JPS54147882A - Abnormality occurrence detecting method of rotating machine using acoustic signals - Google Patents
Abnormality occurrence detecting method of rotating machine using acoustic signalsInfo
- Publication number
- JPS54147882A JPS54147882A JP5557578A JP5557578A JPS54147882A JP S54147882 A JPS54147882 A JP S54147882A JP 5557578 A JP5557578 A JP 5557578A JP 5557578 A JP5557578 A JP 5557578A JP S54147882 A JPS54147882 A JP S54147882A
- Authority
- JP
- Japan
- Prior art keywords
- acoustic
- histogram
- shaft
- signal
- generating position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To readily detect the position, time, frequency, etc. of the abnormality occurrence of a revolving shaft by subjecting the revolution pulses and the acoustic signals from both ends of a revolving shaft to specified processing.
CONSTITUTION: When the time difference of the acoustic signal waveforms from the acoustic sensors 9, 9' at both end of a revolving shaft is detected with a time difference measuring instrument 14 and is subjected to division by the acoustic propagation speed in the shaft 6 in a divider 15, the acoustic generating position with the center of the shaft 6 as a reference is determined. On the other hand, the circuit pulse signal which a revolution pulse detector 13 generates at each rotation of the shaft 6 and the acoustic signal of the sensor 9 are applied to a histogram processing means 16, where the histogram of the rotating angle-acoustic generating frequency waveforms synchronized to the revolution pulses is made. If this histogram is subjected to delay correction according to the generating position mean value signal from the means 17 by a time delay means 20, it becomes the histogram of the acoustic generating position. Hence, the signal superposing the AC component corresponding to the histogram on the DC component corresponding to the acoustic generating position is generated from an adder, whereby the abnormality of the rotating machaine is readily and accurately detected.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5557578A JPS54147882A (en) | 1978-05-12 | 1978-05-12 | Abnormality occurrence detecting method of rotating machine using acoustic signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5557578A JPS54147882A (en) | 1978-05-12 | 1978-05-12 | Abnormality occurrence detecting method of rotating machine using acoustic signals |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54147882A true JPS54147882A (en) | 1979-11-19 |
JPH0145011B2 JPH0145011B2 (en) | 1989-10-02 |
Family
ID=13002521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5557578A Granted JPS54147882A (en) | 1978-05-12 | 1978-05-12 | Abnormality occurrence detecting method of rotating machine using acoustic signals |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54147882A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61196160A (en) * | 1985-02-27 | 1986-08-30 | Kawasaki Steel Corp | Spalling position detector for rolling roll |
US4685335A (en) * | 1982-03-03 | 1987-08-11 | Hitachi, Ltd. | Method and apparatus for monitoring cracks of a rotatable body |
JP2018024086A (en) * | 2016-07-29 | 2018-02-15 | オークマ株式会社 | Information measuring device |
JP6456574B1 (en) * | 2018-04-04 | 2019-01-23 | 三菱電機株式会社 | Diagnostic device, sensor data collecting device, diagnostic method, diagnostic program, and diagnostic system |
EP3547514A4 (en) * | 2016-11-25 | 2020-07-22 | Hitachi, Ltd. | Power conversion device |
WO2023176422A1 (en) * | 2022-03-17 | 2023-09-21 | 三菱重工業株式会社 | Rubbing determination device, rubbing determination method, and rubbing determination program for rotary machine |
-
1978
- 1978-05-12 JP JP5557578A patent/JPS54147882A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4685335A (en) * | 1982-03-03 | 1987-08-11 | Hitachi, Ltd. | Method and apparatus for monitoring cracks of a rotatable body |
JPS61196160A (en) * | 1985-02-27 | 1986-08-30 | Kawasaki Steel Corp | Spalling position detector for rolling roll |
JP2018024086A (en) * | 2016-07-29 | 2018-02-15 | オークマ株式会社 | Information measuring device |
EP3547514A4 (en) * | 2016-11-25 | 2020-07-22 | Hitachi, Ltd. | Power conversion device |
JP6456574B1 (en) * | 2018-04-04 | 2019-01-23 | 三菱電機株式会社 | Diagnostic device, sensor data collecting device, diagnostic method, diagnostic program, and diagnostic system |
WO2023176422A1 (en) * | 2022-03-17 | 2023-09-21 | 三菱重工業株式会社 | Rubbing determination device, rubbing determination method, and rubbing determination program for rotary machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0145011B2 (en) | 1989-10-02 |
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