WO1988006275A3 - Device for elininating parasitic rotations of piezoelectric mirrors in laser gyrometers - Google Patents

Device for elininating parasitic rotations of piezoelectric mirrors in laser gyrometers Download PDF

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Publication number
WO1988006275A3
WO1988006275A3 PCT/FR1988/000090 FR8800090W WO8806275A3 WO 1988006275 A3 WO1988006275 A3 WO 1988006275A3 FR 8800090 W FR8800090 W FR 8800090W WO 8806275 A3 WO8806275 A3 WO 8806275A3
Authority
WO
WIPO (PCT)
Prior art keywords
parasitic rotations
elininating
rotations
parasitic
piezoelectric
Prior art date
Application number
PCT/FR1988/000090
Other languages
French (fr)
Other versions
WO1988006275A2 (en
Inventor
Salaberry Bernard Lucien Ch De
Original Assignee
Salaberry Bernard Lucien Charl
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
Priority claimed from FR8702090A external-priority patent/FR2611038B1/en
Priority claimed from FR8705809A external-priority patent/FR2614413A1/en
Application filed by Salaberry Bernard Lucien Charl filed Critical Salaberry Bernard Lucien Charl
Publication of WO1988006275A2 publication Critical patent/WO1988006275A2/en
Publication of WO1988006275A3 publication Critical patent/WO1988006275A3/en

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
    • 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
    • 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
    • G01C19/68—Lock-in prevention
    • G01C19/70—Lock-in prevention by mechanical means

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

A device for eliminating parasitic rotations of mobile mirrors (15) of gyrolasers driven by piezoelectric ceramics (11). These parasitic rotations are caused by deformations of the external parts (12) which constitute the body of the mobile mirror and attached to the optical block (1) by the effect of the accelerations of the activating motion. These parasitic rotations are corrected in the invention by springs (24) attached to the external part of the gyrolaser, which abut on an external part of the piezoelectric mirror assembly farthest from the axis of activation of the gyrolaser and thereby correct the deformations of the external parts (12). The invention is applicable to all lasers and in particular to gyrolasers.
PCT/FR1988/000090 1987-02-18 1988-02-18 Device for elininating parasitic rotations of piezoelectric mirrors in laser gyrometers WO1988006275A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR87/02090 1987-02-18
FR8702090A FR2611038B1 (en) 1987-02-18 1987-02-18 LASER GYROMETER, DEVICE FOR ELIMINATING PARASITIC ROTATIONS OF PIEZOELECTRIC MIRRORS
FR8705809A FR2614413A1 (en) 1987-04-24 1987-04-24 Laser rate gyro, device for eliminating parasitic rotations of the piezoelectric mirrors using inertia forces
FR87/05809 1987-04-24

Publications (2)

Publication Number Publication Date
WO1988006275A2 WO1988006275A2 (en) 1988-08-25
WO1988006275A3 true WO1988006275A3 (en) 1988-12-29

Family

ID=26225788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1988/000090 WO1988006275A2 (en) 1987-02-18 1988-02-18 Device for elininating parasitic rotations of piezoelectric mirrors in laser gyrometers

Country Status (1)

Country Link
WO (1) WO1988006275A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113960960B (en) * 2021-12-22 2022-03-18 沈阳机床(集团)有限责任公司 Method for testing and analyzing rigidity of semi-closed loop servo feeding system of numerical control machine tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001887A1 (en) * 1984-09-14 1986-03-27 Honeywell Inc. Stable path length control elements

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001887A1 (en) * 1984-09-14 1986-03-27 Honeywell Inc. Stable path length control elements

Also Published As

Publication number Publication date
WO1988006275A2 (en) 1988-08-25

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