JPS6120837A - Rubbing detection - Google Patents

Rubbing detection

Info

Publication number
JPS6120837A
JPS6120837A JP59141716A JP14171684A JPS6120837A JP S6120837 A JPS6120837 A JP S6120837A JP 59141716 A JP59141716 A JP 59141716A JP 14171684 A JP14171684 A JP 14171684A JP S6120837 A JPS6120837 A JP S6120837A
Authority
JP
Japan
Prior art keywords
acceleration sensor
frequency
signal
rubbing
varying noise
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
JP59141716A
Other languages
Japanese (ja)
Inventor
Motoi Miyawaki
Original Assignee
Fuji Electric Corp Res & Dev 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 Fuji Electric Corp Res & Dev Ltd filed Critical Fuji Electric Corp Res & Dev Ltd
Priority to JP59141716A priority Critical patent/JPS6120837A/en
Publication of JPS6120837A publication Critical patent/JPS6120837A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines

Abstract

PURPOSE:To eliminate the effect of a varying noise and to make the detection easy by finding the differential output signal between the acceleration sensor having a resonance frequency within the specified frequency range and the acceleration sensor having a uniform sensibility characteristic for the vibration of less than the specific frequency and without resonance frequency within the same frequency range and by comparing with the output signal of a rotary detecting sensor. CONSTITUTION:The 1st acceleration sensor 11 having a resonance frequency within a frequency range of 100-200kHz and the 2nd acceleration sensor 12 having no resonance frequency in the same frequency range and having a uniform sensibility characteristic for the frequency of less than 20kHz are fixed to the almost same place of a rotary machine 16. The output signals of the sensors 11, 12 become detecting signals 6a, 15a, via amplifiers 4, 13, filters 5, 14 and detectors 6, 15. Since a rubbing vibration and varying noise are caused at the fitting place of the sensors 11, 12, the signals 6a, 15a are inputted into a differential amplifier 16 an the differential signal 16a of only rubbing signal from which the varying noise is removed is obtd. The signal 16a is then compared with the output signal of the rotary detecting sensor 3 and the rubbing is detected without the effect of varying noise.
JP59141716A 1984-07-09 1984-07-09 Rubbing detection Pending JPS6120837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59141716A JPS6120837A (en) 1984-07-09 1984-07-09 Rubbing detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59141716A JPS6120837A (en) 1984-07-09 1984-07-09 Rubbing detection

Publications (1)

Publication Number Publication Date
JPS6120837A true JPS6120837A (en) 1986-01-29

Family

ID=15298533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59141716A Pending JPS6120837A (en) 1984-07-09 1984-07-09 Rubbing detection

Country Status (1)

Country Link
JP (1) JPS6120837A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596510A1 (en) * 1986-03-28 1987-10-02 Agency Ind Science Techn DEVICE FOR EVALUATING THE SLIDING OF A MECHANICAL SEAL
JPH03103725A (en) * 1989-05-25 1991-04-30 Hughes Aircraft Co Analyser having adaptability
JPH11287703A (en) * 1998-04-03 1999-10-19 Toshiba Corp Vibration-detecting part and vibration-inspecting apparatus
FR2852693A1 (en) * 2003-03-19 2004-09-24 Kirpy Bearing failure detection device for movable apparatus e.g. stone crusher, has processing system comparing continuous signals of accelerometer to standard layout depicting bearing characteristics and eliminating interfering signal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596510A1 (en) * 1986-03-28 1987-10-02 Agency Ind Science Techn DEVICE FOR EVALUATING THE SLIDING OF A MECHANICAL SEAL
JPS62226033A (en) * 1986-03-28 1987-10-05 Agency Of Ind Science & Technol Evaluating device for sliding state of mechanical seal
JPH0460543B2 (en) * 1986-03-28 1992-09-28 Kogyo Gijutsuin
JPH03103725A (en) * 1989-05-25 1991-04-30 Hughes Aircraft Co Analyser having adaptability
JPH11287703A (en) * 1998-04-03 1999-10-19 Toshiba Corp Vibration-detecting part and vibration-inspecting apparatus
FR2852693A1 (en) * 2003-03-19 2004-09-24 Kirpy Bearing failure detection device for movable apparatus e.g. stone crusher, has processing system comparing continuous signals of accelerometer to standard layout depicting bearing characteristics and eliminating interfering signal

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