A Measuring system based on sensors of magnetic field and temperature with digital signal processing

Anatoliy Druzhynin, Stepan Nichkalo, Yevhen Berezhanskyi

Lviv Polytechnic National University, Ukraine
druzh@polynet.lviv.ua

Abstract: The paper deals with the investigation of electro-physical properties of Si1-xGex whiskers; the possibility of their use as sensitive elements in magnetic field and temperature sensors is considered. The possible ways of improving the output characteristics of these sensors, particularly through the use of a measuring system with digital signal processing.
Key words: whisker, sensor, magnetic field, digital processing.

Кылькысть посилань 10

MAGNETIC METAMATERIALS AS PERSPECTIVE MATERIALS OF RADIOELECTRONICS

Anatoliy Rinkevich1, Mikhail Samoylovich2, Aleksey Belyanin2, Aleksandr Bagdasaryan3

1Institute of Metals Physics, Ural Branch of the Russian Academy of Sciences, Russia
2Technomash Central Research Technological Institute, Russia
3Kotel’nikov Institute of Radioengineering and Electronics (IRE) of Russian Academy of Sciences, Russia
rin@imp.uran.ru, samoylovich@technomash.ru, bagdassarian@mail.ru

Abstract: Electromagnetic properties of 3D-nanocomposites based of the opal matrixes containing particles of one or two transitive metals are investigated. Phase analysis of the nanocomposites is carried out. Microwave measurements are executed in the frequency interval of 26-38 GHz. Field dependences of the factors of passage and reflexion are obtained. Spectra of a magnetic resonance and antiresonance are restored. Frequency dependences of an amplitude of the resonance and antiresonance are obtained. It is established, that in the nanocomposites containing particles of two transitive metals, the magnetic resonance amplitude is much larger than in the nanocomposites containing particles of one metal.
Key words: opal matrix, metamaterials, microwave properties.

Кылькысть посилань 13

CENTENARY OF ACADEMICIAN IVAKHNENKO BIRTH

Academician Oleksiy Hryhorovych IVAKHNENKO (1913-2007)

Joint conference Computational Problems of Electrical Engineering And Advanced Methods of the Theory of Electrical Engineering

Acceleration of the parameters identification for dynamic models cONSTRUCTion using parallelization

Liliana Byczkowska-Lipińska1, Petro Stakhiv2, Yuriy Kozak2

1Technical University of Łódz, Poland; 2Lviv Polytechnic National University, Ukraine
lilip@ics.p.lodz.pl, petro.stakhiv@p.lodz.pl , ykozak@mail.ru

Abstract: Construction of mathematical models for nonlinear dynamical systems using optimization requires significant computation efforts to solve the optimization task. This makes it reasonable to use parallelization of calculations for optimization task solving, especially taking into account current tendency for increasing the number of CPU cores in a single chip. The effectiveness of particular parallel implementation of optimization process is the subject of investigation in this paper.

Key words: macromodels, optimization, parallelization.

Кількість посилань 6

PREPARATION OF PAPERS FOR CPEE (FONT: Times new roman, TYPE SIZE: 14, UPPERCASE LETTERS, BOLD, INTERVAL BEFORE AND AFTER: 12 PT, STYLE Title)

First and last names of authors (font: Times New Roman, type size 12, line spacing: 1,1; style Closing)
Affiliation (font: Times New Roman, type size 10, line spacing: 1.1; style Affiliation)
E-mail (шрифт Times New Roman, type size 10, line spacing 1.1; style Affiliation)

Abstract: These instructions give you guidelines for preparing papers for СРЕЕ. The abstract of a submitted paper should reflect the structure of the paper and include an introduction, a purpose, objectives, the description of methods, results, and a conclusion. It should also briefly present the essence of the work and its novelty. The abstract should have the structure specified above in compliance with SCOPUS requirements and consist of no more than 50 words.
Key words: should reflect the content of the work, be specific to an industry pertaining to the presented work, and comprise no more than five semantic concepts.

THERMOSTRESSED CONDITION AND LOAD-CARRYING CAPACITY OF NON-FERROMAGNETIC CONDUCTIVE PLATES UNDER THE ACTION OF ELECTROMAGNETIC PULSES

Roman Musiy
Lviv Polytechnic National University, Ukraine
musiy@polynet.lviv.ua

Abstract: The paper describes a mathematical model of elastic deformation of non-ferromagnetic conductive bodies under the action of pulsed electromagnetic fields (EMF), which takes into account the adiabatic character of processes of heating and deformation of conductive bodies by pulsed electromagnetic fields. Within this model, the dynamic problem of thermo-mechanics has been formulated for a non-ferromagnetic conductive planar layer under the action of pulsed electromagnetic fields. A technique of approximate solution to the formulated problem, that applies a cubic polynomial approximation of all key functions’ distributions with respect to a thickness coordinate, has been proposed. The solution to the problem under consideration in case of homogeneous electromagnetic pulse has been found and discussed. The thermo-mechanical behavior and load-carrying capacity of non-ferromagnetic conductive plates under the action of electromagnetic pulses (EMP) has been investigated.
Key words: non-ferromagnetic plates, electromagnetic pulse, thermo-mechanical behavior, load-carrying capacity, critical EMP parameters.

Кылькысть посилань 10

DETERMINATION OF INSTANTANEOUS VALUES OF POWER COMPONENTS IN AN ELECTRONIC VOLTAGE AND CURRENT TRANSFORMER

Serhiy Tankevych, Vasyl Chopyk

Institute of Electrodynamics of National Academy of Sciences of Ukraine
tankse@bk.ru, chopykied@gmail.com

Abstract: The method of determining instantaneous power components is based on the application of the p-q-r theory. The implementation of this method allows analyzing the components of instantaneous power and using the data for the purposes of various secondary systems.
Key words: electronic transformer, power, instantaneous power theory, control system.

Кылькысть посилань 4

INDUCTION SHRINK FITS for connecting Disks and shafts

Václav Kotlan, Bohuš Ulrych, Ivo Doležel
University of West Bohemia, Czech Republic
{vkotlan, ulrych, idolezel}@kte.zcu.cz

Abstract: A complete model of the induction shrink fit between a disk and shaft is presented. The model consists of a proposal of appropriate interference, checking the von Mises stress in the disk and shaft, mapping of the process of induction heating and determining the release revolutions. The methodology is illustrated by a typical example.
Key words: induction shrink fit, magnetic field, temperature field, field of thermoelastic displacements, finite element analysis.

Кылькысть посилань 4

INVESTIGATION OF THE DYNAMIC PROPERTIES OF SOLAR BATTERIES

Volodymyr Moroz, Oleh Turych
Lviv Polytechnic National University, Ukraine
vmoroz@lp.edu.ua, oleg.turych@gmail.com

Abstract: The investigation of the dynamic properties of solar batteries (SB) at the changes of loading resistance is described in this article. The results of research are illustrated by the oscillograms, which show the presence of inertia properties of SBs.
Key words: Maximum Power Point Tracking (MPPT), Solar Battery (SB), solar elements, computer model.

Кылькысть посилань 4

ESTIMATION of functional usability of radio electronic circuits by applying the method of confidence elLipsoids

Yuriy Bobalo1, Petro Stakhiv1, Svitlana Krepych2

1Lviv Polytechnic National University, Ukraine; 2Ternopil Economic National University, Ukraine
spg@lp.edu.ua, msya220189@rambler.ru

Abstract: The problem of estimation of functional usability of radio electronic circuits (REC) by applying the confidence ellipsoid method is considered in this article. The index of probability of the functional usability is chosen as that of the functional usability. A method which is based on the comparison of the domain of functional usability with the confidence domain of dispersion in the course of operation (such a method enables us to obtain an analytical relation for calculation of the probability of functional usability of REC) is suggested and substantiated. This method is implemented in the example of evaluation of functional usability of a band filter.

Key words: probability of functional usability, permissible domain, confidence ellipsoid, radio electronic circuit.

Кількість посилань 6