Vestnik of Ryazan State
Radio Engineering University

UDC 615.472.03.615.847.8

ANALYSIS OF TRANSIENT PROCESSES CONSIDERING LOSSES IN GAS-DISCHARGE CURRENT SWITCH WITH SECTORAL SCREEN HOLE

S. A. Kruglov, Dr. Sc. (Tech.), full professor, Department of industrial electronics, Head of the Department, RSREU, Ryazan, Russia; orcid.org/0000-0001-5992-7319, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A. A. Serezhin, Ph.D. (Tech.), associate professor, Department of industrial electronics, RSREU, Ryazan, Russia;

orcid.org/0000-0001-8134-8970, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

D. S. Kusakin, Ph.D. (Phys. and Math.), associate professor, Department of electronic devices, RSREU, Ryazan, Russia;

orcid.org/0000-0002-1596-2136, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

K. D. Agaltsov, senior lecturer, Department of industrial electronics, RSREU, Ryazan, Russia;

orcid.org/0000-0001-6475-9364, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The work is devoted to the study of energy losses during the flow of current at the stage of conduction and switching, in a gas-discharge current switch with a shielding electrode having a sector hole, and to evaluate the efficiency of the device in the circuit of a high-voltage pulse generator with inductive energy storage. The aim of the work is to study energy characteristics of operating mode of a gas-discharge current switch with a sectoral screen hole in a circuit with inductive energy storage.

Key words: gas-discharge current interrupters, low-pressure plasma, effect of current self-break, inductive energy storage, critical charge, energy losses of a gas-discharge switch.

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UDC 621.3.019.3

RELIABILITY OF RESTORABLE SYSTEM WITH LOAD-MIXED RESERVE

N. A. Smolyarov, Ph.D. (Tech.), associate professor, RSREU, Ryazan, Russia;

orcid.org/0000-0003-1799-7639, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Finding problem of mean operating time between failures of restorable system with load-mixed reserve, common and individual switches is considered. The aim of the article is to obtain correlations allowing to estimate mean operating time between failures of this system with redundancy ratio m = 2 taking into account switches unreliability. Markovian model of system reliability is used. As a result of problem solution the expressions for calculating mean operating time between failures, estimation of reliability gain to it from considering system application as compared with restorable system with loaded reserve are obtained. These expressions may be used with any type of reserve on a load and with the execution of the assumptions received.

Key words: reliability, redundant restorable system, load-mixed reserve, common and individual switches, mean operating time between failures, reliability gain to mean operating time between failures.

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UDC 621.384.8:543.51

ANALYTICAL REPRESENTATION OF ION CAPTURE COEFFICIENT IN QUADRUPOLE ION TRAP

A. E. Malyutin, Ph.D. (Phys. and Math.), associate professor, Department of general and experimental physics, RSREU, Ryazan, Russia; orcid.org/0000-0002-1704-0792, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

V. V. Ivanov, Ph.D. (Tech.), associate professor, Department of general and experimental physics, RSREU, Ryazan, Russia;

orcid.org/0000-0002-5655-0111, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Yu. V. Cherkasova, Ph.D. (Tech.), associate professor, Department of general and experimental physics, RSREU, Ryazan, Russia; orcid.org/0000-0003-2474-3629, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The aim of the work is to research the possibility of applying an analytical approach to solve the problem of the effectiveness of quadrupole mass spectrometers. The theoretical derivation of expressions describing ion capture coefficient in a quadrupole ion trap, taking into account the distribution of their initial parameters in phase space, is made. Several possible distributions of initial parameters are considered: point ionization region, axial ionization, ionization by a ribbon beam and the input of ions from the outside. It is shown that in all cases it is possible to obtain analytical expressions for ion capture coefficient or sufficiently accurate analytical approximations.

Key words:  mass spectrometry, quadrupole ion trap, ion capture coefficient, phase space, capture ellipses.

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UDC 623.4.023.41

LINEAR OPERATOR TO DETECT OBJECT EDGES WITH A PRIORI SPECIFIED ANGULAR ORIENTATION IN A DIGITAL IMAGE

I. S. Kholopov, Ph.D. (Tech.), associate professor, Department of Radio Engineering Systems, RSREU, Ryazan, Russia;

orcid.org/0000-0001-5220-0811, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

T. S. Kislitsyna, assistant, Department of Radio Engineering Systems, RSREU, Ryazan, Russia;

orcid.org/0000-0003-0374-8316, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

E. S. Shtrunova, Ph.D. (Tech.), associate professor, Department of Radio Engineering Systems, RSREU, Ryazan, Russia;

orcid.org/0000-0003-1878-8011, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The aim of the work is to develop a linear two-dimensional operator that implements the calculation of a brightness gradient in a digital image in a priori given angular direction. The geometric statement of the problem and the algorithm for calculating the weight coefficients of linear filter mask are given. It is shown that the developed linear operator makes it possible to successfully detect edges with user-defined angular orientation when signal-to-noise ratio is more than 10. An example of using a linear operator in an applied task of measuring the distance to objects on a railway using information from a single camera frame is given.

Key words: brightness gradient, edge detector, Prewitt operator, Nevatia – Babu operator.

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