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Statements

Subject Item
n2:RIV%2F61989100%3A27230%2F10%3A86076229%21RIV11-MSM-27230___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
In certain operating conditions, the oil-film forces, by which the hydrodynamic bearings act on the rotor, destabilize and induce a self-excited vibration. In this paper several concepts based on controlled kinematic excitation of the bearing shells is investigated by computer simulation and by experimental test. The mathematical model of the uncontrolled and controlled rotor system contains the nonlinear hydrodynamic forces determined by the solution of the Reynolds equation assuming short case of bearing. The computer simulations were performed for rotor system without feedback control and with feedback controller. Results of the computer simulations proved that the analyzed approaches reduce amplitude of the rotor vibration caused by the imbalance forces. Experimental test and computer simulations demonstrate that the active vibration control increases considerably the rotation speed when the self-excited vibration of the oil-film occurred. In certain operating conditions, the oil-film forces, by which the hydrodynamic bearings act on the rotor, destabilize and induce a self-excited vibration. In this paper several concepts based on controlled kinematic excitation of the bearing shells is investigated by computer simulation and by experimental test. The mathematical model of the uncontrolled and controlled rotor system contains the nonlinear hydrodynamic forces determined by the solution of the Reynolds equation assuming short case of bearing. The computer simulations were performed for rotor system without feedback control and with feedback controller. Results of the computer simulations proved that the analyzed approaches reduce amplitude of the rotor vibration caused by the imbalance forces. Experimental test and computer simulations demonstrate that the active vibration control increases considerably the rotation speed when the self-excited vibration of the oil-film occurred.
dcterms:title
Numerical simulation of feedback controlled fluid-induced instabilities in rotor system supported by hydrodynamic bearings Numerical simulation of feedback controlled fluid-induced instabilities in rotor system supported by hydrodynamic bearings
skos:prefLabel
Numerical simulation of feedback controlled fluid-induced instabilities in rotor system supported by hydrodynamic bearings Numerical simulation of feedback controlled fluid-induced instabilities in rotor system supported by hydrodynamic bearings
skos:notation
RIV/61989100:27230/10:86076229!RIV11-MSM-27230___
n5:aktivita
n13:Z
n5:aktivity
Z(MSM6198910027)
n5:cisloPeriodika
3
n5:dodaniDat
n16:2011
n5:domaciTvurceVysledku
n14:3580512 n14:5047854
n5:druhVysledku
n17:J
n5:duvernostUdaju
n10:S
n5:entitaPredkladatele
n8:predkladatel
n5:idSjednocenehoVysledku
275638
n5:idVysledku
RIV/61989100:27230/10:86076229
n5:jazykVysledku
n7:eng
n5:klicovaSlova
kinematic excitation; hydrodynamic bearing instability; rotor system
n5:klicoveSlovo
n9:kinematic%20excitation n9:rotor%20system n9:hydrodynamic%20bearing%20instability
n5:kodStatuVydavatele
PL - Polská republika
n5:kontrolniKodProRIV
[23E6C8A096BC]
n5:nazevZdroje
Archives of Control Sciences
n5:obor
n6:JR
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
3
n5:rokUplatneniVysledku
n16:2010
n5:svazekPeriodika
20
n5:tvurceVysledku
Sikora, Roman Poruba, Zdeněk Ferfecki, Petr
n5:zamer
n12:MSM6198910027
s:issn
1230-2384
s:numberOfPages
15
n18:organizacniJednotka
27230