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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

  • Czech description

Classification

  • Type

    J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database

  • CEP classification

  • 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

  • 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

  • EID of the result in the Scopus database

    2-s2.0-85065048944