Original title: Analysis of thermal plasma radiation by Fourier transform, wavelet analysis and phase portraits
Authors: Gruber, Jan ; Šonský, Jiří ; Hlína, Jan
Document type: Papers
Conference/Event: Symposium on Electric Machines, Drives and Power Electronics, Prague (CZ), 2014-09-09 / 2014-09-11
Year: 2014
Language: eng
Abstract: 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.
Keywords: atmospheric-pressure plasmas; Fourier transform; plasma cutting
Host item entry: Proceedings of the Symposium on Electric Machines, Drives and Power Electronics, ISBN 978-80-87012-52-9

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0240755

Permalink: http://www.nusl.cz/ntk/nusl-178161


The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers