An actively controlled journal bearing with increased resistance to instability

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

An actively controlled journal bearing with increased resistance to instability

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

An actively controlled journal bearing with increased resistance to instability

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EF16_019%2F0000867" target="_blank" >EF16_019/0000867: Centrum výzkumu pokročilých mechatronických systémů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

MM Science Journal

ISSN

1803-1269

e-ISSN

—

Svazek periodika

2019

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

2849-2854

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85065048944