JPS571926A - Diagnosis apparatus for vibration of rotary apparatus - Google Patents

Diagnosis apparatus for vibration of rotary apparatus

Info

Publication number
JPS571926A
JPS571926A JP7432880A JP7432880A JPS571926A JP S571926 A JPS571926 A JP S571926A JP 7432880 A JP7432880 A JP 7432880A JP 7432880 A JP7432880 A JP 7432880A JP S571926 A JPS571926 A JP S571926A
Authority
JP
Japan
Prior art keywords
vibration
change
revolutions
filters
filter
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
Application number
JP7432880A
Other languages
Japanese (ja)
Inventor
Masafumi Takechi
Yoshitoshi Nagahashi
Nobuo Kurihara
Mitsuyo Nishikawa
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 JP7432880A priority Critical patent/JPS571926A/en
Publication of JPS571926A publication Critical patent/JPS571926A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines

Landscapes

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

Abstract

PURPOSE:To permit a vibration diagnosis at high accuracy, by providing a plurality of filters in the stage prior to the frequency analysis of the shaft vibration signal, and changing over said filters to each other according to the change in the number of revolutions or the change of the condition of a rotary apparatus when the analysis is performed. CONSTITUTION:The vibration of a rotating body 1 is detected by a shaft vibrometer 2 and amplified before being inputted to filters 11 and 12. On the other hand, by a pulse gear 9 directly connected to the shaft of the rotating body 1 and a revolution signal generator 10, the signal corresponding to the detected number of revolutions is inputted to a change-over signal generator 14. The change-over signal generator 14 generates a filter changing-over signal according to a prescribed set level so that the filter 11 is used at starting, however, the filter 12 is used when the number of revolutions has increased.
JP7432880A 1980-06-04 1980-06-04 Diagnosis apparatus for vibration of rotary apparatus Pending JPS571926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7432880A JPS571926A (en) 1980-06-04 1980-06-04 Diagnosis apparatus for vibration of rotary apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7432880A JPS571926A (en) 1980-06-04 1980-06-04 Diagnosis apparatus for vibration of rotary apparatus

Publications (1)

Publication Number Publication Date
JPS571926A true JPS571926A (en) 1982-01-07

Family

ID=13543930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7432880A Pending JPS571926A (en) 1980-06-04 1980-06-04 Diagnosis apparatus for vibration of rotary apparatus

Country Status (1)

Country Link
JP (1) JPS571926A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58171105A (en) * 1982-03-31 1983-10-07 Toshiba Corp Amplitude modulator
JPH0590661A (en) * 1991-04-26 1993-04-09 Fanuc Ltd Abnormality detection of blower bearing for gas laser apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58171105A (en) * 1982-03-31 1983-10-07 Toshiba Corp Amplitude modulator
JPH0239881B2 (en) * 1982-03-31 1990-09-07 Tokyo Shibaura Electric Co
JPH0590661A (en) * 1991-04-26 1993-04-09 Fanuc Ltd Abnormality detection of blower bearing for gas laser apparatus

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