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Statements

Subject Item
n2:RIV%2F61989100%3A27230%2F13%3A86085879%21RIV14-GA0-27230___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
Rotor instability is one of the most serious problems of high-speed rotors supported by sliding bearings. Even though there are many solutions based on passive improvement of the bearing geometry to enlarge the operational speed range of the journal bearing, the paper deals with a working prototype of a system for the active vibration control of journal bearings with the use of piezoactuators. The actively controlled journal bearing consists of a movable bushing, which is actuated by two piezoactuators. The journal vibration is measured by a pair of proximity probes. The control system enables run-up, coast-down and steady-state rotation. A real-time simulator dSpace encloses the control loop. Force produced by piezoactuators and acting at the bushing is controlled according to error signals derived from the proximity probe output signals. As it was proved by experiments the active vibration control extends considerably the range of the operational speed. Rotor instability is one of the most serious problems of high-speed rotors supported by sliding bearings. Even though there are many solutions based on passive improvement of the bearing geometry to enlarge the operational speed range of the journal bearing, the paper deals with a working prototype of a system for the active vibration control of journal bearings with the use of piezoactuators. The actively controlled journal bearing consists of a movable bushing, which is actuated by two piezoactuators. The journal vibration is measured by a pair of proximity probes. The control system enables run-up, coast-down and steady-state rotation. A real-time simulator dSpace encloses the control loop. Force produced by piezoactuators and acting at the bushing is controlled according to error signals derived from the proximity probe output signals. As it was proved by experiments the active vibration control extends considerably the range of the operational speed.
dcterms:title
Active vibrations control of journal bearings with the use of piezoactuators Active vibrations control of journal bearings with the use of piezoactuators
skos:prefLabel
Active vibrations control of journal bearings with the use of piezoactuators Active vibrations control of journal bearings with the use of piezoactuators
skos:notation
RIV/61989100:27230/13:86085879!RIV14-GA0-27230___
n13:predkladatel
n17:orjk%3A27230
n3:aktivita
n20:P
n3:aktivity
P(GAP101/12/2520)
n3:cisloPeriodika
2
n3:dodaniDat
n15:2014
n3:domaciTvurceVysledku
n10:4597265 n10:4769287 n10:9581480
n3:druhVysledku
n4:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
59406
n3:idVysledku
RIV/61989100:27230/13:86085879
n3:jazykVysledku
n9:eng
n3:klicovaSlova
fluid-induced vibration; rotor instability; piezoactuators; hydrodynamic bearings; journal bearings; Active vibration control
n3:klicoveSlovo
n5:Active%20vibration%20control n5:fluid-induced%20vibration n5:piezoactuators n5:hydrodynamic%20bearings n5:rotor%20instability n5:journal%20bearings
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[F4C1D94650A4]
n3:nazevZdroje
Mechanical Systems and Signal Processing
n3:obor
n14:JB
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n6:GAP101%2F12%2F2520
n3:rokUplatneniVysledku
n15:2013
n3:svazekPeriodika
36
n3:tvurceVysledku
Los, Jaroslav Šimek, Jiří Tůma, Jiří Škuta, Jaromír
n3:wos
000319302100023
s:issn
0888-3270
s:numberOfPages
12
n12:doi
10.1016/j.ymssp.2012.11.010
n11:organizacniJednotka
27230