JPS6463870A - Light interference angular velocity meter - Google Patents
Light interference angular velocity meterInfo
- Publication number
- JPS6463870A JPS6463870A JP62220758A JP22075887A JPS6463870A JP S6463870 A JPS6463870 A JP S6463870A JP 62220758 A JP62220758 A JP 62220758A JP 22075887 A JP22075887 A JP 22075887A JP S6463870 A JPS6463870 A JP S6463870A
- Authority
- JP
- Japan
- Prior art keywords
- light
- phase modulation
- angular velocity
- phase
- synchronous 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
- Gyroscopes (AREA)
Abstract
PURPOSE:To perform stable operation even when input angular velocity is zero or slight, by controlling a phase modulation mean so as to always bring the ratio of the double wave and quadruple wave components of light modulation frequency due to the phase modulation means to a set value. CONSTITUTION:The light from a light source 11 is distributed by a light distributing coupler 26 and the distributed lights are respectively pass through an optical path 16 in clockwise and counterclockwise directions to be coupled by the light distributing coupler 26 and interfere with each other to be received by a light receiver 21. At this time, a phase modulator 22 applies phase modulation to the lights mutually propagating in reverse directions, and phase modulation frequency and the synchronous detection output of the treble wave component thereof are added to output an angular velocity signal through a linearizer 37. Synchronous detection outputs due to frequencies 2f0, 4f0 are divided in a divider 53 and the difference with the reference value of a reference signal generator 56 is negatively fed back to an automatic voltage controller 49 through an integrator 55 and the voltage of the signal from an oscillator 58 applied to the phase modulator 22 is controlled.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62220758A JPS6463870A (en) | 1987-09-02 | 1987-09-02 | Light interference angular velocity meter |
| US07/236,435 US4883358A (en) | 1987-09-02 | 1988-08-25 | Fiber optic gyro stabilized by harmonic components of detected signal |
| DE3829731A DE3829731A1 (en) | 1987-09-02 | 1988-09-01 | FIBER OPTICAL GYPSY |
| DE3844745A DE3844745C2 (en) | 1987-09-02 | 1988-09-01 | |
| FR888811437A FR2618545B1 (en) | 1987-09-02 | 1988-09-01 | FIBER OPTIC GYROSCOPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62220758A JPS6463870A (en) | 1987-09-02 | 1987-09-02 | Light interference angular velocity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6463870A true JPS6463870A (en) | 1989-03-09 |
Family
ID=16756083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62220758A Pending JPS6463870A (en) | 1987-09-02 | 1987-09-02 | Light interference angular velocity meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6463870A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0450717A (en) * | 1990-06-19 | 1992-02-19 | Tokyo Koku Keiki Kk | Optical fiber gyro |
| JPH05312581A (en) * | 1992-05-14 | 1993-11-22 | Japan Aviation Electron Ind Ltd | Optical interference angular velocity meter |
| JP2015138034A (en) * | 2014-01-22 | 2015-07-30 | ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Adaptive inertial measurement system and method |
-
1987
- 1987-09-02 JP JP62220758A patent/JPS6463870A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0450717A (en) * | 1990-06-19 | 1992-02-19 | Tokyo Koku Keiki Kk | Optical fiber gyro |
| JPH05312581A (en) * | 1992-05-14 | 1993-11-22 | Japan Aviation Electron Ind Ltd | Optical interference angular velocity meter |
| JP2015138034A (en) * | 2014-01-22 | 2015-07-30 | ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Adaptive inertial measurement system and method |
| US10156444B2 (en) | 2014-01-22 | 2018-12-18 | Northrop Grumman Systems Corporation | Adaptive inertial measurement system and method |
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