An actively controlled journal bearing with increased resistance to instability
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F19%3A10242399" target="_blank" >RIV/61989100:27230/19:10242399 - isvavai.cz</a>
Result on the web
<a href="https://www.mmscience.eu/journal/issues/march-2019/articles/an-actively-controlled-journal-bearing-with-increased-resistance-to-instability" target="_blank" >https://www.mmscience.eu/journal/issues/march-2019/articles/an-actively-controlled-journal-bearing-with-increased-resistance-to-instability</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17973/MMSJ.2019_03_201897" target="_blank" >10.17973/MMSJ.2019_03_201897</a>
Alternative languages
Result language
angličtina
Original language name
An actively controlled journal bearing with increased resistance to instability
Original language description
Journal hydrodynamic bearings are used for their high radial load capacity and operation at high speeds. The only disadvantage is the excitation of vibrations, called an oil whirl, after crossing a threshold of the rotational speed. The whirl can be suppressed using the controlled motion of the non-rotating loose bushing which is actuated by piezo-actuators. The displacement of the piezo-actuators is governed by a feedback which reduces the difference between the required and true position of the bearing journal. This new bearing design enables not only to increase the threshold of instability but also serves to maintain the desired bearing journal position with the accuracy of micrometers. The article deals with the design of an actively controlled bearing with special regard to the installation of piezoelectrometers. Part of the article is also a description of the influence of active vibration control on bearing performance characteristics and bearing friction losses. (C) 2019, MM publishing Ltd. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/EF16_019%2F0000867" target="_blank" >EF16_019/0000867: Research Centre of Advanced Mechatronic Systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MM Science Journal
ISSN
1803-1269
e-ISSN
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Volume of the periodical
2019
Issue of the periodical within the volume
March
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
6
Pages from-to
2849-2854
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85065048944