Fault detection based on instantaneous angular speed measurement and variational mode decomposition (CROSBI ID 672351)
Prilog sa skupa u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Braut, Sanjin ; Žigulić, Roberto ; Skoblar, Ante ; Štimac Rončević, Goranka
engleski
Fault detection based on instantaneous angular speed measurement and variational mode decomposition
Rotating machinery encounter throughout their lifetime various problems. Among them, a rotor- stator rubbing problem is one of the most common. This paper proposes a procedure, which applies the instantaneous angular speed (IAS) measurement as a starting step for rotor-stator partial rub detection. There are various approaches regarding counting techniques and processing of signal. In this paper, an application of analog signals from toothed wheel encoder or zebra tape encoder is considered at low to moderate sampling rates. As the rubbing process is nonlinear, this paper is proposing a variational mode decomposition (VMD) as the second step of the detection procedure. The VMD is relatively new method with promising results especially interesting for machinery fault detection. Detection tool is tested on laboratory test rig at two different rotor operating conditions i.e. without rotor-stator rubbing and with light partial rotor-stator rub. Measurements were performed with non-contact eddy current displacement sensors pointed to toothed wheel encoder. Results are presented in the shape of rotor orbits, IAS signals, FFT spectra of IAS signals and VMD spectrograms. Developed fault detection procedure based on IAS measurement and VMD decomposition was successfully tested on laboratory test rig for no rubbing and light rotor to stator partial rub condition.
Fault detection, rotor-stator partial rub, instantaneous angular speed, variational mode decomposition
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Podaci o prilogu
1-6.
2018.
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objavljeno
10.1051/matecconf/201821118006
Podaci o matičnoj publikaciji
MATEC Web of Conferences
Maia, Nuno ; Dimitrovová, Zuzana
Lisabon: EDP Sciences
2274-7214
2261-236X
Podaci o skupu
The 14th International Conference on Vibration Engineering and Technology of Machinery (VETOMAC XIV)
predavanje
10.09.2018-13.09.2018
Lisabon, Portugal
Povezanost rada
Trošak objave rada u otvorenom pristupu
Strojarstvo, Temeljne tehničke znanosti