JPS5690220A - Abnormal oscillation diagnostic device - Google Patents
Abnormal oscillation diagnostic deviceInfo
- Publication number
- JPS5690220A JPS5690220A JP16686179A JP16686179A JPS5690220A JP S5690220 A JPS5690220 A JP S5690220A JP 16686179 A JP16686179 A JP 16686179A JP 16686179 A JP16686179 A JP 16686179A JP S5690220 A JPS5690220 A JP S5690220A
- Authority
- JP
- Japan
- Prior art keywords
- analytical
- oscillation signal
- input
- period
- fft
- 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.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 title abstract 5
- 230000002159 abnormal effect Effects 0.000 title abstract 2
- 230000005856 abnormality Effects 0.000 abstract 2
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To arrange so that an abnormal condition may easily be monitored by making an analytical period when an oscillation signal is input variable in response to the rotary frequency of a rotary machine, fourier-analyzing the analytical period and judging an abnormality through comparison of the analytical results with a preset limited value.
CONSTITUTION: A high-speed input device 4 outputs an input oscillation signal Siv based on an output (analytical period signal) from an analytical period arithmetic device 9 which operates an oscillation signal Sv and a number of rotations NR according to a formula I. FFT analytical device 10 carries out FFT analysis based on an input oscillation signal Siv, outputting an amplitude value a1 to a comparator 11. The comparator 11 compares a limited value memorized beforehand corresponding to the number of rotations NR with an output from FFT analytical device 10 and selects either of "abnormality", "caution" or "normality" depending on the comparison results and displays it on an indicator 12.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16686179A JPS5690220A (en) | 1979-12-24 | 1979-12-24 | Abnormal oscillation diagnostic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16686179A JPS5690220A (en) | 1979-12-24 | 1979-12-24 | Abnormal oscillation diagnostic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5690220A true JPS5690220A (en) | 1981-07-22 |
Family
ID=15838995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16686179A Pending JPS5690220A (en) | 1979-12-24 | 1979-12-24 | Abnormal oscillation diagnostic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5690220A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963527A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | Diagnosing method of rotatry machine |
| JPS5963526A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| WO1994022025A1 (en) * | 1993-03-22 | 1994-09-29 | Exxon Chemical Patents Inc. | Plant parameter detection by monitoring of power spectral densities |
| US5420501A (en) * | 1993-02-01 | 1995-05-30 | Nsk Ltd. | Frequency spectrum analyzer |
| US5790413A (en) * | 1993-03-22 | 1998-08-04 | Exxon Chemical Patents Inc. | Plant parameter detection by monitoring of power spectral densities |
| JP2016118419A (en) * | 2014-12-19 | 2016-06-30 | 公立大学法人県立広島大学 | Vibration analysis device and program for rotary machine |
| US10835356B2 (en) | 2016-01-25 | 2020-11-17 | Water Pik, Inc. | Swivel assembly for oral irrigator handle |
| US11213376B2 (en) | 2016-01-25 | 2022-01-04 | Water Pik, Inc. | Reduced form factor oral irrigator |
-
1979
- 1979-12-24 JP JP16686179A patent/JPS5690220A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963527A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | Diagnosing method of rotatry machine |
| JPS5963526A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| US5420501A (en) * | 1993-02-01 | 1995-05-30 | Nsk Ltd. | Frequency spectrum analyzer |
| WO1994022025A1 (en) * | 1993-03-22 | 1994-09-29 | Exxon Chemical Patents Inc. | Plant parameter detection by monitoring of power spectral densities |
| US5790413A (en) * | 1993-03-22 | 1998-08-04 | Exxon Chemical Patents Inc. | Plant parameter detection by monitoring of power spectral densities |
| JP2016118419A (en) * | 2014-12-19 | 2016-06-30 | 公立大学法人県立広島大学 | Vibration analysis device and program for rotary machine |
| US10835356B2 (en) | 2016-01-25 | 2020-11-17 | Water Pik, Inc. | Swivel assembly for oral irrigator handle |
| US11213376B2 (en) | 2016-01-25 | 2022-01-04 | Water Pik, Inc. | Reduced form factor oral irrigator |
| US11642203B2 (en) | 2016-01-25 | 2023-05-09 | Water Pik, Inc. | Oral irrigator handle with hose connector fittings |
| US12186147B2 (en) | 2016-01-25 | 2025-01-07 | Water Pik, Inc. | Reduced form factor oral irrigator |
| US12207983B2 (en) | 2016-01-25 | 2025-01-28 | Water Pik, Inc. | Oral irrigator handle with hose connector fittings |
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