About: Active vibrafon control of journal bearings with the use of piezoactuators

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 (en)
Title	Active vibrafon control of journal bearings with the use of piezoactuators Active vibrafon control of journal bearings with the use of piezoactuators (en)
skos:prefLabel	Active vibrafon control of journal bearings with the use of piezoactuators Active vibrafon control of journal bearings with the use of piezoactuators (en)
skos:notation	RIV/61989100:27230/12:86084395!RIV14-GA0-27230___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP101/12/2520)
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Šimek, Jiří Los, Jaroslav Tůma, Jiří Škuta, Jaromír
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta strojní
http://linked.open...dnocenehoVysledku	120976
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/12:86084395
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	aktive vibrafon kontrol, journal bearings, piezoactuators (en)
http://linked.open.../riv/klicoveSlovo	aktive vibrafon kontrol journal bearings piezoactuators
http://linked.open...ontrolniKodProRIV	[59DD50BF005A]
http://linked.open...v/mistoKonaniAkce	Vilnius
http://linked.open...i/riv/mistoVydani	Vilnius
http://linked.open...i/riv/nazevZdroje	The 19th International Congress on Sound and Vibration : book of abstracts : Vilnius, Lithuania, July 08-12, 2012
http://linked.open...in/vavai/riv/obor	BC
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Active vibration damping of rotor with the use of parametric excitation of journal bearings
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Los, Jaroslav Tůma, Jiří Šimek, Jiří Škuta, Jaromír
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-06-08 (xsd:date)
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	International Institute of Acoustics and Vibration
https://schema.org/isbn	978-609-459-080-1
http://localhost/t...ganizacniJednotka	27230

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