JP2000509820A - リングレーザージャイロにおける経路長リセットを改善する方法 - Google Patents
リングレーザージャイロにおける経路長リセットを改善する方法Info
- Publication number
- JP2000509820A JP2000509820A JP10536839A JP53683998A JP2000509820A JP 2000509820 A JP2000509820 A JP 2000509820A JP 10536839 A JP10536839 A JP 10536839A JP 53683998 A JP53683998 A JP 53683998A JP 2000509820 A JP2000509820 A JP 2000509820A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- path length
- reset
- ring laser
- laser gyro
- 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
- 238000000034 method Methods 0.000 claims description 2
- 238000002789 length control Methods 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/66—Ring laser gyrometers
- G01C19/661—Ring laser gyrometers details
- G01C19/665—Ring laser gyrometers details control of the cavity
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
- Lasers (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.レーザー空洞の経路長を変化させるための変換器を含む経路長リセット手 段を具備するリングレーザージャイロにおいて、 変調信号を第1のレベルと、第1のレベルより高い第2のレベルで供給する第 1の手段と; 前記第1のレベルの変調信号を使用してレーザーパワー信号を復調して、経路 長を示す復調信号を発生する第2の手段と; 復調信号を積分して経路長駆動信号を発生し且つ経路長リセット信号に応答し て経路長駆動信号をリセットする第3の手段と; リセット信号を供給する第4の手段と; リセット信号が存在しないときに第1のレベルの変調信号を経路長駆動信号に 加算することにより変換器駆動信号を発生し、リセット信号の印加後、少なくと もある期間にわたり、第2のレベルの変調信号を経路長駆動信号に加算する第5 の手段と を有すること特徴とするリングレーザージャイロ。 2.経路長リセット手段を具備するリングレーザージャイロにおいて、 レーザー空洞の経路長を変化させるための変換器と; 変調信号と、周期的に発生されるリセット信号により選択された値にリセット される駆動信号との和の関数として経路長を変化させるために変換器を動作させ 、リセット信号に応答して変調信号の大きさを増加させる駆動手段と を有することを特徴とするリングレーザージャイロ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/803,493 US6067160A (en) | 1997-02-20 | 1997-02-20 | Enchancing path length resets in a ring laser gyro |
US08/803,493 | 1997-02-20 | ||
PCT/US1998/003142 WO1998037382A1 (en) | 1997-02-20 | 1998-02-19 | Enhancing path length resets in a ring laser gyro |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000509820A true JP2000509820A (ja) | 2000-08-02 |
JP4371436B2 JP4371436B2 (ja) | 2009-11-25 |
Family
ID=25186662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53683998A Expired - Fee Related JP4371436B2 (ja) | 1997-02-20 | 1998-02-19 | リングレーザージャイロにおける経路長リセットを改善する方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6067160A (ja) |
EP (1) | EP0900359A1 (ja) |
JP (1) | JP4371436B2 (ja) |
CA (1) | CA2251389A1 (ja) |
WO (1) | WO1998037382A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010025785A (ja) * | 2008-07-22 | 2010-02-04 | Japan Aviation Electronics Industry Ltd | リングレーザジャイロの光路長制御回路及びリングレーザジャイロ |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9829320B2 (en) | 2015-10-22 | 2017-11-28 | Honeywell International Inc. | Systems and methods for dynamic path length control modulation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5357338A (en) * | 1983-07-11 | 1994-10-18 | Litton Systems, Inc. | Path length controller with offset bias for a ring laser gyro |
US4795259A (en) * | 1986-10-31 | 1989-01-03 | Honeywell Inc. | Path length control mechanization for a ring laser angular rate sensor |
US5074664A (en) * | 1991-01-11 | 1991-12-24 | Litton Systems Inc. | Computer generated cavity length control with automatic gain control for ring laser gyros |
US5335063A (en) * | 1991-05-09 | 1994-08-02 | Honeywell Inc. | Laser path length control reset acceleration circuit |
US5450198A (en) * | 1993-10-01 | 1995-09-12 | Honeywell Inc. | Laser gyro microprocessor based smart mode acquisition and high performance mode hopping |
-
1997
- 1997-02-20 US US08/803,493 patent/US6067160A/en not_active Expired - Fee Related
-
1998
- 1998-02-19 CA CA002251389A patent/CA2251389A1/en not_active Abandoned
- 1998-02-19 EP EP98915116A patent/EP0900359A1/en not_active Withdrawn
- 1998-02-19 JP JP53683998A patent/JP4371436B2/ja not_active Expired - Fee Related
- 1998-02-19 WO PCT/US1998/003142 patent/WO1998037382A1/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010025785A (ja) * | 2008-07-22 | 2010-02-04 | Japan Aviation Electronics Industry Ltd | リングレーザジャイロの光路長制御回路及びリングレーザジャイロ |
Also Published As
Publication number | Publication date |
---|---|
WO1998037382A1 (en) | 1998-08-27 |
EP0900359A1 (en) | 1999-03-10 |
CA2251389A1 (en) | 1998-08-27 |
US6067160A (en) | 2000-05-23 |
JP4371436B2 (ja) | 2009-11-25 |
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