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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2019-05-01
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| Series: | Mechanical Engineering Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/mej/6/3/6_18-00481/_pdf/-char/en |
| _version_ | 1819195400542748672 |
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| author | Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA |
| author_facet | Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA |
| author_sort | Hiroyuki FUJIWARA |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-23T02:12:10Z |
| format | Article |
| id | doaj.art-ea96bfa5305f4730ab731ad835f34e63 |
| institution | Directory Open Access Journal |
| issn | 2187-9745 |
| language | English |
| last_indexed | 2024-12-23T02:12:10Z |
| publishDate | 2019-05-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj.art-ea96bfa5305f4730ab731ad835f34e632022-12-21T18:03:46ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452019-05-016318-0048118-0048110.1299/mej.18-00481mejDesign of active magnetic bearing rotors and their control method for passing through fourth bending critical speedHiroyuki FUJIWARA0Kazutoshi YANAGIHARA1Osami MATSUSHITA2Osamu TOKUDA3Department of Mechanical Engineering, National Defense AcademyIndustrial Products Business Unit, Hitachi Ltd,.Department of Mechanical Engineering, National Defense AcademyGraduate School of Science and Engineering, National Defense AcademyThese 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.https://www.jstage.jst.go.jp/article/mej/6/3/6_18-00481/_pdf/-char/enactive magnetic bearingflexible rotorbending modecritical speedcontroller design |
| spellingShingle | 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 Mechanical Engineering Journal active magnetic bearing flexible rotor bending mode critical speed controller design |
| title | 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_short | 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 |
| topic | active magnetic bearing flexible rotor bending mode critical speed controller design |
| url | https://www.jstage.jst.go.jp/article/mej/6/3/6_18-00481/_pdf/-char/en |
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