JPS55103089A - Synchronizing circuit - Google Patents
Synchronizing circuitInfo
- Publication number
- JPS55103089A JPS55103089A JP886279A JP886279A JPS55103089A JP S55103089 A JPS55103089 A JP S55103089A JP 886279 A JP886279 A JP 886279A JP 886279 A JP886279 A JP 886279A JP S55103089 A JPS55103089 A JP S55103089A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- operational amplifier
- signal
- input signal
- difference
- 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)
Abstract
PURPOSE: To perform stable synchronization of quick response to disturbance, by driving a motor by a pulse signal whose amplitude varies depending on the rotational frequency of the motor and whose pulse width changes depending on the difference between the rotational phase of the motor and a reference input signal.
CONSTITUTION: An output from a rotational frequency detecting winding 3 is applied to the second operational amplifier 11 through a peak value or mean value detecting circuit comprising the first operational amplifier 8, a diode 9 and a capacitor 10. The second operational amplifier 11 produces an output signal corresponding to the difference between an input signal and a reference voltage 12. A phase detector 4 generates an output pulse signal of pulse width corresponding to the phase difference between an input signal from the rotational frequency detecting winding 3 and an input signal 7 of reference frequency. The outputs of the second operational amplifier 11 and the phase detector 4 are multiplied by each other in a transistor 13. The multiplied signal is supplied to an input terminal 2 for driving a motor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP886279A JPS55103089A (en) | 1979-01-29 | 1979-01-29 | Synchronizing circuit |
GB7931769A GB2042181B (en) | 1979-01-24 | 1979-09-13 | Determining positional coordinates utilising the terrestrial magnetism as a directional reference |
CA335,542A CA1127304A (en) | 1979-01-24 | 1979-09-13 | Apparatus for determining positional coordinates utilizing the terrestrial magnetism as a directional reference |
FR7923022A FR2447539B1 (en) | 1979-01-24 | 1979-09-14 | |
US06/075,421 US4300390A (en) | 1979-01-24 | 1979-09-14 | Apparatus for determining positional coordinates utilizing the terrestrial magnetism as a directional reference |
DE19792937426 DE2937426A1 (en) | 1979-01-24 | 1979-09-15 | ARRANGEMENT FOR DETERMINING THE LOCAL COORDINATES OF A MOVING OBJECT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP886279A JPS55103089A (en) | 1979-01-29 | 1979-01-29 | Synchronizing circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55103089A true JPS55103089A (en) | 1980-08-06 |
JPS6367440B2 JPS6367440B2 (en) | 1988-12-26 |
Family
ID=11704502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP886279A Granted JPS55103089A (en) | 1979-01-24 | 1979-01-29 | Synchronizing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55103089A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01152985A (en) * | 1987-12-07 | 1989-06-15 | Furuno Electric Co Ltd | Drive/control circuit for dc motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4863710A (en) * | 1971-12-06 | 1973-09-04 | ||
JPS5379213A (en) * | 1976-12-22 | 1978-07-13 | Matsushita Electric Ind Co Ltd | Control device of motor |
-
1979
- 1979-01-29 JP JP886279A patent/JPS55103089A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4863710A (en) * | 1971-12-06 | 1973-09-04 | ||
JPS5379213A (en) * | 1976-12-22 | 1978-07-13 | Matsushita Electric Ind Co Ltd | Control device of motor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01152985A (en) * | 1987-12-07 | 1989-06-15 | Furuno Electric Co Ltd | Drive/control circuit for dc motor |
Also Published As
Publication number | Publication date |
---|---|
JPS6367440B2 (en) | 1988-12-26 |
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