JPS6464581A - Revolution counter for dc motor - Google Patents
Revolution counter for dc motorInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-09-03 JP JP62220880A patent/JPH084389B2/en not_active Expired - Fee Related
Patent Citations (4)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |