JPS6426385A - Correction of motor revolution nonuniformity - Google Patents
Correction of motor revolution nonuniformityInfo
- Publication number
- JPS6426385A JPS6426385A JP62180680A JP18068087A JPS6426385A JP S6426385 A JPS6426385 A JP S6426385A JP 62180680 A JP62180680 A JP 62180680A JP 18068087 A JP18068087 A JP 18068087A JP S6426385 A JPS6426385 A JP S6426385A
- Authority
- JP
- Japan
- Prior art keywords
- cycle length
- speed
- nonuniformity
- motor
- error signal
- 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
Links
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE:To correct motor revolution nonuniformity in actual loading, by getting to store the error of a cycle length of each detected pulse caused by the detection nonuniformity of speed of revolution when a motor is not loaded. CONSTITUTION:When a motor 1 is not loaded, a wow and flutter detection section 9 measures the cycle length of each speed pulse in one revolution, works out the dividing nonuniformity of the cycle length of each speed pulse and writes the difference between the cycle length of each speed pulse and the specified cycle length into a memory 11 as a corrected value. When the motor 1 is actually loaded, a correction section 12 outputs a measured cycle length corrected by a corrected value with the memory 11. An error signal making section 13 outputs a speed error signal in proportion to the cycle length of each speed pulse depending on the output from the correction section 12. An adder 16 adds a speed error signal and a phase error signal and outputs to a drive circuit 17.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62180680A JPS6426385A (en) | 1987-07-20 | 1987-07-20 | Correction of motor revolution nonuniformity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62180680A JPS6426385A (en) | 1987-07-20 | 1987-07-20 | Correction of motor revolution nonuniformity |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426385A true JPS6426385A (en) | 1989-01-27 |
Family
ID=16087427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62180680A Pending JPS6426385A (en) | 1987-07-20 | 1987-07-20 | Correction of motor revolution nonuniformity |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426385A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246787A (en) * | 1989-03-17 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH02246785A (en) * | 1989-03-17 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH02280683A (en) * | 1989-04-21 | 1990-11-16 | Rohm Co Ltd | Speed servo-circuit |
JPH0322888A (en) * | 1989-06-19 | 1991-01-31 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH04156283A (en) * | 1990-10-18 | 1992-05-28 | Matsushita Electric Ind Co Ltd | Apparatus for controlling speed |
JPH04355687A (en) * | 1991-05-30 | 1992-12-09 | Mitsubishi Electric Corp | Motor controller |
JP2012139752A (en) * | 2010-12-28 | 2012-07-26 | Hitachi Koki Co Ltd | Power tool |
CN106208843A (en) * | 2015-05-25 | 2016-12-07 | 罗姆股份有限公司 | Motor drive circuit, driving method, vibrating device and electronic equipment |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826580A (en) * | 1981-08-06 | 1983-02-17 | Canon Inc | Correction of frequency generator |
JPS59226678A (en) * | 1983-06-01 | 1984-12-19 | Mitsubishi Electric Corp | Rotation controller |
JPS6218988A (en) * | 1985-07-17 | 1987-01-27 | Matsushita Electric Ind Co Ltd | Speed controller for motor |
JPS62126882A (en) * | 1985-11-28 | 1987-06-09 | Toshiba Corp | Speed controller |
-
1987
- 1987-07-20 JP JP62180680A patent/JPS6426385A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5826580A (en) * | 1981-08-06 | 1983-02-17 | Canon Inc | Correction of frequency generator |
JPS59226678A (en) * | 1983-06-01 | 1984-12-19 | Mitsubishi Electric Corp | Rotation controller |
JPS6218988A (en) * | 1985-07-17 | 1987-01-27 | Matsushita Electric Ind Co Ltd | Speed controller for motor |
JPS62126882A (en) * | 1985-11-28 | 1987-06-09 | Toshiba Corp | Speed controller |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246787A (en) * | 1989-03-17 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH02246785A (en) * | 1989-03-17 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH02280683A (en) * | 1989-04-21 | 1990-11-16 | Rohm Co Ltd | Speed servo-circuit |
JPH0322888A (en) * | 1989-06-19 | 1991-01-31 | Matsushita Electric Ind Co Ltd | Speed controller |
JPH04156283A (en) * | 1990-10-18 | 1992-05-28 | Matsushita Electric Ind Co Ltd | Apparatus for controlling speed |
JPH04355687A (en) * | 1991-05-30 | 1992-12-09 | Mitsubishi Electric Corp | Motor controller |
JP2012139752A (en) * | 2010-12-28 | 2012-07-26 | Hitachi Koki Co Ltd | Power tool |
CN106208843A (en) * | 2015-05-25 | 2016-12-07 | 罗姆股份有限公司 | Motor drive circuit, driving method, vibrating device and electronic equipment |
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