The use of time-frequency methods in rotor/stator impact-rubbing detection

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F11%3A43898066" target="_blank" >RIV/49777513:23520/11:43898066 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/DETC2011-48211" target="_blank" >http://dx.doi.org/10.1115/DETC2011-48211</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/DETC2011-48211" target="_blank" >10.1115/DETC2011-48211</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The use of time-frequency methods in rotor/stator impact-rubbing detection

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The use of time-frequency methods in rotor/stator impact-rubbing detection

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI1%2F196" target="_blank" >FR-TI1/196: Výzkum a vývoj prototypu diagnostického systému pro detekci a lokalizaci rubbingu na parních turbínách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2011

ISBN

978-0-7918-5478-5

ISSN

—

e-ISSN

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Počet stran výsledku

10

Strana od-do

55-64

Název nakladatele

ASME

Místo vydání

Washington

Místo konání akce

Washington DC, USA

Datum konání akce

28. 8. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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