JPS6464581A - Revolution counter for dc motor - Google Patents

Revolution counter for dc motor

Info

Publication number
JPS6464581A
JPS6464581A JP62220880A JP22088087A JPS6464581A JP S6464581 A JPS6464581 A JP S6464581A JP 62220880 A JP62220880 A JP 62220880A JP 22088087 A JP22088087 A JP 22088087A JP S6464581 A JPS6464581 A JP S6464581A
Authority
JP
Japan
Prior art keywords
current
motor
signal
pass filter
revolutions
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
JP62220880A
Other languages
Japanese (ja)
Other versions
JPH084389B2 (en
Inventor
Toshihiko Kanai
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.)
Hioki EE Corp
Original Assignee
Hioki EE Corp
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 Hioki EE Corp filed Critical Hioki EE Corp
Priority to JP62220880A priority Critical patent/JPH084389B2/en
Publication of JPS6464581A publication Critical patent/JPS6464581A/en
Publication of JPH084389B2 publication Critical patent/JPH084389B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To enable detecting the number of revolutions of a motor in non- contact manner and with good accuracy by taking out and counting current variation components generated from the current signal of a DC motor with switching of the direction of current of a coil. CONSTITUTION:The current detection signal of a motor 1 detected by a current detecting element 2 is given to a band-pass filter 6 via an amplifier 5. In this case, a Fourier transformer 7 obtains the central fundamental frequency of current variation components generated out of current detection signals at the time of switching of the direction of current of a coil to set the signal passband width of said band pass filter 6. Then, a counter 8 counts the output frequency signal of the band pass filter 6 to output a revolution signal. Thus, the number of revolutions of a motor can be detected in non-contact manner and with good accuracy.
JP62220880A 1987-09-03 1987-09-03 DC motor rotation speed measuring device Expired - Fee Related JPH084389B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62220880A JPH084389B2 (en) 1987-09-03 1987-09-03 DC motor rotation speed measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62220880A JPH084389B2 (en) 1987-09-03 1987-09-03 DC motor rotation speed measuring device

Publications (2)

Publication Number Publication Date
JPS6464581A true JPS6464581A (en) 1989-03-10
JPH084389B2 JPH084389B2 (en) 1996-01-17

Family

ID=16757985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62220880A Expired - Fee Related JPH084389B2 (en) 1987-09-03 1987-09-03 DC motor rotation speed measuring device

Country Status (1)

Country Link
JP (1) JPH084389B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136499U (en) * 1989-04-14 1990-11-14
KR20030042856A (en) * 2001-11-26 2003-06-02 백정복 Method of Measuring Revolution Speed of DC Motor and Device Thereof
GB2416854A (en) * 2003-03-20 2006-02-08 Bruce Stanley Gunton Control and monitoring arrangements for an aperture closure member
JP2010193666A (en) * 2009-02-19 2010-09-02 Aisin Seiki Co Ltd Motor control device
CN102064530A (en) * 2010-11-26 2011-05-18 周厚春 Counting method by detecting current value variation of electromotor and counting sensor used thereby
JP2013212028A (en) * 2012-03-30 2013-10-10 Omron Automotive Electronics Co Ltd Rotation information detection method of electric motor, rotation information detection device of electric motor and electric motor controller
GB2580962A (en) * 2019-02-01 2020-08-05 Digipulse Ltd Motor waveform filtering to determine commutation timing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844714A (en) * 1971-10-12 1973-06-27
JPS53131422A (en) * 1977-04-21 1978-11-16 Matsushita Electric Ind Co Ltd Synchronization, frequency indicator for variable shape pulse
JPS6093500U (en) * 1983-11-29 1985-06-26 パイオニア株式会社 motor drive device
JPS60152278A (en) * 1983-11-23 1985-08-10 ブラック・アンド・デッカー・インコーポレーテッド Method and device for inspecting speed for ac/dc motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4844714A (en) * 1971-10-12 1973-06-27
JPS53131422A (en) * 1977-04-21 1978-11-16 Matsushita Electric Ind Co Ltd Synchronization, frequency indicator for variable shape pulse
JPS60152278A (en) * 1983-11-23 1985-08-10 ブラック・アンド・デッカー・インコーポレーテッド Method and device for inspecting speed for ac/dc motor
JPS6093500U (en) * 1983-11-29 1985-06-26 パイオニア株式会社 motor drive device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136499U (en) * 1989-04-14 1990-11-14
KR20030042856A (en) * 2001-11-26 2003-06-02 백정복 Method of Measuring Revolution Speed of DC Motor and Device Thereof
GB2416854A (en) * 2003-03-20 2006-02-08 Bruce Stanley Gunton Control and monitoring arrangements for an aperture closure member
GB2416854B (en) * 2003-03-20 2007-03-28 Bruce Stanley Gunton Control and monitoring arrangements
JP2010193666A (en) * 2009-02-19 2010-09-02 Aisin Seiki Co Ltd Motor control device
CN102064530A (en) * 2010-11-26 2011-05-18 周厚春 Counting method by detecting current value variation of electromotor and counting sensor used thereby
JP2013212028A (en) * 2012-03-30 2013-10-10 Omron Automotive Electronics Co Ltd Rotation information detection method of electric motor, rotation information detection device of electric motor and electric motor controller
GB2580962A (en) * 2019-02-01 2020-08-05 Digipulse Ltd Motor waveform filtering to determine commutation timing

Also Published As

Publication number Publication date
JPH084389B2 (en) 1996-01-17

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