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JPS55107903A - Measuring method of eccentricity - Google Patents

Measuring method of eccentricity

Info

Publication number
JPS55107903A
JPS55107903A JP1461079A JP1461079A JPS55107903A JP S55107903 A JPS55107903 A JP S55107903A JP 1461079 A JP1461079 A JP 1461079A JP 1461079 A JP1461079 A JP 1461079A JP S55107903 A JPS55107903 A JP S55107903A
Authority
JP
Japan
Prior art keywords
gear
eccentricity
output
sum
rotational frequency
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
JP1461079A
Other languages
Japanese (ja)
Other versions
JPS6140042B2 (en
Inventor
Hiroyuki Wakiwaka
Osamu Maehara
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.)
Ono Sokki Co Ltd
Original Assignee
Ono Sokki Co 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 Ono Sokki Co Ltd filed Critical Ono Sokki Co Ltd
Priority to JP1461079A priority Critical patent/JPS55107903A/en
Publication of JPS55107903A publication Critical patent/JPS55107903A/en
Publication of JPS6140042B2 publication Critical patent/JPS6140042B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE: To enable the measurement of eccentricity independently of rotational frequency, by calculating the eccentricity from the difference and sum of the envelopes of the outputs of two electromagnetic pickup units facing each other across a gear secured on a rotary shaft.
CONSTITUTION: Electromagnetic pickup units 1, 2 are so placed that they face each other across a gear 4 secured on a rotary shaft 3. Each pickup unit sends out a periodical voltage output (a) whose amplitude is proportional to the rotational frequency of the gear 4 and inversely proportional to the l-th power of the gap between the gear 4 and the pickup unit. The output (a) are changed into envelope output (b) by envelope conversion circuits 5, 6. The ratio of the difference between the envelope outputs to their sum is determined by a calculation circuit 7 and picked out. The output (y) of the circuit 7 is calculated according to a formula (1) where (C) denotes the sum of the gaps between the gear 4 and the pickup units 1, 2 and (x) denotes the eccentricity of the gear 4. The eccentricity of the gear 4 can thus be measured independently of its rotational frequency.
COPYRIGHT: (C)1980,JPO&Japio
JP1461079A 1979-02-09 1979-02-09 Measuring method of eccentricity Granted JPS55107903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1461079A JPS55107903A (en) 1979-02-09 1979-02-09 Measuring method of eccentricity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1461079A JPS55107903A (en) 1979-02-09 1979-02-09 Measuring method of eccentricity

Publications (2)

Publication Number Publication Date
JPS55107903A true JPS55107903A (en) 1980-08-19
JPS6140042B2 JPS6140042B2 (en) 1986-09-06

Family

ID=11865961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1461079A Granted JPS55107903A (en) 1979-02-09 1979-02-09 Measuring method of eccentricity

Country Status (1)

Country Link
JP (1) JPS55107903A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173005U (en) * 1986-04-23 1987-11-04
JP2010185838A (en) * 2009-02-13 2010-08-26 Chugoku Electric Power Co Inc:The Apparatus for detecting shaft vibration of rotating device
EP3045871A1 (en) * 2011-11-24 2016-07-20 Toyota Jidosha Kabushiki Kaisha Rotational-angle detection device and electric power-steering device provided with rotational-angle detection device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173005U (en) * 1986-04-23 1987-11-04
JPH051763Y2 (en) * 1986-04-23 1993-01-18
JP2010185838A (en) * 2009-02-13 2010-08-26 Chugoku Electric Power Co Inc:The Apparatus for detecting shaft vibration of rotating device
EP3045871A1 (en) * 2011-11-24 2016-07-20 Toyota Jidosha Kabushiki Kaisha Rotational-angle detection device and electric power-steering device provided with rotational-angle detection device
EP3045870A1 (en) * 2011-11-24 2016-07-20 Toyota Jidosha Kabushiki Kaisha Rotational-angle detection device and electric power-steering device provided with rotational-angle detection device

Also Published As

Publication number Publication date
JPS6140042B2 (en) 1986-09-06

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