IT1267106B1 - Controllo di lunghezza di una cavita' generato da un elaboratore con controllo automatico di guadagno per giroscopi a laser ad anello. - Google Patents
Controllo di lunghezza di una cavita' generato da un elaboratore con controllo automatico di guadagno per giroscopi a laser ad anello.Info
- Publication number
- IT1267106B1 IT1267106B1 IT92RM000010A ITRM920010A IT1267106B1 IT 1267106 B1 IT1267106 B1 IT 1267106B1 IT 92RM000010 A IT92RM000010 A IT 92RM000010A IT RM920010 A ITRM920010 A IT RM920010A IT 1267106 B1 IT1267106 B1 IT 1267106B1
- Authority
- IT
- Italy
- Prior art keywords
- ring
- digital
- mirrors
- voltage
- computer
- Prior art date
Links
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
Un giroscopio laser ad anello avente un laser ad anello che ha preferibilmente quattro lati e quattro specchi di spigolo. Almeno uno degli specchi di spigolo è parzialmente trasmittente, e il fascio trasmesso viene rivelato e convertito in un segnale digitale. Il segnale digitale viene retroazionato in due anelli di elaboratore su almeno un convertitore digitale-analogico, e quindi su un trasduttore che aziona almeno uno specchio di spigolo verso l'interno e verso l'esterno. Uno degli anelli dell'elaboratore include un demodulatore a gradini avente quattro gradini per ciclo. I gradini hanno tensioni nella tensione di lavoro del trasduttore, quella tensione più un incremento, la tensione di lavoro, e quella tensione meno un decremento. Il primo anello invia una tensione di lavoro ai convertitori digitale-analogico. Il secondo anello demodula il segnale del fascio in una seconda armonica della demodulazione del primo anello onde produrre un segnale di tensione che controlla l'ampiezza di "dithering" degli specchi mobili. Un modulatore a gradini, in sincronismo con il demodulatore del primo anello, fornisce un segnale di modulazione ai convertitori digitali-analogici onde spostare a gradini gli specchi mobili. La tensione di lavoro sposta gli specchi in una posizione in cui la cavità laser opera nei picchi del suo modo di intensità.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/640,179 US5074664A (en) | 1991-01-11 | 1991-01-11 | Computer generated cavity length control with automatic gain control for ring laser gyros |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM920010A0 ITRM920010A0 (it) | 1992-01-09 |
ITRM920010A1 ITRM920010A1 (it) | 1993-07-09 |
IT1267106B1 true IT1267106B1 (it) | 1997-01-24 |
Family
ID=24567166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT92RM000010A IT1267106B1 (it) | 1991-01-11 | 1992-01-09 | Controllo di lunghezza di una cavita' generato da un elaboratore con controllo automatico di guadagno per giroscopi a laser ad anello. |
Country Status (6)
Country | Link |
---|---|
US (1) | US5074664A (it) |
CA (1) | CA2048357C (it) |
DE (1) | DE4126905C2 (it) |
FR (1) | FR2672986B1 (it) |
GB (1) | GB2254184B (it) |
IT (1) | IT1267106B1 (it) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5208653A (en) * | 1991-08-06 | 1993-05-04 | Litton Systems, Inc. | Multioscillator ring laser gyroscope adaptive digitally controlled cavity length control system |
US5374990A (en) * | 1991-01-11 | 1994-12-20 | Litton Systems, Inc. | Active magnetic field tuning for dispersion equalization of a multi-oscillator |
US5309459A (en) * | 1992-10-20 | 1994-05-03 | Honeywell, Inc. | Laser gyro smart digital PLC acquisition control |
US5450198A (en) * | 1993-10-01 | 1995-09-12 | Honeywell Inc. | Laser gyro microprocessor based smart mode acquisition and high performance mode hopping |
US6067160A (en) * | 1997-02-20 | 2000-05-23 | Honeywell Inc. | Enchancing path length resets in a ring laser gyro |
DE10018778A1 (de) * | 2000-04-15 | 2001-10-18 | Zeiss Carl Jena Gmbh | Verfahren und Anordnung zur Selbstkalibrierung eines diodengepumpten Festkörperlasers, insbesondere eines durchstimmbaren, diodengepumpten Festkörperlasers |
US7058111B2 (en) * | 2001-05-24 | 2006-06-06 | Honeywell International Inc. | Arrangements for increasing sputter life in gas discharge tubes |
US7271915B2 (en) * | 2005-02-04 | 2007-09-18 | Honeywell International Inc. | System, circuit and method for off-mode-peak operation of ring laser gyroscopes |
CN102003958B (zh) * | 2010-10-01 | 2012-07-04 | 中国人民解放军国防科学技术大学 | 四频激光陀螺工作点的控制装置 |
RU2487317C1 (ru) * | 2012-02-09 | 2013-07-10 | Открытое акционерное общество "Раменский приборостроительный завод" (ОАО "РПЗ") | Резонатор лазерного гироскопа |
CN110514196A (zh) * | 2019-08-13 | 2019-11-29 | 中国航空工业集团公司西安飞行自动控制研究所 | 腔长控制系统及环形激光测角装置的刻度系数补偿方法 |
CN112556679B (zh) * | 2020-11-19 | 2022-03-18 | 中国人民解放军国防科技大学 | 一种正负旋塞曼空间四频差动激光陀螺 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503005A (en) * | 1967-10-17 | 1970-03-24 | Honeywell Inc | Ring laser which is biased to permit two equal intensity transition frequencies to be generated in opposite directions |
IL61156A (en) * | 1979-11-05 | 1983-07-31 | Litton Systems Inc | Dithered ring laser with minimized mirror backscattering |
DE3009796C2 (de) * | 1980-03-14 | 1984-04-12 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln | Drehgeschwindigkeitssensor auf der Basis eines Ringlasers |
US4755057A (en) * | 1984-10-02 | 1988-07-05 | Litton Systems, Inc. | Path length control method for ring laser gyroscope |
US4781462A (en) * | 1987-02-09 | 1988-11-01 | The Singer Company | Path length control signal derivation circuit for a laser angular rate sensor |
US4963026A (en) * | 1988-03-14 | 1990-10-16 | Litton Systems, Inc. | Cavity length control apparatus for a multi-oscillator |
-
1991
- 1991-01-11 US US07/640,179 patent/US5074664A/en not_active Expired - Lifetime
- 1991-08-02 CA CA002048357A patent/CA2048357C/en not_active Expired - Fee Related
- 1991-08-14 DE DE4126905A patent/DE4126905C2/de not_active Expired - Fee Related
-
1992
- 1992-01-09 IT IT92RM000010A patent/IT1267106B1/it active IP Right Grant
- 1992-01-10 GB GB9200476A patent/GB2254184B/en not_active Expired - Fee Related
- 1992-01-10 FR FR9200195A patent/FR2672986B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2048357C (en) | 1995-12-19 |
CA2048357A1 (en) | 1992-07-12 |
FR2672986B1 (fr) | 1993-12-10 |
US5074664A (en) | 1991-12-24 |
ITRM920010A1 (it) | 1993-07-09 |
GB2254184B (en) | 1994-11-23 |
FR2672986A1 (fr) | 1992-08-21 |
GB9200476D0 (en) | 1992-02-26 |
ITRM920010A0 (it) | 1992-01-09 |
GB2254184A (en) | 1992-09-30 |
DE4126905A1 (de) | 1992-07-16 |
DE4126905C2 (de) | 2000-04-13 |
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TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19960125 |