Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, all...
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The Japan Society of Mechanical Engineers
2019
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oai:doaj.org-article:ea96bfa5305f4730ab731ad835f34e632021-11-29T05:43:34ZDesign of active magnetic bearing rotors and their control method for passing through fourth bending critical speed2187-974510.1299/mej.18-00481https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e632019-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/3/6_18-00481/_pdf/-char/enhttps://doaj.org/toc/2187-9745These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, allowing downsizing and cost reduction of trains. In this study, experimental equipment of a flexible rotor supported by active magnetic bearings was developed to carry out experiments as a step toward developing the technology. The following results were obtained, (1) Mass distribution in designing flexible rotors allows adjustment of the critical speed by design. (2) With the modal balancing method under higher critical speed, the sixth critical speed was passed through, the world's first achievement of this.Hiroyuki FUJIWARAKazutoshi YANAGIHARAOsami MATSUSHITAOsamu TOKUDAThe Japan Society of Mechanical Engineersarticleactive magnetic bearingflexible rotorbending modecritical speedcontroller designMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00481-18-00481 (2019) |
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active magnetic bearing flexible rotor bending mode critical speed controller design Mechanical engineering and machinery TJ1-1570 |
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active magnetic bearing flexible rotor bending mode critical speed controller design Mechanical engineering and machinery TJ1-1570 Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
description |
These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, allowing downsizing and cost reduction of trains. In this study, experimental equipment of a flexible rotor supported by active magnetic bearings was developed to carry out experiments as a step toward developing the technology. The following results were obtained, (1) Mass distribution in designing flexible rotors allows adjustment of the critical speed by design. (2) With the modal balancing method under higher critical speed, the sixth critical speed was passed through, the world's first achievement of this. |
format |
article |
author |
Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA |
author_facet |
Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA |
author_sort |
Hiroyuki FUJIWARA |
title |
Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
title_short |
Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
title_full |
Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
title_fullStr |
Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
title_full_unstemmed |
Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
title_sort |
design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed |
publisher |
The Japan Society of Mechanical Engineers |
publishDate |
2019 |
url |
https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e63 |
work_keys_str_mv |
AT hiroyukifujiwara designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT kazutoshiyanagihara designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT osamimatsushita designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT osamutokuda designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed |
_version_ |
1718407619521019904 |