: Mathematical modeling

Subjects: Mathematical modeling, Automated control systems.


Andrei Evgenievich Kukin, FRPC JSC ‘RPA ‘Mars’, Postgraduate Student of the Department of Telecommunication Technologies and Networks of Ulyanovsk State University; graduated from the Information Technology Department of UlSU; Software Engineer of FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of software development for automated command and control systems. [e-mail: mars@mv.ru]A. Kukin,

Aleksandr Nikolaevich Piftankin, FRPC JSC ‘RPA ‘Mars’, Candidate of Science in Engineering, ; graduated from the Faculty of Mechanics and Mathematics at UlSU; Chief Specialist of FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of automation of fighter aircraft control and action planning. [e-mail: mars@mv.ru]A. Piftankin,

Aleksandr Sergeevich Gutorov, FRPC JSC ‘RPA ‘Mars’, Candidate of Science in Engineering; graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; Chief Designer of FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of statistical methods for signal processing. [e-mail: mars@mv.ru]A. Gutorov,

Aleksandr Aleksandrovich Lushnikov, FRPC JSC ‘RPA ‘Mars’, Postgraduate Student of Ulyanovsk Civil Aviation Institute named after Air Chief Marshal B.P. Bugaev; graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; Deputy Chief Designer of FRPC JSC ‘RPA ‘Mars’; an author of articles in the field flight operation safety and automatic flight and traction control of aircraft. [e-mail: a.lushnikov@mail.ru]A. Lushnikov

The Model for Forming the Flight Profile of an Aircraft Using Dynamic Programming Tools 53_10.pdf

The article deals with the process of forming the flight profile of an aircraft. Calculation and selection of the optimal flight profile of aircraft are some of the most common issues in the tasks related to the planning of aviation operations. The flight profile in the coordinates ‘range-altitude’ is a sequence of areas each of which corresponds to a specific program for changing altitude and speed. The construction of the flight trajectory of an aircraft is characterized by the work with a large number of nonlinearly varying dependent parameters and taking into account the restrictions imposed on flights: the permitted echelons of aviation flight altitudes, forbidden zones with unacceptable meteorological conditions, forbidden zones of action of enemy air defenses. These factors make it very difficult to model the specified process. The application of the mathematical apparatus of dynamic programming in solving this problem can allow the most efficient choice of flight modes of aircraft and optimize the process of forming the flight profile as a whole.

Fighter aircrafts, flight profile, optimization algorithm, dynamic programming.

2018_ 3

Sections: Mathematical modeling

Subjects: Mathematical modeling, Architecture of ship's system.


Oleg Vladimirovich Saverkin, FRPC JSC ‘RPA ‘Mars’, graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University with the specialty in Telecommunications Networks and Connecting Systems; Postgraduate Student of UlSTU, Research Engineer of FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of statistical signal processing. [e-mail: saverkin-oleg@mail.ru]O. Saverkin

On the Efficiency of Trajectory Filtering in Fixed Coordinate System 53_11.pdf

The article presents the analysis results of algorithms for estimating the motion parameters of the accompanying objects based on the application of the Kalman filter. It is shown that the application of some known algorithms is associated with the need to perform complex mathematical operations, and under certain conditions can lead to significant errors. It is established that the use of filtering in fixed coordinate system in the algorithm allows taking into account data on the direction and maneuvering of the object thereby increasing the accuracy and tracking stability. At the same time, simplicity of implementation is preserved when using the linear Kalman filter.

Object tracking, trajectory parameters estimation, fixed coordinate system, kalman filter.

2018_ 3

Sections: Mathematical modeling

Subjects: Mathematical modeling, Architecture of ship's system.


Ilia Vladimirovich Zhuikov, Volga State University of Technology, Postgraduate Student; graduated from the Department of Applied Mathematics and Information Technologies of Volga State University of Technology; an author of articles in the field of intelligent test systems. [e-mail: zhuikill@yandex.ru]I. Zhuikov,

Igor Nikolaevich Nekhaev, Volga State University of Technology, Candidate of Science in Engineering, Associate Professor of the Department of Applied Mathematics and Information Technologies of Volga State University of Technology, Head of the e-Learning Center of Volga State University of Technology; an author of scientific papers in the field of soft computing, fuzzy logic, and e-learning. [e-mail: nehaevin@volgatech.net]I. Nekhaev

Application of Lp-structures When Constructing the Intelligent Test System 53_8.pdf

Tasks of competence level are complex tasks for solving which is not enough only knowledge, so learning and testing systems should be able to simulate structures of gradually complicating tasks. In some cases, these structures can be modeled using mathematical lattices describing the structure of cases with additional attitude of complication. This article describes a model of the lattice of non-complication of cases for the subject domain. A method for specifying and constructing such lattice using finite LP-structures and applying operations of transitive closure on the lattice of clarification of case situations is proposed. In conclusion, the example of using this approach to construct intelligent test system of the ability to perform solve tasks of comparing numbers from the domain of arithmetic of natural numbers is considered. It is shown that this approach could be used for further analyzing the results of solutions and to construct a more pragmatic lattice of complication of cases and test tasks.

Lp-структура, competency-based approach, intelligent test system, lattice of complication of cases, lp-structure.

2018_ 3

Sections: Information systems

Subjects: Information systems, Mathematical modeling, Artificial intelligence.


Mikhail Konstantinovich Samokhvalov, Ulyanovsk State Technical University, Doctor of Sciences in Physics and Mathematics, Professor; graduated from the Faculty of Physics of Saratov State University named after N.G. Chernyshevsky; Professor of the Department of Electronic Instrumentation Design and Technology at Ulyanovsk State Technical University; an author of articles and monographs in the field of optoelectronics. [e-mail: sam@ulstu.ru]M. Samokhvalov

Modeling the Brightness Dynamics of Thin-film Electroluminescent Capacitors 53_12.pdf

The processes of excitation of luminescence of thin-film electroluminescent capacitors within the model of direct shock excitation of activator centers in the luminophore are analyzed. Mathematical modeling of the dynamics of the brightness of radiation sources is carried out on the basis of the solution of the nonlinear ordinary differential equation describing the kinetics of changes in the density of excited centers of luminescence in the phosphor film. A program for numerical solution of nonlinear equation of luminance dynamics by Runge-Kutt method using a computer is developed. It is shown that the duration of transient processes determined by the brightness waves reaches 8-10 periods of applied alternating voltage. In order to obtain high brightness levels of electroluminescent indicators, it is necessary to excite the indicator elements with suites of alternating voltage pulses, the duration of which must be at least the time of reaching the steady-state operation.

Thin film electroluminescent capacitor, brightness, phosphor, electroluminescence, indicator.

2018_ 3

Sections: Electrical engineering and electronics

Subjects: Electrical engineering and electronics, Mathematical modeling, Information systems.


Rudolf Aleksandrovich Brazhe, Ulyanovsk State Technical University, Doctor of Sciences in Physics and Mathematics, Professor, Head of the Department of Physics at Ulyanovsk State Technical University; graduated from the Faculty of Physics of Saratov State University named after N.G. Chernyshevsky; an author of numerous scientific papers, monographs, tutorials, and invention certificates; has research interests in the field of wave processes, meta- and nanomaterials, nanoelectronics, and control system elements [e-mail: brazhe@ulstu.ru]R. Brazhe,

Andrei Fedorovich Savin, RITG, LLC, graduated from the Faculty of Physics and Mathematics of Ulyanovsk State Teachers University named after I.N. Ulyanov; Lead Analyzer of RITG, LLC; an author of publications in the field of mathematical modeling of nanoscale radioengineering components. [e-mail: a_f_savin@mail.ru]A. Savin

Electric Characteristics of Sensing Elements of Resonance Nanosensors for Robotic Systems Based on Spiral Nanotubes 53_13.pdf

Sensing devices of nanosensors for robotic and biorobotic systems based on separate spiral nanotubes draw an attention of researchers both as from the point of view of opportunities of their design with the use of the temporary nanotechnologies as from the point of view of their high sensitivity to external influences. Owing to deformation of nanocoil as a result of external influence, its impedance changes, and a shift of a resonant frequency appears. It is shown that the resonant frequency of such nanosolenoids can reach tens petahertz, and its shift can make the tenth shares of petahertz as a result of nanocoil’s length change for 1 percent.

Spiral nanotubes, resonant nanosensors, impedance properties.

2018_ 3

Sections: Electrical engineering and electronics

Subjects: Electrical engineering and electronics, Mathematical modeling.


Rudolf Aleksandrovich Brazhe, Ulyanovsk State Technical University, Doctor of Sciences in Physics and Mathematics, Professor, Head of the Depart-ment of Physics at Ulyanovsk State Technical University; graduated from the Faculty of Physics of Saratov State University named after N.G. Chernyshevsky; an author of numerous scientific papers, monographs, tutorials, and invention certificates; has research interests in the field of wave processes, meta- and nanomaterials, nanoelectronics, and control system elements. [e-mail: brazhe@ulstu.ru]R. Brazhe

Mechanical Characteristics of Electromechanical Resonators Based on Spiral Nanotubes 53_14.pdf

In electromechanical resonators shaped as spiral nanotubes, two types of resonances such as an electrical resonance like in serial RLC circuit and the mechanical one like in a coil spring can exist. Both types of resonances can be used for designing the sensing devices of resonance nanosensors for robotic and biorobotic systems though their resonant frequencies strongly differ from each other. This paper deals with a comparison of electrical and mechanical characteristics of the electromechanical resonators based on coiled nanotubes. It is shown that the frequency of the displacement resonance in such mechanical oscillators can reach tens of gigahertz while the current resonance occurs at the frequencies reaching tens petahertz. The amplitude-frequency and phase-frequency characteristics of forced oscillations in the considered nanospirals are brought. It is shown that their mechanical figure of merit does not exceed several units and is comparable with the electrical one because of grate attenuation.

Spiral nanotubes, electromechanical resonator, resonance characteristics.

2018_ 3

Sections: Electrical engineering and electronics

Subjects: Electrical engineering and electronics, Mathematical modeling.


Innokentiy Vasilyevich Semushin, Ulyanovsk State University, Doctor of Science in Engineering, Professor of Information Technology at Ulyanovsk State University. Memberships in Professional Organizations: IEEE Society; IEEE Control Systems Society; “Russian Professorial Assembly”. Author of papers, monographs and textbooks; holds patents for inventions. Field of Interest: systems theory, control. [e-mail: kentvsem@yandex.ru]I. Semushin

Towards Robust Riccati Iterations for Lqg-optimal or Parameter-adaptive Estimation and Control Processes 52_7.pdf

The paper aims at the development of robust and efficient computational algorithms for stochastic linear control based on scalarized square-root implementations. In the capacity of starting point, it uses the classical (formal) solution to the control problem known from the three-decker monography Stochastic models, estimation, and control, Academic Press, 1979-1982, by Peter S. Maybeck. The mutually time-inverse Riccati iterations being a core part of the solution, are interpreted in a uniform notation as the two-stage update processes. For them, a transition to the two kinds of scalarized algorithms - direct and inverse, is performed to introduce into consideration a scalarized filter and scalarized regulator and avail ourselves of the opportunity to go into the question of numerically stable square-root computation designs for Riccati iterations. The paper demonstrates one possible configuration in the form of the Potter-style algorithm. That establishes the new direction in constructing robust LQG-regulators for control as being based on many advances in robust filtering.

Lqg-control, square-root algorithms, finite-horizon discrete-time control, scalarization.

2018_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Viacheslav Andreevich Sergeev, Ulyanovsk Branch of the Kotel’nikov Institute of Radioengineering and Electronics of the Russian Academy of sciences, Doctor of Engineering, Associate Professor; graduated from the Faculty of Physics of Gorky State Technical University; Head of Ulyanovsk Branch of the Kotel’nikov Institute of Radioengineering and Electronics (IRE) of the Russian Academy of sciences (RAS); Head of the Department of Radioengineering, Opto and Nanolectronics of Ulyanovsk State Technical University at Ulyanovsk Branch of the Kotel’nikov IRE; an author of monographs, articles, and inventions in the field of researching and simulating semiconductor device and integrated circuit performance, and measuring their thermal characteristics. [e-mail: sva@ulstu.ru]V. Sergeev,

Sergei Evgenevich Rezchikov, Ulyanovsk Branch of the Kotel’nikov Institute of Radioengineering and Electronics of the Russian Academy of sciences, graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; Postgraduate Student of the Base Department of Radioengineering, Opto and Nanolectronics at the Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS; an author of articles in the field of measurement automation and noise characteristics research of semiconductor devices and integrated circuits. [e-mail: s.rezchikov@ulstu.ru]S. Rezchikov

The Optimization of Procedures for Measuring the Semiconducter Devices’ Paramters of Low-freqency Noise Influenced By White Noise 52_8.pdf

The brief analysis of techniques for measuring the parameters of low-frequency (LF) noise with 1/f?-type spectrum has been proposed. The estimation of measurement error of power spectral density (PSD) and ?-rays spectrum index are given by taking into account the influence of white-noise level. Based on the results of noise spectral power density measurements implemented at three frequencies when series and parallel filtering, authors propose procedures of measuring the index of ?-rays spectrum that minimize a total inaccuracy of ? value determination. The essence of optimization in case of serial filtering reduces to the optimum distribution of preset overall measurement time between measurements at the first, second and additional frequencies in case of the given frequency ratio, and when parallel filtering, to the determination of the optimum frequency ratio of measuring the noise PSD in case of the preset overall measurement time. A systematic measurement error of ? value has been estimated while implementing of various measurement procedures depending on ? value. The estimations are presented in the article. It is shown that the optimization of measuring procedures allows to reduce an error of the ? value determination by 1.5 to 2 times.

Low-frequency noise, power spectral density, index of spectrum form, measurement, error, optimum procedures.

2018_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Iurii Dmitrievich Ukraintsev, Ulyanovsk State University, Candidate of Engineering; graduated from the Faculty of Radiocommunications of the Leningrad Military Academy of Communications; Associate Professor of the Department of Telecommunication Technologies and Networks at Ulyanovsk State University; an author of articles, monographs inventions in the field of statistical analysis and synthesis of telecommunication systems. [e-mail: 9019471930@mail.ru]I. Ukraintsev,

Vladimir Viktorovich Kalnikov, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Candidate of Engineering, Associate Professor; graduated from Radioengineering Faculty of Kiev Higher Military Engineering College of Communications; Chief Specialist at FRPC JSC ‘RPA ‘Mars’; specializes in the field of special-purpose control system design, creation of communication and data exchange systems; an author of articles and inventions in the field of designing the distributed control systems of special-purpose, communication and data exchange systems. [e-mail: mars@mv.ru]V. Kalnikov

An Alternate Bayesian Approach to the Detection of an Adaptive Decision Threshold Scheme for the Receiver At Decameter Radio Links 52_9.pdf

The article deals with an approach to the determination of the decision threshold scheme of a receiving device in decameter radio link, which implements the alternative Bayesian method. In contrast to the classical approach when the decision threshold scheme is determined with the assumption that the probability density function (PDF) of the received signal is subject to the Gaussian low, an approach based on the current recovery of instantaneous values of the received signal envelope in each distribution path is proposed. The PDF recovery algorithm is based on the nonparametric Parzen-Rosenblatt density estimation method. The estimating is carried out during a specified communication session. In this case, the most probable values of the signal (mode) are determined if the noise interference is absent and present, the decision threshold scheme is established in accordance with the real situation on the communication line. Then, on the basis of the mode shift, a decision is made about the signal-error probability. On the basis of simulation modeling, the efficiency of the approach is shown when operating at decameter radio links working under nonparametric prior uncertainty relative to signals and interference.

Signal depression, instantaneous values of the received signal envelope, parzen method of the probability density estimation, mode, decision threshold scheme of a receiving device, error probability.

2018_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Irina Aleksandrovna Sedykh, Lipetsk State Technical University, Candidate of Physics and Mathematics; graduated from the Faculty of Automation and Informatics of Lipetsk State Technical University (LSTU); Associate Professor of the Mathematics Department at Lipetsk State Technical University; an author of monographs and articles, owner of certificates of registration of the computer programs in the field of neighborhood modeling of dynamic systems. [e-mail: sedykh-irina@yandex.ru]I. Sedykh,

Evgenii Sergeevich Anikeev, Lipetsk State Technical University, graduated from the Faculty of Physics and Engineering of Lipetsk State Technical University (LSTU); Master’s Degree Student at Lipetsk State Technical University; an author of articles, owner of certificates of registration of the computer programs in the field of neighborhood modeling of dynamic systems. [e-mail: evgenij-anikeev@yandex.ru]E. Anikeev

Hierarchical Colored Time Petri Nets on the Basis of Neighborhood Models 52_10.pdf

The article describes the definition and algorithm for the operation of common labeled Petri nets. Some varieties of Petri nets such as timed, colored and colored timed Petri nets are shown. The proposed hierarchical colored Petri nets based on neighborhood models are an extension of the considered classes. The hierarchy in this system is represented by a set of positions and transitions, in each of which a neighborhood model can be embedded. The concept of a dynamic neighborhood model is also given in this paper. Adding a hierarchy allows to analyze additional properties of simulated dynamic distributed processes. For colored Petri nets with hierarchical transitions, an operation algorithm is formulated that is designed and implemented as a Java program. The peculiarity of the models under consideration is the synchronization of the operating time of the external and internal systems. In addition, the control signals of the embedded neighborhood model depend on the change in the current marking of the Petri net when a hierarchical transition occurs. An example of the functioning of a Petri net with a hierarchical transition is given.

Modelling, colored timed petri net, hierarchical petri net, algorithm, neighborhood model.

2018_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Dmitrii Anatolevich Zhukov, Ulyanovsk State Technical University, graduated from the Faculty of Information System and Technologies of Ulyanovsk State Technical University; Postgraduate Student of the Department of Applied Mathematics and Computer Science; an author of proceedings in the field of the statistical methods and machine learning. [e-mail: zh.dimka17@mail.ru]D. Zhukov,

Vladimir Nikolaevich Kliachkin, Ulyanovsk State Technical University, Doctor of Engineering; graduated from the Mechanical Faculty of Ulyanovsk Polytechnic Institute; Professor at the Department of Applied Mathematics and Informatics of Ulyanovsk State Technical University; an author of scientific papers in the field of reliability issues and statistical methods. [e-mail: v_kl@mail.ru]V. Kliachkin

The Effect of the Control Sample Volume on the Quality of Diagnostics of the Technical Object State 52_11.pdf

He problem of predicting the serviceability of a technical object in terms of its performance is considered. The source data are the known results of the evaluation of the state of an object based on the results of the previous operation: If the specified values of controlled indicators technical system intact or defective. Such a problem can be solved by methods of machine learning, it reduces to a binary classification of the states of the object. The quality of diagnostics can significantly depend on many factors: the method of training, the correct allocation of factors characterizing the operation of the object, the volume of the sample, and others. The work studies the effect of the control sample volume on the quality of diagnosis, estimated by the number of mis-predicted states using the cross-validation method. The tests were carried out in the Matlab package, ten different training methods were used: logistic regression, support vector method, decision tree bugging, and others. It is shown that the correct choice of the proportion of the control sample can improve the diagnostic quality to 5-7%.

Technical diagnostics, serviceability of the indicator of functioning, machine learning, control sample, cross-validation.

2018_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Dmitrii Vladimirovich Samoilenko, Mozhaisky Military Space Academy, Candidate of Engineering; graduated from Shtemenko Krasnodar Highest Military School; Postdoctoral Student of Mozhaisky Military Space Academy; an author of articles, inventions in the field of information security, crypto code information security systems, modular arithmetic of multidimensional numerical systems. [e-mail: 19sam@mail.ru]D. Samoilenko

Increasing of information survivability of the group of robotic engineering complexes under destructive attack of the violator52_1.pdf

A group of robotic engineering complexes such as unmanned aerial vehicles (UAVs) operating under an intelligent jamming attack of a violator is considered. In order to meet these operating conditions, a subsystem of cryptographic code protection of information based on the aggregated application of block encryption algorithms and polynomial noise-immune coding methods has been proposed. Further investigation disclosed that providing the subsystem under consideration with new properties ensuring the restoration of true encrypted information that is subjected to the destructive impact of the violator i.e. imitation proof as well as a regenerative process activation ensuring the integrity (restoration) of data i.e. information survivability are subsystem features. For the case of physical delivery of the information extracted by UAV complexes, it is suggested that the ensemble of storage devices onboard various UAVs with common functions be considered as a single system of storage devices with a subsystem of cryptographic code transformation of information. In this case, even the physical loss of the i-th UAV grouping as a storage node does not lead to complete or partial loss of data (including distorted data) and allows initiating the procedure for their recovery.

Group of unmanned aerial vehicles, cryptography, noise-immune coding, imitation proof, information survivability, information integrity.

2018_ 2

Sections: Mathematical modeling

Subjects: Automated control systems, Mathematical modeling.


Aleksei Aleksandrovich Gudkov, the Marshal Budjonny Military Academy of Signal Corps, Master’s Degree; graduated from the Cherepovets Military Engineering Institute of Radioelectronics; the Marshal Budjonny Military Academy of Signal Corps; Adjunct of the Marshal Budjonny Military Academy of Signal Corps; an author of proceedings and publications in the field of an assessment of electromagnetic accessibility and calculation of structural stability of hierarchical systems. [e-mail: gudkov_aa@rambler.ru]A. Gudkov,

Sergei Romanovich Malyshev, the Marshal Budjonny Military Academy of Signal Corps, Candidate of Engineering, Associate Professor; graduated from Mozhaisky Military Engineering Institute; Honored Inventor of the Russian Federation; Associate Professor of theMilitary Academy of communications an author of tutorials, articles and inventions in the field of modern theoretical aspects of radiomonitoring and radioengineering control. [e-mail: malishevsr56@ya.ru]S. Malyshev,

Sergei Vasilevich Krasnov, Graduate School of Business Management Technologies of St. Petersburg Polytechnic University, Candidate of Engineering, Associate Professor; graduated from the Ulyanovsk Higher Military Command School of Communications; an adjunct of Ulyanovsk Military Engineering Communication School; Associate Professor of Graduate School of Business Management Technologies of St. Petersburg Polytechnic University; an author of more than 50 scientific works in the field of design and implementation of information systems and technologies. [e-mail: hsm.krasnov@gmail.com]S. Krasnov

Parametric Synthesis of Radiomonitoring and Radiotechnical Control Systems Based on the Formal Approach 52_2.pdf

The task of synthesizing the radiomonitoring systems in the theory of complex systems is the task of estimating the optimality of the system or the problem of optimizing the system. The solution of the synthesis problem consists in considering a number of optimization problems, each of which characterized by the use of various optimality criteria. The diversity of radio electronic systems and the specific features of their functioning do not allow forming a unified methodology that allows the synthesis of any radiomonitoring system. In this regard, the synthesis of a particular system is an individual process. The concept of the synthesis of radiomonitoring system based on the general principles of the system approach in the synthesis of a complex system of any purpose, and, at the same time, includes a number of distinctive features due to the features of the system synthesized. The synthesis of the systems under consideration should include two stages: structural and parametric synthesis. At the first stage, indicators of results, requirements for results, criteria for assessing the quality of results are set. The second stage determines the efficiency index, the requirements for the level of efficiency, the criterion for assessing the effectiveness.

Parametric synthesis, optimization, radiomonitoring system.

2018_ 2

Sections: Mathematical modeling

Subjects: Automated control systems, Mathematical modeling.


Iurii Petrovich Egorov, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Doctor of Engineering, Professor; graduated from the Faculty of Radioengineering at the Admiral Makarov Leningrad Higher Maritime School of Engineering; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’; specializes in the field of macro-design of large-scale information management systems; an author of monographs, articles, inventions in the field of computer-aided control systems design. [e-mail: yupe@mail.ru]I. Egorov,

Anatolii Ivanovich Piatakov, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Candidate of Engineering; graduated from the Marshal Budjonny Military Academy of Signal Corps; completed his postgraduate studies ibidem; Chief Specialist of FRPC JSC ‘RPA ‘Mars’; specializes in the field of in organization and creation of discrete messages transmitting systems; an author of articles in the field of the automation complexes reliability and data communication. [e-mail: uljanovsk-anatol@mail.ru]A. Piatakov,

Lilia Irfanovna Suleimanova, Federal Research-and-Production Center Joint Stock Company ‘Research-and-Production Association ‘Mars’, Candidate of Engineering; graduated from the Power Engineering Faculty of Ulyanovsk State Technical University; Lead Engineer at FRPC JSC ‘RPA ‘Mars’; an author of articles and inventions in the field of heavy DC detector means. [e-mail: suleimanova.lili@mail.ru]L. Suleimanova

Estimation of Hardware and Software Complex Readiness to Solve the Functional Tasks 52_3.pdf

N view of the increasing complexity of performed hardware and software functions of automated management systems, designers focus on the task to determinate the probability of hardware and software availability for a time intended for solving the functional objective. The article deals with the problems of reliability prediction and estimation of hardware and software readiness to solve the tasks. Authors offer a model of hardware and software presented as a functional part set. The things that improving the accuracy of estimation of the hardware and software readiness to solve functional tasks are justified. Authors present an operational availability factor chosen as a key characteristic of the hardware and software readiness to solve functional tasks. It is calculated on the basis of both current and statistical reliability indices of system components that make the functional parts. A prediction algorithm for the loading of central processor unit, RAM and external memory of the computer system is proposed. It uses an effect of exponential smoothing of statistical data before the period of prediction. The recommendations for operators and operating personnel on the practical application of methods proposed are presented in the article.

Reliability, reliability evaluation, functional reliability, software and hardware reliability, reliability performances.

2018_ 2

Sections: Mathematical modeling

Subjects: Automated control systems, Mathematical modeling.


Aleksandr Kupriianovich Ivanov, Federal Research-and-Production Center Joint Stock Company ‘Research-and- Production Association ‘Mars’, Doctor of Engineering, Honoured Worker of Science and Engineering of the Ulyanovsk Region; graduated from the Faculty of Physics at Irkutsk State University; completed his postgraduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research-and- Production Association ‘Mars’; an author of monographs, articles, and a manual in the field of mathematical modeling of hierarchical real-time computer-aided control systems. [e-mail: mars@mv.ru]A. Ivanov

Mathematical Models of Hierarchical Systems Information Space 51_7.pdf

The article deals with the ability of the mathematical physics methods application to the modeling of hierarchical systems information space. The information space is created with the situation information flows from objects of the lowest hierarchy level and the arrangement flows from upper objects. Spatial coordinates reproduce the hierarchical levels and the structural units of objects. A knowledge level at a certain place and in a particular time is selected as overall performance of information space. A two-dimensional model of noninteracting information flows is built. The model is created with a set of parabolic equations that reflect the data distribution through the structural units of objects of different hierarchy levels. The application of the partition method for solving problems under homogeneous and nonhomogeneous boundary conditions is described. The examples of information wave distribution in a system at periodic external interferences are provided. The two-dimensional model of interacting information flows is represented by partial differential equations with two spatial coordinates. The problem-solving procedure in stationary and nonstationary cases under certain boundary conditions and external interferences is shown.

Hierarchical systems, information space, equations in mathematical physics, partition method.

2018_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Sergei Vasilevich Krasnov, Graduate School of Business Technologies of Peter the Great St. Petersburg Polytechnic University, Candidate of Engineering; graduated from the Ulyanovsk Higher Military Command School of Communications, an adjunct of Ulyanovsk Higher Military Engineering Communication School. Associate Professor of Graduate School of Business Technologies of Peter the Great St. Petersburg Polytechnic University; an author of more than 50 works in the field of design and implementation of information systems and technologies. [e-mail: hsm.krasnov@gmail.com]S. Krasnov,

Sergei Mikhailovich Sergeev, Graduate School of Trade and Services of Peter the Great St. Petersburg Polytechnic University, Candidate of Engineering, Associate Professor; graduated from Leningrad State University named after A.A. Zhdanov; Associate Professor of Graduate School of Trade and Services of Peter the Great St. Petersburg Polytechnic University; an author of more than 100 papers in the field of mathematical modeling in economics and management. [e-mail: sergeev2@yandex.ru]S. Sergeev,

Svetlana Alekseevna Krasnova, the Marshal Budjonny Military Academy of Signal Corps, graduated from Ulyanovsk State Technical University; Senior Lecturer of the Marshal Budjonny Military Academy of Signal Corps; an author of more than 20 papers in the field of economics and management. [e-mail: k.svetlana67@mail.ru]S. Krasnova

Mathematical Modeling of 3pl Processes of the Distribution Terminal 51_8.pdf

Major logistics centers such as ports require continuous management of logistic flows in order to meet the needs of various commercial structures. The article deals with the objective of logistics flows modeling of such centers presented in the form of two-stage inventory systems. The formation of the mathematical model is described involving the methods of description of stochastic processes of commodity masses passage dynamics. As constraints, herewith may be the time constraints. The mathematical model described in the article allows to solve the problem of determining optimal goods` control of flows in a distribution center. The calculations allowing to predict the feasibility of stock forming on the specific demand position were carried out. It gives an opportunity to optimize both maintenance costs and the space volume. The work presents the calculations of the developed mathematical model illustrated with an example of the Kaliningrad seaport. The calculations allow to identify the presence of significant resources to improve such indicators as intensity of warehouse volume`s usage, load uniformity, damages reduction by reason of excess of the maximum shelf life of production.

Transport and logistics center, optimization of store inventory, two-level warehousing system.

2018_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Iulia Evgenevna Kuvaiskova, Ulyanovsk State Technical University, Candidate of Engineering, Associate Professor; graduated from the Faculty of Economics and Mathematics of Ulyanovsk State Technical University; Associate Professor of the Department of Applied Mathematics and Informatics at Ulyanovsk State Technical University; an author of papers in the field of time series analysis, fuzzy logic and technical diagnostics. [e-mail: u.kuvaiskova@mail.ru]I. Kuvaiskova,

Anna Aleksandrovna Aleshina, SimbirSoft Company, Candidate of Engineering, graduated from the Faculty of Economics and Mathematics of Ulyanovsk State Technical University; Software Developer at SimbirSoft Company; an author of papers in the field of time-series modeling and forecasting. [e-mail: a2nia@mail.ru]A. Aleshina,

Kseniia Andreevna Fedorova, Ulyanovsk State Technical University, Candidate for the Master’s Degree at of the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University; an author of papers in the field of fuzzy logic and technical diagnostics. [e-mail: k.a.fedorova@bk.ru]K. Fedorova

Information and Mathematical System of Support of Decision-making on Management of the Object Based on Forecasting of Its Technical State 51_9.pdf

This article describes the developed information and mathematical system designed to support the decision-making on the management of an object on the basis of analysis and forecasting of its technical state. This system allows to obtain adequate mathematical models and forecasts of the monitored indicators of a technical object in an automatic mode. In this case, the model parameters are corrected by a pseudo-gradient procedure; the stability of the object is analyzed; fuzzification of numerical values of object state indicators is performed, as well as a qualitative assessment of the projected technical state of the object in the form of a fuzzy term with the degree of truth of the predicted result. To demonstrate the effectiveness of the system developed, the diagnostics of the hydrounit functioning was carried out according to the results of vibration measurements.

Forecasting, decision support system, technical object.

2018_ 1

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Andrei Vladimirovich Masloboev, Institute for Informatics and Mathematical Modeling at the Kola Science Center of the Russian Academy of Sciences, Doctor of Engineering, Associate Professor, Senior Researcher of the Institute for Informatics and Mathematical Modeling at the Kola Science Center of the Russian Academy of Sciences; graduated from the Department of Informatics and Applied Mathematics of Petrozavodsk State University; an author of 160 publications in the field of multi-agent systems, system dynamics, decision support systems, socio-economic system management, regional security. [e-mail: masloboev@iimm.ru]A. Masloboev,

Vladimir Aleksandrovich Putilov, Institute for Informatics and Mathematical Modeling at the Kola Science Center of the Russian Academy of Sciences, Doctor of Engineering, Professor, Honoured Science Worker of the Russian Federation, Research Supervisor of the Institute for Informatics and Mathematical Modeling at the Kola Science Center of the Russian Academy of Sciences; graduated from the Leningrad Institute of Aerospace Instrumentation; an author of 215 publications, including, 10 monographs in the field of system dynamics model’ functional-goal synthesis and analysis, computer-aided design of information technologies for complex ill-formalizable system control. [e-mail: putilov@iimm.ru]V. Putilov

Multi-agent Modeling Environment of Regional Security Control Processes: Design Principles and Automation Components 51_1.pdf

For practical applications and problem-solving of regional security management information support on the basis of combined simulation-expert modeling, a special-purpose software system «Network-centric managerial structures synthesizer» has been developed. Software system provides agent-based model automated synthesis and analysis of the networked virtual managerial structures for security support under crisis situations in socio-economic sphere of regional development. System simulation and software toolkit allows alternative modeling scenario spectrum formation, analysis and extension of regional crisis situations. That provides managerial decision-making information probability and validity in the field of regional security support. Software system application provides the possibility for modeling environment operative configuration by the specific features of management problem and computing experiments implementation high variability.

Multi-agent system, simulation, bundled software, information support, network-centric control, regional security.

2018_ 1

Sections: Automated control systems

Subjects: Automated control systems, Mathematical modeling.


Andrei Mikhailovich Ivantsov, Ulyanovsk State University, Candidate of Engineering; graduated from Leningrad Higher Military Engineering School of Communications, Military Academy of Communications; finished his postgraduate studies in Military Academy of Communications; Associate Professor at the Department of Information Security and Control Theory of Ulyanovsk State University; an author of articles and textbooks in the field of information security. [e-mail: iwanzow@mail.ru]A. Ivantsov,

Sergei Mikhailovich Ratseev, Ulyanovsk State University, Doctor of Physics and Mathematics; Associate Professor; graduated from the Faculty of Mechanics and Mathematics of Ulyanovsk State University; Professor at the Department of Information Security and Control Theory of Ulyanovsk State University; an author of articles and textbooks in the field of cryptographic methods of information protection, PI-algebras. [e-mail: ratseevsm@mail.ru]S. Ratseev

On Application of Elliptic Curves in Some Verifiable Protocols of Secret Sharing 000_4.pdf

The threshold secret sharing is the secret sharing with n participants for the structure of access in which all coalitions supporting at least t participants for some t are authorized, and all coalitions with smaller number of participants are unauthorized. The special role is given to perfect secret sharing schemes in which shares of a secret of any unauthorized coalition don't allow to obtain any information on value of a secret. One of well-known perfect secret sharing schemes is the Shamir's one. In the Shamir's scheme, the dishonest dealer can distribute incompatible shares from which they will never recover the initial secret to participants. In this case, the checked secret sharing schemes are applied. Such schemes allow each participant to check compatibility of the share with shares of a secret of other participants. For this purpose, complementary to a secret share, some additional information allowing to check the given secret share is transferred to each participant. The well-known checked schemes are Feldman-Shamir's one and Pedersen-Shamir's one. Pedersen-Shamir's one is perfect. Modifications of Feldman-Shamir and Pedersen-Shamir schemes on elliptic curves which application allows to reduce considerably the sizes of parameters of protocols and to increase their cryptography firmness are considered.

Secret sharing, shamir’s scheme, elliptic curve.

2017_ 3

Sections: Mathematical modeling

Subjects: Mathematical modeling, Automated control systems.


Dmitrii Vladimirovich Kharkin, Ulyanovsk Instrument Manufacturing Design Bureau Joint-Stock Company, graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University; Postgraduate Student at the Department of Measuring and Computing Complexes Department of Ulyanovsk State Technical University; Head of the Research Laboratory at Ulyanovsk Instrument Manufacturing Design Bureau Joint-Stock Company; an author of articles in the field of illumination engineering. [e-mail: hardim@mail.ru]D. Kharkin,

Ivan Petrovich Efimov, Ulyanovsk State Technical University, Candidate of Engineering; graduated from Ulyanovsk Polytechnic Institute with a specialty in Aircraft Instrument Engineering; Senior Lecturer of the Measuring and Computing Complexes Department of Ulyanovsk State Technical University; an author of articles, inventions in the field of primary pressure sensors of aircraft air data measuring systems. [e-mail: eip@ulstu.ru]I. Efimov

The Mathematical Model and the Creation Method of the Illuminations Module of Liquid Crystal Panels on the Basis of Colored Leds 000_5.pdf

The article considers construction of a module of illumination of liquid crystal panels on the basis of colored RGB LEDs. The algorithms of LED control for providing required illumination characteristics of liquid crystal modules are described. The algorithms’ adequacy was examined experimentally. The article also covers questions of influence of some characteristics of LEDs and constructive elements on illumination efficiency factor. The obtained mathematical models and algorithms allow to automate the development process of LED illuminations with forecasted characteristics. The ability to select elements with required constructive parameters for the specific LED illumination at the initial stage of development is appeared.

Mathematical model, led illumination, disperser, control algorithm.

2017_ 3

Sections: Mathematical modeling

Subjects: Mathematical modeling, Automated control systems.


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