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Statements

Subject Item
n2:RIV%2F61989100%3A27230%2F12%3A86084395%21RIV14-GA0-27230___
rdf:type
n18:Vysledek skos:Concept
dcterms:description
Rotor instability is one of the most serious problems of high-speed rotors supported by sliding or journal bearings. With constantly increasing parameters of new machines problems with rotor instability are encountered more and more often. Even though there are many solution 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 controllable journal bearing is a part of a test stand, which consists of a rotor driven by an inductive motor up to 23 000 rpm. 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. 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 or journal bearings. With constantly increasing parameters of new machines problems with rotor instability are encountered more and more often. Even though there are many solution 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 controllable journal bearing is a part of a test stand, which consists of a rotor driven by an inductive motor up to 23 000 rpm. 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. 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 vibrafon control of journal bearings with the use of piezoactuators Active vibrafon control of journal bearings with the use of piezoactuators
skos:prefLabel
Active vibrafon control of journal bearings with the use of piezoactuators Active vibrafon control of journal bearings with the use of piezoactuators
skos:notation
RIV/61989100:27230/12:86084395!RIV14-GA0-27230___
n18:predkladatel
n19:orjk%3A27230
n3:aktivita
n12:P
n3:aktivity
P(GAP101/12/2520)
n3:dodaniDat
n4:2014
n3:domaciTvurceVysledku
n7:9581480 n7:4597265 n7:4769287 n7:1888366
n3:druhVysledku
n21:D
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
120976
n3:idVysledku
RIV/61989100:27230/12:86084395
n3:jazykVysledku
n22:eng
n3:klicovaSlova
aktive vibrafon kontrol, journal bearings, piezoactuators
n3:klicoveSlovo
n6:journal%20bearings n6:aktive%20vibrafon%20kontrol n6:piezoactuators
n3:kontrolniKodProRIV
[59DD50BF005A]
n3:mistoKonaniAkce
Vilnius
n3:mistoVydani
Vilnius
n3:nazevZdroje
The 19th International Congress on Sound and Vibration : book of abstracts : Vilnius, Lithuania, July 08-12, 2012
n3:obor
n13:BC
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n20:GAP101%2F12%2F2520
n3:rokUplatneniVysledku
n4:2012
n3:tvurceVysledku
Tůma, Jiří Škuta, Jaromír Los, Jaroslav Šimek, Jiří
n3:typAkce
n9:WRD
n3:zahajeniAkce
2012-06-08+02:00
s:numberOfPages
8
n8:hasPublisher
International Institute of Acoustics and Vibration
n15:isbn
978-609-459-080-1
n11:organizacniJednotka
27230