Piezoelectric actuators in the active vibration control system of journal bearings
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Piezoelectric actuators in the active vibration control system of journal bearings
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Journal of Physics: Conference Series. Volume 870
ISBN
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ISSN
1742-6588
e-ISSN
neuvedeno
Number of pages
6
Pages from-to
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Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Praha
Event date
Jun 9, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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