JPS5627664A - Single-phase ac signal phase detector - Google Patents
Single-phase ac signal phase detectorInfo
- Publication number
- JPS5627664A JPS5627664A JP10368479A JP10368479A JPS5627664A JP S5627664 A JPS5627664 A JP S5627664A JP 10368479 A JP10368479 A JP 10368479A JP 10368479 A JP10368479 A JP 10368479A JP S5627664 A JPS5627664 A JP S5627664A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- signals
- signal
- sinusoidal
- formula
- 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
- Measuring Phase Differences (AREA)
Abstract
PURPOSE: To prevent an error in a detected phase, by producing two-phase AC input signals from a single-phase AC input signal and using the two-phase signals to continuously perform phase comparison.
CONSTITUTION: A signal eo (Eo) is picked out from a single-phase-to-two-phase converter 8 as one eod of two-phase sinusoidal input signals as the signal eo is not processed. On the other hand, the signal eo is processed through the phase shifter circuit 81, coefficient units 84, 85, 87, etc. of the converter 8 to pick out the other eoq of the two-phase signals. The two-phase sinusoidal signals eod.eoq can be represented by a formula I where θo shows the phase difference between the signals eod, eoq. Two-phase sinusoidal signals e1d, e1q of unit amplitude can be represented by a formula II where Q1 shows the phase difference between the signals e1d, e1q. The phase difference Δθ(=Qo-θ1) between both the pairs of the two-phase sinusoidal signals can be continuously calculated in accordance with a formula III. Continuous phase comparison is thus effected to provide a phase lock loop. This results in preventing an error in a detected phase.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10368479A JPS5627664A (en) | 1979-08-15 | 1979-08-15 | Single-phase ac signal phase detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10368479A JPS5627664A (en) | 1979-08-15 | 1979-08-15 | Single-phase ac signal phase detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5627664A true JPS5627664A (en) | 1981-03-18 |
Family
ID=14360599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10368479A Pending JPS5627664A (en) | 1979-08-15 | 1979-08-15 | Single-phase ac signal phase detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5627664A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0186521A2 (en) * | 1984-12-25 | 1986-07-02 | Victor Company Of Japan, Limited | Digital phase difference detecting circuit |
| JP2005003530A (en) * | 2003-06-12 | 2005-01-06 | Toshiba Corp | Phase detector |
| JP2006129681A (en) * | 2004-10-30 | 2006-05-18 | C & S Kokusai Kenkyusho:Kk | Method of phase detecting single-phase ac signal and power converter using the method |
| JP2008141935A (en) * | 2006-11-29 | 2008-06-19 | C & S Kokusai Kenkyusho:Kk | Detecting method of fundamental wave component of single-phase ac signal |
| JP2009050091A (en) * | 2007-07-25 | 2009-03-05 | Sanken Electric Co Ltd | Phase detector |
-
1979
- 1979-08-15 JP JP10368479A patent/JPS5627664A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0186521A2 (en) * | 1984-12-25 | 1986-07-02 | Victor Company Of Japan, Limited | Digital phase difference detecting circuit |
| JP2005003530A (en) * | 2003-06-12 | 2005-01-06 | Toshiba Corp | Phase detector |
| JP2006129681A (en) * | 2004-10-30 | 2006-05-18 | C & S Kokusai Kenkyusho:Kk | Method of phase detecting single-phase ac signal and power converter using the method |
| JP2008141935A (en) * | 2006-11-29 | 2008-06-19 | C & S Kokusai Kenkyusho:Kk | Detecting method of fundamental wave component of single-phase ac signal |
| JP2009050091A (en) * | 2007-07-25 | 2009-03-05 | Sanken Electric Co Ltd | Phase detector |
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