JPS5524617A - Phase difference detection - Google Patents
Phase difference detectionInfo
- Publication number
- JPS5524617A JPS5524617A JP9724278A JP9724278A JPS5524617A JP S5524617 A JPS5524617 A JP S5524617A JP 9724278 A JP9724278 A JP 9724278A JP 9724278 A JP9724278 A JP 9724278A JP S5524617 A JPS5524617 A JP S5524617A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- phase difference
- phase
- representative
- difference detection
- 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 obtain information of phase difference among multiple points thereby to make the detection of vibration modes easy by multiplying the signals of two points in a structure.
CONSTITUTION: The outputs of detectors 1 and 2 for acceleration, speed and variation are obtained as signals x1(t) and x2(t) through amplifiers 3 and 4 and filters 5 and 6. The positive and negative portions of the output signals are divided by a rectifier 8, and the divided areas of the signals are integrated at 9 and 10 thereby to determine a representative Ai of the positive signals and a representative Aj of the negative signals. The calculations of equation 1 are performed at 11 on the basis of the Ai and Aj obtained. As a result, it is judged at 12 whether the resultant value are closer to zero or π so that whether the two signals are in phase or out of phase.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9724278A JPS5524617A (en) | 1978-08-11 | 1978-08-11 | Phase difference detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9724278A JPS5524617A (en) | 1978-08-11 | 1978-08-11 | Phase difference detection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5524617A true JPS5524617A (en) | 1980-02-21 |
Family
ID=14187126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9724278A Pending JPS5524617A (en) | 1978-08-11 | 1978-08-11 | Phase difference detection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5524617A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010071728A (en) * | 2008-09-17 | 2010-04-02 | Fuji Heavy Ind Ltd | Distance measuring system |
-
1978
- 1978-08-11 JP JP9724278A patent/JPS5524617A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010071728A (en) * | 2008-09-17 | 2010-04-02 | Fuji Heavy Ind Ltd | Distance measuring system |
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