- Tytuł:
- Estimation of speed dependent fault parameters in a coupled rotor-bearing system
- Autorzy:
-
Lal, M.
Satapathy, M. - Powiązania:
- https://bibliotekanauki.pl/articles/140014.pdf
- Data publikacji:
- 2018
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
speed-dependent dynamic parameters
rotor-bearing-coupling
misalignment
analytical approach
multiple faults
Lagrange's method
parametry dynamiczne zależne
wirnik-łożysko-sprzęgło
niewspółosiowość
podejście analityczne
błędy wielokrotne
metoda Lagrange'a - Opis:
- In rotating machineries, misalignment is considered as the second most major cause of failure after unbalance. In this article, model-based multiple fault identification technique is presented to estimate speed-dependent coupling misalignment and bearing dynamic parameters in addition with speed independent residual unbalances. For brevity in analysis, a simple coupled rotor bearing system is considered and analytical approach is used to develop the identification algorithm. Equations of motion ingeneralized co-ordinates are derived with the help of Lagrange’s equation and least squares fitting approach is used to estimate the speed-dependent fault parameters. Present identification algorithm requires independent sets of forced response data which are generated with the help of different sets of trial unbalances. To avoid/suppress the ill-conditioning of regression equation, independent sets of forced response data are obtained by rotating the rotor in clock-wise and counter clock-wise directions, alternatively. Robustness of algorithm is checked for different levels of measurement noise.
- Źródło:
-
Archive of Mechanical Engineering; 2018, LXV, 3; 327-347
0004-0738 - Pojawia się w:
- Archive of Mechanical Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł