Vibration Criteria Considered from Case Studies of Active Magnetic Bearing Equipped Rotating Machines
The main part of turbo machinery is conventionally supported by oil film lubricated bearings. The rotor vibrations can be suppressed within low levels as to satisfy vibration criteria, e.g., ISO standards for general rotors and API 617 for process compressors. Recently, the sophisticated advantages...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2000-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1023621X00000075 |
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| Summary: | The main part of turbo machinery is conventionally supported by oil film lubricated bearings.
The rotor vibrations can be suppressed within low levels as to satisfy vibration criteria, e.g.,
ISO standards for general rotors and API 617 for process compressors. Recently, the
sophisticated advantages of the active magnetic bearing (AMB) have been increasing the
number of applications to industrial rotors. The AMB vibration control design requires
the weak support which induces inevitably large vibration amplitude, though it is normal for
AMB itself. Vibration criteria indicated by present standards are thus too strict for AMB
equipped rotors. The difference of the bearing dynamic characteristics between the oil film
lubricated bearing and the AMB compels us to prepare a new ISO standard which
recommends the acceptance of higher vibration levels for AMB operation. |
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| ISSN: | 1023-621X |