About: Active vibrations 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 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. (en)
Title	Active vibrations control of journal bearings with the use of piezoactuators Active vibrations control of journal bearings with the use of piezoactuators (en)
skos:prefLabel	Active vibrations control of journal bearings with the use of piezoactuators Active vibrations control of journal bearings with the use of piezoactuators (en)
skos:notation	RIV/61989100:27230/13:86085879!RIV14-GA0-27230___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP101/12/2520)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Los, Jaroslav Tůma, Jiří Škuta, Jaromír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	59406
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/13:86085879
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fluid-induced vibration; rotor instability; piezoactuators; hydrodynamic bearings; journal bearings; Active vibration control (en)
http://linked.open.../riv/klicoveSlovo	fluid-induced vibration Active vibration control hydrodynamic bearings journal bearings piezoactuators rotor instability
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[F4C1D94650A4]
http://linked.open...i/riv/nazevZdroje	Mechanical Systems and Signal Processing
http://linked.open...in/vavai/riv/obor	JB
http://linked.open...ichTvurcuVysledku	3 (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	2013
http://linked.open...v/svazekPeriodika	36
http://linked.open...iv/tvurceVysledku	Los, Jaroslav Tůma, Jiří Šimek, Jiří Škuta, Jaromír
http://linked.open...ain/vavai/riv/wos	000319302100023
issn	0888-3270
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.ymssp.2012.11.010
http://localhost/t...ganizacniJednotka	27230

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