Rotating machinery diagnosis system with acoustic emission technique
US4669315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jul 14, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2693
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a rotating machinery diagnosis system with an AE technique, which comprises: an AE sensor mounted on a rotary machine for sensing an acoustic signal of the rotary machine; envelope detector means for obtaining an envelope signal from the acoustic signal from the AE sensor; waveform-feature processor means for performing signal processing so as to detect a feature of waveform of an output waveform signal from the envelope detector means; feature decision means for judging whether the feature of waveform belongs to a continuous type or a burst type and/or to a rotation-synchronous type or a rotation-asynchronous type on the basis of an output signal from the waveform-feature processor means; and diagnostic output means for outputting and displaying an output signal from the feature decision means, whereby it is possible to perform judgement simultaneously as to a plurality of kinds of abnormality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.