JPS648884A - Rotary phase detector - Google Patents
Rotary phase detectorInfo
- Publication number
- JPS648884A JPS648884A JP62164502A JP16450287A JPS648884A JP S648884 A JPS648884 A JP S648884A JP 62164502 A JP62164502 A JP 62164502A JP 16450287 A JP16450287 A JP 16450287A JP S648884 A JPS648884 A JP S648884A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- pulse train
- provides
- lagging
- multiplying
- 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 relieve phase lag, by constituting an operating means, a lagging means and a multiplying means such that they have differentiating characteristics. CONSTITUTION:A pulse generating means 2 produces a first pulse train corresponding to rotation of a motor. A phase difference measuring means 3 provides a phase difference between the first pulse train and a referential pulse train 9 to a latch means 4. A pulse generating means 10 provides a second pulse train having frequency two times as high as that of the first pulse train to a lagging means 6. The lagging means 6 delays pulses in the second pulse train by single pulse period every time when a pulse arrives, and provides the delayed pulse to a multiplier 7 for multiplying by a predetermined value smaller than 1. An operating means 5 subtracts the output of the multiplying means 7 from the output of the latch means 4, and provides the result as a rotary phase signal for a motor 1. Consequently, phase lag can be relieved, resulting in a high response.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164502A JPS648884A (en) | 1987-07-01 | 1987-07-01 | Rotary phase detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164502A JPS648884A (en) | 1987-07-01 | 1987-07-01 | Rotary phase detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648884A true JPS648884A (en) | 1989-01-12 |
Family
ID=15794375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164502A Pending JPS648884A (en) | 1987-07-01 | 1987-07-01 | Rotary phase detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648884A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6115577A (en) * | 1984-06-29 | 1986-01-23 | Sony Corp | Speed servo circuit |
| JPS63298163A (en) * | 1987-05-29 | 1988-12-05 | Matsushita Electric Ind Co Ltd | Rotational speed detector |
-
1987
- 1987-07-01 JP JP62164502A patent/JPS648884A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6115577A (en) * | 1984-06-29 | 1986-01-23 | Sony Corp | Speed servo circuit |
| JPS63298163A (en) * | 1987-05-29 | 1988-12-05 | Matsushita Electric Ind Co Ltd | Rotational speed detector |
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