Piezoelectric actuators in the active vibration control system of journal bearings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F17%3A10236193" target="_blank" >RIV/61989100:27230/17:10236193 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/870/1/012017" target="_blank" >http://dx.doi.org/10.1088/1742-6596/870/1/012017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/870/1/012017" target="_blank" >10.1088/1742-6596/870/1/012017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Piezoelectric actuators in the active vibration control system of journal bearings

Popis výsledku v původním jazyce

The advantage of journal hydrodynamic bearings is high radial load capacity and operation at high speeds. The disadvantage is the excitation of vibrations, called an oil whirl, after crossing a certain threshold of the rotational speed. The mentioned vibrations can be suppressed using the system of the active vibration control with piezoactuators which move the bearing bushing. The motion of the bearing bushing is controlled by a feedback controller, which responds to the change in position of the bearing journal which is sensed by a pair of capacitive sensors. Two stacked linear piezoactuators are used to actuate the position of the bearing journal. This new bearing enables not only to damp vibrations but also serves to maintain the desired bearing journal position with an accuracy of micrometers. The paper will focus on the effect of active vibration control on the performance characteristics of the journal bearing.

Název v anglickém jazyce

Piezoelectric actuators in the active vibration control system of journal bearings

Popis výsledku anglicky

The advantage of journal hydrodynamic bearings is high radial load capacity and operation at high speeds. The disadvantage is the excitation of vibrations, called an oil whirl, after crossing a certain threshold of the rotational speed. The mentioned vibrations can be suppressed using the system of the active vibration control with piezoactuators which move the bearing bushing. The motion of the bearing bushing is controlled by a feedback controller, which responds to the change in position of the bearing journal which is sensed by a pair of capacitive sensors. Two stacked linear piezoactuators are used to actuate the position of the bearing journal. This new bearing enables not only to damp vibrations but also serves to maintain the desired bearing journal position with an accuracy of micrometers. The paper will focus on the effect of active vibration control on the performance characteristics of the journal bearing.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Journal of Physics: Conference Series. Volume 870

ISBN

—

ISSN

1742-6588

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

Praha

Datum konání akce

9. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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