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Wyszukujesz frazę "signal analysis" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Intelligent system of noise control of the technical condition of railroad tracks
Autorzy:
Aliev, Telman
Babayev, Tofig
Alizada, Tahir
Alibayli, Elnur
Ahmedov, Heybatulla
Powiązania:
https://bibliotekanauki.pl/articles/2203848.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railroad track
geometry car
flaw detector car
vibration
identification
useful signal
noisy signal
equivalent signal
correlation analysis
spectral analysis
noise monitoring
intelligent system
tory kolejowe
drgania
identyfikacja
użyteczny sygnał
głośny sygnał
równoważny sygnał
analiza korelacyjna
analiza spektralna
monitorowanie hałasu
system inteligentny
Opis:
It is shown that modern geometry cars, flaw detector cars and other track test cars provide reliable control of the technical condition of all hauls of the railroad track at “certain intervals of time”. Their number is limited and therefore “continuous monitoring” of all hauls is almost impossible. At the same time, in real life, due to the impact of various factors, such as seismic processes, certain changes take place even a day after control. The authors consider one option for continuous monitoring of the beginning of changes in the technical condition of the track using intelligent tools, which allow one, by analyzing the useful signal and the noise from the soil vibrations caused by the rolling stock, to create informative attributes for identifying the technical condition of the track. The application of traditional technologies of correlation and spectral analysis and other methods for this purpose does not allow ensuring adequacy of the control results. This paper proposes a technology for extracting and analyzing useful vibration signals, the noise of vibration signals and the relationship between them. The estimates of both correlation and spectral characteristics of the useful signal and the noise are used as the main carriers of diagnostic information. Due to the simplicity and the reliability of implementation of the proposed technical tools, they can be easily installed in one of the cars of all rolling stocks, providing control of the beginning of changes in the technical condition of the track during their movement in all hauls
Źródło:
Transport Problems; 2021, 16, 1; 65--73
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control of the beginning of accidents in railroad operation safety systems in seismically active regions using the noise technology
Autorzy:
Aliev, Telman
Babayev, Tofig
Alizada, Tahir
Rzayeva, Narmin
Powiązania:
https://bibliotekanauki.pl/articles/374501.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
signal
noise analysis
control
accident
correlation matrix
signaling
railway
seismically active regions
sygnał
analiza hałasu
kontrola
wypadek
macierz korelacyjna
sygnalizacja
kolej
rejony aktywne sejsmicznie
Opis:
On the railroads in seismically active regions, the impact of frequent weak earthquakes accelerates the initiation of defects such as wear and tear, cracks and deformation due to fatigue. An analysis of the types and stages of initiation and development of defects preceding accidents at technical facilities has shown that the registration of the beginning of the latent period of transition of objects to an emergency state based on the results of traditional technologies of analysis of measurement information in the applied control systems in the field of railway transport is delayed owing to the difficulties of noise analysis. The proposed algorithms and noise analysis technologies allow forming corresponding sets of informative attributes to control the beginning of the latent period of accidents. Their use in intelligent noise control systems will improve the safety of this mode of transportation. To this end, it is expedient to create a subsystem for noise seismic hazard warning, i.e., a subsystem for noise control of the onset of the initiation and dynamics of development of changes in the technical condition of the rolling stock, railroad tracks, bridges, tunnels, and other railroad infrastructure facilities.
Źródło:
Transport Problems; 2019, 14, 3; 155-162
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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