Switching Order after Failures in Symmetric Protective Electrical Circuits with Triple Modal Reservation

Belousov, Anton O.; Medvedev, Artem V.; Chernikova, Evgeniya B.; Gazizov, Talgat R.; Zabolotsky, A. M.

doi:10.3390/sym13061074

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…Modal reservation (MR) of circuits [39,40] Complex reservation of UAV circuits at the level of components, boards, and cables ensures the survivability of the UAV using modal decomposition. A number of studies have been carried out directly on the hybridization of reservation and modal filtration into a single whole.…”

Section: Methods Of Hollow and Thin Passive Conductorsmentioning

confidence: 99%

UAVs Protection and Countermeasures in a Complex Electromagnetic Environment

et al. 2022

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The study considers the problem of ensuring electromagnetic compatibility of EMI-based functional destruction means with other radioelectronic equipment as part of a complex for countering unmanned aerial vehicles. To solve this problem, it is proposed to create a methodology that combines a set of diverse approaches and methods. This study focuses on the use of hollow and thin passive conductors, the use of a magnetodielectric in a reflection symmetric modal filter, the use of reflection symmetric structures for decomposing the train of ultrashort pulses (USP), and the use of a meander line as a protective means against USPs. The main results that are expected to be obtained using the proposed approaches and methods are outlined.

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Section: Methods Of Hollow and Thin Passive Conductorsmentioning

confidence: 99%

UAVs Protection and Countermeasures in a Complex Electromagnetic Environment

et al. 2022

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“…Typical structures for implementing triple MR have been proposed: multiconductor transmission lines (MCTL). The order of switching after failures and the identification of the best configuration of parameters were investigated in [11].…”

Section: Introductionmentioning

confidence: 99%

Method for Experimental Study of Circuits with Triple Modal Reservation in Time and Frequency Domains

Kosteletskii

Medvedev

Zhechev

2022

2022 International Ural Conference on Electrical Power Engineering (UralCon)

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The paper presents a new method for experimental studies of typical prototypes with triple modal reservation. The authors propose to define the investigated devices in the frequency domain and then by using Advanced Design System software to redefine their characteristics in the time domain. The paper contains recommendations for the preparation and conduction of such experimental studies. Using these recommendations, the authors conducted measurements of the complex S-parameters of the circuits with triple modal reservation in the frequency range from 10 MHz to 18 GHz before and after failures. Then, to analyze the response to ultra-wideband interference, a pulse in the trapezoidal waveform with a duration of 150 ps was excited in Advanced Design System to the input of the reserved circuit. The maximum amplitude value at the end of the reserved circuit is obtained for all the faults studied. The authors also present the optimal order of switching the reserving circuits. This paper proposes the methods for analyzing the frequency and time characteristics. It makes possible to analyze the characteristics of circuits with multiple modal reservation and to determine the optimal switching order for reserving circuits. The proposed method requires commonly used equipment and a minimum set of technical tools that can reduce economic expenditures and time costs.

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“…Previously, the characteristics of protective circuits with a triple MR, represented as multiconductor transmission lines, were considered in [26]. The optimal switching order after failures in a multilayer structure with a triple MR was investigated in [27]. In [28], the efficiency of MR in the circuits of a spacecraft autonomous navigation system was evaluated.…”

Section: Introductionmentioning

confidence: 99%

Using N-Norms for Analyzing Symmetric Protective Electrical Circuits with Triple Modal Reservation

et al. 2021

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The redundancy of functional blocks and critical assemblies in radio-electronic equipment is among the most widely used techniques for increasing reliability. Complex redundant systems raise the problem of electromagnetic compatibility (EMC). Ignoring EMC requirements can lead to partial or complete REE failures. In this paper, the authors analyze a noise-protective electrical circuit with triple modal reservation (a promising type of cold redundancy). A multilayer stripline is investigated, the conductors of which are symmetrically arranged relative to two planes. On account of the strong electromagnetic coupling, this protective circuit can decompose dangerous ultra-wideband (UWB) interference received at the input of the primary or redundant circuits into unipolar pulses of lower amplitude. Using this approach, due to the symmetry of the conductors, equal decomposition efficiency could be achieved. However, the effect of UWB interference at the input of one of the conductors produces bipolar pulses at the output of the other conductors. In this paper, the authors evaluate the dangers of unipolar and bipolar decomposed pulses and use modal analysis to mathematically determine the polarities and amplitudes of the decomposed pulses at all output nodes for a pseudo-matched structure. By using the quasistatic approach with and without losses, the time responses to a trapezoidal pulse with a total duration of 60 ps, which simulates UWB interference, are obtained. To confirm the results of modal analysis and quasistatic simulation, an experimental study is performed. Using a stroboscopic oscilloscope DSA 8300, the authors obtained a transient response to a step excitation. Then, taking the derivative, the response to a trapezoidal pulse with a total duration of 140 ps was obtained. To analyze the criticality of the decomposed pulses, N-norms are used. In the general case, it is shown that the UWB interference is decomposed into four pulses of lower amplitude. At the same time, the value of each N-norm indicates its significant attenuation. For example, the amplitude of the UWB pulse acting on the input of the reserved conductor decreases by 10.31–8.93 times. Such results numerically demonstrate the high efficiency of the suggested approach when it comes to protecting equipment against UWB interference. It is also shown that the probability of dielectric breakdown and damage to electronic components in redundant circuits is lower than in a primary circuit. This is due to the fact that the value of N3 in the redundant circuit is 2.38 times less than in the primary circuit. However, the results demonstrate that arcing is highly probable both in primary and redundant circuits. Finally, aspects of symmetry/asymmetry in the problem under investigation are emphasized.

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Switching Order after Failures in Symmetric Protective Electrical Circuits with Triple Modal Reservation

Cited by 10 publications

References 22 publications

UAVs Protection and Countermeasures in a Complex Electromagnetic Environment

UAVs Protection and Countermeasures in a Complex Electromagnetic Environment

Method for Experimental Study of Circuits with Triple Modal Reservation in Time and Frequency Domains

Using N-Norms for Analyzing Symmetric Protective Electrical Circuits with Triple Modal Reservation

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