JPS5563407A - Phase comparator in servo circuit - Google Patents
Phase comparator in servo circuitInfo
- Publication number
- JPS5563407A JPS5563407A JP13678978A JP13678978A JPS5563407A JP S5563407 A JPS5563407 A JP S5563407A JP 13678978 A JP13678978 A JP 13678978A JP 13678978 A JP13678978 A JP 13678978A JP S5563407 A JPS5563407 A JP S5563407A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- phase
- pulse
- circuit
- changed
- 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
- Feedback Control In General (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Control Of Electric Motors In General (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE: To quickly perform the phase synchronism of the servo circuit, by continuously changing the phase gain of the phase error signal with the control signal.
CONSTITUTION: The counter 4 counts the phase difference of the servo system output signal and the period is controlled with the reset pulse 9. The write-in pulse generator 10 is operated with the reference signal 7 to control the latch circuit 12. The digital signal 5 of the counter 4 is held at the write-in pulse at the latch circuit 12. Accordingly, the output count signal of the circuit 12 is held until the next write-in pulse 11 is inputted. Thus, the D/A converter 14 converts the signal 13 and outputs the phase error signal 15. In this case, the frequency of the clock pulse 3 is changed with the control signal 1. Thus, even if the phase of the signal 6 and the reference signal 7 is the same, by changing the control voltage of the signal 1, the phase gain of the phase comparison circuit can be changed, since the count value of the ounter 4 is changed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13678978A JPS5563407A (en) | 1978-11-08 | 1978-11-08 | Phase comparator in servo circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13678978A JPS5563407A (en) | 1978-11-08 | 1978-11-08 | Phase comparator in servo circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5563407A true JPS5563407A (en) | 1980-05-13 |
Family
ID=15183546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13678978A Pending JPS5563407A (en) | 1978-11-08 | 1978-11-08 | Phase comparator in servo circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5563407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622392U (en) * | 1985-06-18 | 1987-01-08 | ||
| JPH0230214A (en) * | 1988-07-20 | 1990-01-31 | Nec Corp | Phase comparing circuit |
-
1978
- 1978-11-08 JP JP13678978A patent/JPS5563407A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622392U (en) * | 1985-06-18 | 1987-01-08 | ||
| JPH0540717Y2 (en) * | 1985-06-18 | 1993-10-15 | ||
| JPH0230214A (en) * | 1988-07-20 | 1990-01-31 | Nec Corp | Phase comparing circuit |
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