Název: Analysis of thermal plasma radiation by Fourier transform, wavelet analysis and phase portraits
Autoři: Gruber, Jan ; Šonský, Jiří ; Hlína, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: Symposium on Electric Machines, Drives and Power Electronics, Prague (CZ), 2014-09-09 / 2014-09-11
Rok: 2014
Jazyk: eng
Abstrakt: Combination of various methods for signal analysis, including Fourier transform, wavelet analysis and time-embeddings provide alternate views on thermal plasma dynamics. We have recorded and analyzed radiation of cutting plasma torch during the whole cathode life-cycle (from the new unworn cathode to the cathode failure). Changes in dynamics during cathode lifecycle lead to regular oscillations expressed in signal spectra, in sudden discontinuities caused by released molten particles detected by wavelet analysis and overall dynamics change expressed in reconstructed phase portraits by time-embeddings. We present all these various views on changing dynamics to illustrate complexity of this dynamics.
Klíčová slova: atmospheric-pressure plasmas; Fourier transform; plasma cutting
Zdrojový dokument: Proceedings of the Symposium on Electric Machines, Drives and Power Electronics, ISBN 978-80-87012-52-9

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0240755

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-178161


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference