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JPS56128430A - Fault diagnosing device of rotor - Google Patents

Fault diagnosing device of rotor

Info

Publication number
JPS56128430A
JPS56128430A JP3086480A JP3086480A JPS56128430A JP S56128430 A JPS56128430 A JP S56128430A JP 3086480 A JP3086480 A JP 3086480A JP 3086480 A JP3086480 A JP 3086480A JP S56128430 A JPS56128430 A JP S56128430A
Authority
JP
Japan
Prior art keywords
rotor
signal
circuit
background noise
abnormal sound
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
JP3086480A
Other languages
Japanese (ja)
Inventor
Kazuya Sato
Takao Yoneyama
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 JP3086480A priority Critical patent/JPS56128430A/en
Publication of JPS56128430A publication Critical patent/JPS56128430A/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 perform an accurate diagnosis of an abnormal sound without effected by the background noise, by discriminating an abnormal sound from the background noise. CONSTITUTION:An acoustic sensor 3 for rotary part is attached at the rotary part 2 of a rotor 1 to be tested, and this output signal is extracted via the signal transmitting part 4 that transmits the signal to the static side. This output signal is then amplified by an amplifier 5 to be applied as an input signal of the signal processing circuit 6. On the other hand, an acoustic sensor 9 for fixed part is attached at the fixed part 8 to the rotor 1, and this output signal is amplified through an amplifier 10 to be applied as a comparison input of the circuit 6 through a comparing wave detecting circuit 11. An abnormal sound is discriminated from the background noise at the circuit 11.
JP3086480A 1980-03-13 1980-03-13 Fault diagnosing device of rotor Pending JPS56128430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3086480A JPS56128430A (en) 1980-03-13 1980-03-13 Fault diagnosing device of rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3086480A JPS56128430A (en) 1980-03-13 1980-03-13 Fault diagnosing device of rotor

Publications (1)

Publication Number Publication Date
JPS56128430A true JPS56128430A (en) 1981-10-07

Family

ID=12315584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3086480A Pending JPS56128430A (en) 1980-03-13 1980-03-13 Fault diagnosing device of rotor

Country Status (1)

Country Link
JP (1) JPS56128430A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979817A (en) * 1982-09-30 1984-05-09 アライド・コ−ポレ−ション Transducer selector
CN102175299A (en) * 2011-01-20 2011-09-07 奇瑞汽车股份有限公司 Method and system for measuring noise frequency response function
JP2017058293A (en) * 2015-09-18 2017-03-23 日本精工株式会社 Bearing evaluation device
JP2021531460A (en) * 2018-07-17 2021-11-18 ジール・アベッグ エスエー A system consisting of an electric motor, a fan, and an electric motor and an evaluation unit.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979817A (en) * 1982-09-30 1984-05-09 アライド・コ−ポレ−ション Transducer selector
CN102175299A (en) * 2011-01-20 2011-09-07 奇瑞汽车股份有限公司 Method and system for measuring noise frequency response function
JP2017058293A (en) * 2015-09-18 2017-03-23 日本精工株式会社 Bearing evaluation device
JP2021531460A (en) * 2018-07-17 2021-11-18 ジール・アベッグ エスエー A system consisting of an electric motor, a fan, and an electric motor and an evaluation unit.

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