Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Komorski, Pawel" wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Diagnostics of the drive shaft bearing based on vibrations in the high-frequency range as a part of the vehicles self-diagnostic system
Autorzy:
Nowakowski, Tomasz
Komorski, Pawel
Powiązania:
https://bibliotekanauki.pl/articles/2057986.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
self-diagnostic system
vibration
vehicles
signal processing methods
decision trees
Opis:
Currently, one of the trends in the automotive industry is to make vehicles as autonomous as possible. In particular, this concerns the implementation of complex and innovative selfdiagnostic systems for cars. This paper proposes a new diagnostic algorithm that evaluates the performance of the drive shaft bearings of a road vehicle during use. The diagnostic parameter was selected based on vibration measurements and machine learning analysis results. The analyses included the use of more than a dozen time domain features of vibration signal in different frequency ranges. Upper limit values and down limit values of the diagnostic parameter were determined, based on which the vehicle user will receive information about impending wear and total bearing damage. Additionally, statistical verification of the developed model and validation of the results were performed.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 1; 70--79
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A proposal for a mobile system of vehicle and rail track diagnostics
Autorzy:
Komorski, Paweł
Kominowski, Julian
Motyl, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2203880.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
vehicle
rail track
diagnostics
vibration measurements
pojazd
tor kolejowy
diagnostyka
pomiary drgań
Opis:
The proper technical condition of a vehicle and rail track in operation is a key aspect in terms of safety and travel comfort. This issue is of particular importance for operators and managers of rolling stock and rail infrastructure. Currently, many diagnostic systems have been developed to monitor the technical condition of selected vehicle systems or rail track from the viewpoints of both the vehicle and track. This article proposes the use of vibration signals in selected quantitative and qualitative analyses as the main diagnostic parameter. For this purpose, over a dozen vibration measurements were carried out during the normal operation of a freight wagon as part of a so-called passive experiment. Measurement points were located on the axle boxes of the wheelsets. The proposed research methodology served as a basis for comparative analyses of the selected operational cases that were investigated. The most important conclusion from the study is that it is possible to monitor the technical condition of vehicles and tracks in real time on the basis of measurements of vibration accelerations at the vehicle level. This directly increases the service life of rolling stock and optimises operating costs by changing the maintenance strategy to one that takes into account the idea of modern on-board technical diagnostics. Another important aspect is the possibility of the varied use of the proposed measurement system, depending on the purpose of the research, which is also associated with the diagnostician’s experience in processing vibroacoustic signals and the utilization of simple or complex quantitative and qualitative analyses.
Źródło:
Transport Problems; 2022, 17, 2; 45--56
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of the sound propagation for a railway vehicle moving on the track
Modelowanie propagacji hałasu podczas przejazdu pojazdu kolejowego na nasypie
Autorzy:
Borwin, Marta
Komorski, Paweł
Szymański, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/33334967.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
noise
propagation
acoustic measurement
passing
railway vehicle
track
hałas
propagacja
pomiar akustyczny
przejazd
pojazd kolejowy
nasyp
Opis:
The article presents the process of modeling the phenomenon of noise propagation generated during the passage of a railway vehicle as a function of distance from the sound source and of octave frequencies. The conducted experimental studies served as the basis for the development of sound propagation models. Acoustic measurements were carried out in the area of the railway line whose track was elevated on a track foundation. Then a model was developed that most faithfully reproduces the analyzed phenomenon in real conditions.
W artykule przedstawiono proces modelowania zjawiska propagacji hałasu generowanego podczas przejazdu pojazdu kolejowego w funkcji odległości od źródła dźwięku oraz częstotliwości oktawowych. Podstawą do opracowania modeli propagacji dźwięku były zrealizowane badania eksperymentalne. Pomiary akustyczne przeprowadzono w obszarze linii kolejowej, którego tor był zlokalizowany na nasypie. Następnie opracowano model, który najwierniej odwzorowuje analizowane zjawisko w warunkach rzeczywistych.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2019, 3; 60-68
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative application of quality methods in the homogeneity assessment of the F-16 aircraft group in terms of generated noise
Autorzy:
Misztal, Agnieszka
Szymanski, Grzegorz M.
Misztal, Wojciech
Komorski, Pawel
Powiązania:
https://bibliotekanauki.pl/articles/2087027.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
noise measurements
F-16 aircraft
homogeneity assessment
quality control methods
Opis:
Given the high-power concentration of combustion engines used in military aviation, it is reasonable to measure the instantaneous surges in the sound pressure level. Therefore, a research question was raised regarding the differences in this level for various aircraft engines of the same type (F100-PW-229) to assess their size and statistical significance. The aim of the paper is to discuss the attempt to check the significant difference between the parameters of the acoustic level generated by the aircraft engines. The measurements were carried out for 32 engines of the F-16 Block 52+ multirole aircraft during takeoff process. The parameters of noise in the point system and in the octave distribution were subject to analysis. Statistical methods dedicated to assessing production stability, i.e. the Shewhart chart, were applied. The results of the analysis showed that the discrepancies generally do not exceed a value of +/− 3σ . Therefore, it can be concluded that the analogous results for F-16 noise are homogeneous. Thus, the Shewhart chart method proved useful for assessing the homogeneity of these measurements.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 2; 187--199
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies