Vibration diagnosing method and apparatus for a rotary machine
US4435770A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1981 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Mar 19, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for diagnosing a vibration in a rotor of the rotary machine including detecting the number of rotations and the vibration in the rotor when the rotor is rotating, extracting a vibration component synchronized with the number of rotations, determining whether the vibration component is normal or abnormal, calculating an abnormal vibration component through a vector operation by using the detected vibration component and a previously determined rotor vibration component in a normal state of the rotor, when the detected vibration component is judged to be abnormal, normalizing a vibration pattern of the abnormal vibration component, and determining an unbalance originating position in the rotor, which generates the abnormal vibration, by using a comparison of the normalized abnormal vibration pattern with a normalized vibration pattern of a previously determined unbalanced vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.