Vibration diagnosis method for rotary machine
US4448077A · kind A · utility
22Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration diagnosis method for a rotary machine is disclosed. The presence or absence of a self-excited vibration is determined by checking if a rotating speed is in a rotating speed range which allows the occurrence of the self-excited vibration, if an amplitude of a frequency component corresponding to a first order critical speed is larger than a predetermined level, and if phases at characteristic points of vibration signals change among cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.