JPS5780527A - Vibration sensing method - Google Patents

Vibration sensing method

Info

Publication number
JPS5780527A
JPS5780527A JP15598880A JP15598880A JPS5780527A JP S5780527 A JPS5780527 A JP S5780527A JP 15598880 A JP15598880 A JP 15598880A JP 15598880 A JP15598880 A JP 15598880A JP S5780527 A JPS5780527 A JP S5780527A
Authority
JP
Japan
Prior art keywords
signal
frequency
vibration
phase
rotating
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
Application number
JP15598880A
Other languages
Japanese (ja)
Other versions
JPS6123489B2 (en
Inventor
Nobuo Kurihara
Mitsuyo Nishikawa
Yasuo Morooka
Kiyoshi Miura
Yoshitoshi Nagahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15598880A priority Critical patent/JPS5780527A/en
Priority to DE19813112188 priority patent/DE3112188A1/en
Priority to US06/249,469 priority patent/US4426641A/en
Publication of JPS5780527A publication Critical patent/JPS5780527A/en
Publication of JPS6123489B2 publication Critical patent/JPS6123489B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To sense a vibration phase highly accurately by analyzing the frequency of vibration waveform, taking out only the rotational frequency component, synchronizing said frequency with the rotating phase of a rotary shaft and the rotating frequency, performing sampling, and performing discrete Fourier transformation of said signal.
CONSTITUTION: A shaft vibration signal 101 is converted into a digital shaft vibration signal 102 by an A/D converter incorporating a sample holder, and further transformed to a frequency spectral signal 103 by a Fourier transformer 15. A rotary pulse gear 7 and a phase reference pulse gear 8 are attached to the end part of a rotor shaft 11. A rotating pulse signal 105 and a phase reference pulse signal 106, which are obtained by electromagnetic pickups 9 and 10, are sensed. A sampling timing signal 107 which is proportional to the frequency of the rotating pulse signal is applied from a timing circuit 17 to the A/D converter 14 from the time point of the application of the phase reference pulse. In this constitution, the phase does not change at any number of rotation or at any time point of analysis, and the vibration can be sensed highly accurately.
COPYRIGHT: (C)1982,JPO&Japio
JP15598880A 1980-03-31 1980-11-07 Vibration sensing method Granted JPS5780527A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP15598880A JPS5780527A (en) 1980-11-07 1980-11-07 Vibration sensing method
DE19813112188 DE3112188A1 (en) 1980-03-31 1981-03-27 METHOD AND DEVICE FOR MONITORING THE VIBRATION OF A ROTATING SHAFT
US06/249,469 US4426641A (en) 1980-03-31 1981-03-31 Method and apparatus for monitoring the shaft vibration of a rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15598880A JPS5780527A (en) 1980-11-07 1980-11-07 Vibration sensing method

Publications (2)

Publication Number Publication Date
JPS5780527A true JPS5780527A (en) 1982-05-20
JPS6123489B2 JPS6123489B2 (en) 1986-06-06

Family

ID=15617889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15598880A Granted JPS5780527A (en) 1980-03-31 1980-11-07 Vibration sensing method

Country Status (1)

Country Link
JP (1) JPS5780527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309861A (en) * 2006-05-22 2007-11-29 Hitachi Ltd Method of acquiring shaft inclination data for reactor coolant recirculation pump, and shaft vibration suppression method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113784U (en) * 1987-01-19 1988-07-22
US9008997B2 (en) * 2009-10-26 2015-04-14 Fluke Corporation System and method for vibration analysis and phase analysis of vibration waveforms using dynamic statistical averaging of tachometer data to accurately calculate rotational speed

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309861A (en) * 2006-05-22 2007-11-29 Hitachi Ltd Method of acquiring shaft inclination data for reactor coolant recirculation pump, and shaft vibration suppression method
JP4491432B2 (en) * 2006-05-22 2010-06-30 日立Ｇｅニュークリア・エナジー株式会社 Axis inclination information acquisition method and axial vibration suppression method for nuclear reactor coolant recirculation pump

Also Published As

Publication number Publication date
JPS6123489B2 (en) 1986-06-06

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