Measurement and Assessment of Turbine Rotor Speed Instabilities in Applying the BTT Method

0489976 - ÚT 2019 RIV US eng C - Conference Paper (international conference)
Procházka, Pavel - Maturkanič, Dušan - Brabec, Marek
Measurement and Assessment of Turbine Rotor Speed Instabilities in Applying the BTT Method.
I2MTC 2018 - Proceedings. Houston: IEEE, 2018, s. 1320-1324. 2018 IEEE, CFP18IMT-ART. ISBN 978-1-5386-2222-3.
[2018 IEEE International Instrumentation and Measurement Technology Conference. Houston (US), 14.05.2018-17.05.2018]
Grant - others:AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Institutional support: RVO:61388998 ; RVO:67985807
Keywords : turbine rotor * rotating speed instability * non-contact vibration diagnostics * time-varying-coefficient model
OECD category: Electrical and electronic engineering; Statistics and probability (UIVT-O)

The paper deals with the measurement and assessment of rotor speed instabilities. Mean attention is paid to measurements on turbine rotors while using the Blade Tip-Timing Method. In this case, the rotation speed instability can lead to systematic errors and significant measurement inaccuracy. The problematic was investigated on a model test turbine wheel of in the Laboratory of the Rotational Laser Vibrometry in the Institute of Thermomechanics AS CR. For the data evaluation have been used both deterministic and statistical mathematical methods and procedures. Especially statistical methods offer new perspectives on the studied phenomena.
Permanent Link: http://hdl.handle.net/11104/0285789