Szczegóły publikacji
Opis bibliograficzny
Time-variant system analysis using wavelet-based transmissibility / Kajetan DZIEDZIECH, Wiesław J. STASZEWSKI, T. UHL // W: Advances in mechanism and machine science : proceedings of the 15th IFToMM World Congress on Mechanism and Machine science : [June 30–July 4, 2019, Krakow, Poland] / ed. Tadeusz Uhl. — Cham : Springer Nature Switzerland, cop. 2019. — (Mechanisms and Machine Science ; ISSN 2211-0984 ; Vol. 73). — ISBN: 978-3-030-20130-2; e-ISBN: 978-3-030-20131-9. — S. 4167–4173. — Bibliogr., Abstr. — Publikacja dostępna online od: 2019-06-14
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 123536 |
|---|---|
| Data dodania do BaDAP | 2019-11-05 |
| DOI | 10.1007/978-3-030-20131-9_415 |
| Rok publikacji | 2019 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Wydawca | Springer |
| Czasopismo/seria | Mechanisms and Machine Science |
Abstract
Operational modal analysis is widely used in many engineering applications for system identification when excitations measurements are not known or assumed to be broadband and random. The concept of transmissibility, based on the ratio of measured responses, is well known in this approach. This concept is extended for the analysis of time-variant systems. The wavelet-based transmissibility function, that exhibits the combined time-frequency behaviour, is presented. The major focus is on identification and detection of changes to varying physical parameters. Experimental validation is performed using vibration responses captured from a frame-like structure with a tank. This system exhibits varying mass behaviour due to draining sand from the tank. The direct wavelet-based transmissibility function and the relevant coherence function are used for the analysis of this time-variant system. The results demonstrate that the method can be used effectively to capture the time variant behaviour of the system.
