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  • At present, detailed rubbing diagnostics is implemented as off-line analysis of measured data. During the machine operation, the overall level of vibration and the rotational frequency (1X) phasor are traced. On the basis of amplitude and phase changes, the presence of rub is identified. Although unmonitored, changes in sub synchronous spectral components are also caused by rubbing. The new method presented herein utilizes measurements of these changes for better online rubbing detection. The paper presents the authors work on rotor/stator rub detection in steam turbines. For automatic rubbing detection, an on-line tool, called cumulative fullspectra method and based on full-spectra computation, is proposed. The proposed automatic detection algorithm is based on characteristic value, which is computed using special norming of tracked frequencies in the cumulative full-spectra.
  • At present, detailed rubbing diagnostics is implemented as off-line analysis of measured data. During the machine operation, the overall level of vibration and the rotational frequency (1X) phasor are traced. On the basis of amplitude and phase changes, the presence of rub is identified. Although unmonitored, changes in sub synchronous spectral components are also caused by rubbing. The new method presented herein utilizes measurements of these changes for better online rubbing detection. The paper presents the authors work on rotor/stator rub detection in steam turbines. For automatic rubbing detection, an on-line tool, called cumulative fullspectra method and based on full-spectra computation, is proposed. The proposed automatic detection algorithm is based on characteristic value, which is computed using special norming of tracked frequencies in the cumulative full-spectra. (en)
Title
  • The use of time-frequency methods in rotor/stator impact-rubbing detection
  • The use of time-frequency methods in rotor/stator impact-rubbing detection (en)
skos:prefLabel
  • The use of time-frequency methods in rotor/stator impact-rubbing detection
  • The use of time-frequency methods in rotor/stator impact-rubbing detection (en)
skos:notation
  • RIV/49777513:23520/11:43898066!RIV13-MSM-23520___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(FR-TI1/196), S
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 237281
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23520/11:43898066
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • partial rub, cumulative full-spectra, characteristic value (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [3F356FD382AD]
http://linked.open...v/mistoKonaniAkce
  • Washington DC, USA
http://linked.open...i/riv/mistoVydani
  • Washington
http://linked.open...i/riv/nazevZdroje
  • Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2011
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Liška, Jindřich
  • Černý, Václav
  • Jakl, Jan
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://bibframe.org/vocab/doi
  • 10.1115/DETC2011-48211
http://purl.org/ne...btex#hasPublisher
  • ASME
https://schema.org/isbn
  • 978-0-7918-5478-5
http://localhost/t...ganizacniJednotka
  • 23520
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