ES2072578T3 - Girometro en anillo con modulador electrooptico. - Google Patents

Girometro en anillo con modulador electrooptico.

Info

Publication number
ES2072578T3
ES2072578T3 ES91403442T ES91403442T ES2072578T3 ES 2072578 T3 ES2072578 T3 ES 2072578T3 ES 91403442 T ES91403442 T ES 91403442T ES 91403442 T ES91403442 T ES 91403442T ES 2072578 T3 ES2072578 T3 ES 2072578T3
Authority
ES
Spain
Prior art keywords
ring
waves
ramp
electrooptical
wave
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.)
Expired - Lifetime
Application number
ES91403442T
Other languages
English (en)
Inventor
Jacques Rochereau
Claude Leclerq
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sagem SA
Original Assignee
Sagem SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sagem SA filed Critical Sagem SA
Application granted granted Critical
Publication of ES2072578T3 publication Critical patent/ES2072578T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
    • G01C19/726—Phase nulling gyrometers, i.e. compensating the Sagnac phase shift in a closed loop system

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)

Abstract

EL GIROMETRO COMPRENDE UN GUIA DIELECTRICO DE ONDAS EN ANILLO (10); UNA FUENTE ELECTROMAGNETICA (12) DOTADA DE UN SEPARADOR PARA ENVIAR EN EL ANILLO DOS ONDAS CONTRARROTATIVAS PROCEDENTES DE LA FUENTE; UN DETECTOR DE INTERFERENCIA (22) QUE RECIBE LAS ONDAS CONTRARROTATIVAS; PRIMEROS MEDIOS ELECTROOPTICOS CONTROLADOS PARA DAR A LAS ONDAS UNA MODULACION PERIODICO ALTERNATIVA Y SIMETRICA DE FASE, CON UN PERIODO SENSIBLEMENTE DOBLE DEL TIEMPO DE RECORRIDO DEL ANILLO, COLOCADOS POR ARRIBA DEL ANILLO PARA UNA ONDA Y POR ABAJO PARA OTRA; SEGUNDOS MEDIOS (31) ATACADOS POR UN GENERADOR DE RAMPA DE DESFASE DE PENDIENTE REGULABLE, COLOCADOS POR ARRIBA DEL ANILLO PARA UNA ONDA Y POR DEBAJO PARA OTRA. MEDIOS ELECTRONICOS DE CIERRE DE CIRCUITO Y DE MEDICION CONTROLAN EL SENTIDO Y EL VALOR DE LA PENDIENTE DE RAMPA PARA ANULAR EL DESFASE DE LAS ONDAS RECIBIDAS POR EL DETECTOR DE INTERFERENCIA. EL GIROMETRO COMPRENDE MEDIOS PARA, EN RESPUESTA A LAS INVERSIONES DE POLARIDAD DE LOS PRIMEROS MEDIOS ELECTROOPTICOS, LLEVAR A CERO LA RAMPA DEL GENERADOR DE DESFASE.
ES91403442T 1990-12-21 1991-12-18 Girometro en anillo con modulador electrooptico. Expired - Lifetime ES2072578T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9016122A FR2670885B1 (fr) 1990-12-21 1990-12-21 Gyrometre en anneau a modulateur electro-optique.

Publications (1)

Publication Number Publication Date
ES2072578T3 true ES2072578T3 (es) 1995-07-16

Family

ID=9403551

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91403442T Expired - Lifetime ES2072578T3 (es) 1990-12-21 1991-12-18 Girometro en anillo con modulador electrooptico.

Country Status (6)

Country Link
EP (1) EP0493200B1 (es)
JP (1) JPH0642973A (es)
CA (1) CA2058214A1 (es)
DE (1) DE69109839T2 (es)
ES (1) ES2072578T3 (es)
FR (1) FR2670885B1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2701315B1 (fr) * 1993-02-05 1995-04-28 Sagem Gyromètre à fibre optique à domaine de mesure étendu et procédé s'y rapportant.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555739B1 (fr) * 1980-11-07 1986-04-04 Thomson Csf Dispositif de mesure d'un dephasage non reciproque engendre dans un interferometre en anneau
CA1231252A (en) * 1984-02-17 1988-01-12 Byoung Y. Kim Gated fiber optic rotation sensor with linearized scale factor
EP0358533A3 (en) * 1988-09-09 1991-11-13 Honeywell Inc. Means and methods for measuring a parameter
JPH0652173B2 (ja) * 1989-03-23 1994-07-06 日本航空電子工業株式会社 光千渉角速度計
JPH06103187B2 (ja) * 1989-05-12 1994-12-14 日本航空電子工業株式会社 光干渉角速度計

Also Published As

Publication number Publication date
EP0493200B1 (fr) 1995-05-17
DE69109839D1 (de) 1995-06-22
EP0493200A1 (fr) 1992-07-01
FR2670885A1 (fr) 1992-06-26
CA2058214A1 (fr) 1992-06-22
FR2670885B1 (fr) 1993-04-09
JPH0642973A (ja) 1994-02-18
DE69109839T2 (de) 1995-09-28

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