FR2448713A1 - GYROSCOPIC COMPASS - Google Patents

GYROSCOPIC COMPASS

Info

Publication number
FR2448713A1
FR2448713A1 FR8002695A FR8002695A FR2448713A1 FR 2448713 A1 FR2448713 A1 FR 2448713A1 FR 8002695 A FR8002695 A FR 8002695A FR 8002695 A FR8002695 A FR 8002695A FR 2448713 A1 FR2448713 A1 FR 2448713A1
Authority
FR
France
Prior art keywords
axis
gyroscope
plane
place
cancel
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
Application number
FR8002695A
Other languages
French (fr)
Other versions
FR2448713B1 (en
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Publication of FR2448713A1 publication Critical patent/FR2448713A1/en
Application granted granted Critical
Publication of FR2448713B1 publication Critical patent/FR2448713B1/fr
Granted 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
    • G01C19/02—Rotary gyroscopes
    • G01C19/34—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes
    • G01C19/38—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)

Abstract

COMPAS GYROSCOPIQUE A DEUX AXES SENSIBLES ORTHOGONAUX X ET Y POUR DETERMINER LA DIRECTION D'UN POINT CARDINAL, PARTICULIEREMENT DU NORD. L'APPAREIL ETANT SITUE EN UN LIEU DE LATITUDEA, ET LA VERTICALE DU LIEU FAISANT UN ANGLEB AVEC L'AXE DE ROTATION Z DU GYROSCOPE, L'AXE Y EST AMENE ET MAINTENU AVEC PRECISION DANS LE PLAN HORIZONTAL DU LIEU ET POINTE NOMINALEMENT DANS LA DIRECTION EST-OUEST, L'ANGLE D'ECART D'ALIGNEMENT, DESIGNE PARG, ETANT DEJA FAIBLE. ON VEUT ANNULER CET ECART EN FAISANT VIRER LE GYROSCOPE AUTOUR DE SON AXE Z, ET AMENER AINSI LE PLAN AZIMUTAL DE L'AXE X A SE CONFONDRE AVEC LE PLAN MERIDIEN. LES AXESX ET Y SONT EQUIPES DE CAPTEURS DE POSITION ANGULAIRE XP ET YP DONT LES SIGNAUX SORTANTS AMPLIFIES XO ET YO SONT APPLIQUES D'UNE PART A DES GENERATEURS DE COUPLE XT ET YT AGISSANT RESPECTIVEMENT SUR LES CAGES EXTERNE ET INTERNE DU GYROSCOPE, ET D'AUTRE PART, A TRAVERS DES UNITES DE TRAITEMENT 30 ET 31, A UN AMPLIFICATEUR DE SOMMATION ETOU D'INTEGRATION 32 SUIVI D'UN INDICATEUR 33 AFFICHANT L'ANGLEG. L'OPERATEUR FAIT VIRER LE GYROSCOPE JUSQU'A L'ANNULATION DE L'ANGLE AFFICHE, AMENANT AINSI L'AXE X DANS LE PLAN MERIDIEN DU LIEU. APPLICATION A LA DETERMINATION DU NORD GEOGRAPHIQUE.GYROSCOPIC COMPASS WITH TWO SENSITIVE ORTHOGONAL X AND Y AXES TO DETERMINE THE DIRECTION OF A CARDINAL POINT, ESPECIALLY FROM THE NORTH. THE EQUIPMENT BEING LOCATED IN A PLACE OF LATITUDEA, AND THE VERTICAL OF THE PLACE MAKING AN ANGLEB WITH THE Z-AXIS OF THE GYROSCOPE, THE AXIS IS BROUGHT THERE AND MAINTAINED WITH PRECISION IN THE HORIZONTAL PLANE OF THE PLACE AND POINTS NOMINALLY IN THE DIRECTION EAST-WEST, THE RIGHT-OF-RUN ANGLE, DESIGNATED PARG, IS ALREADY LOW. WE WANT TO CANCEL THIS DIFFERENCE BY TURNING THE GYROSCOPE AROUND ITS Z-AXIS, AND THUS BRINGING THE AZIMUTAL PLANE OF THE X-AXIS TO MIX WITH THE MERIDIEN PLANE. THE AXESX AND Y ARE EQUIPPED WITH ANGULAR POSITION SENSORS XP AND YP WHOSE AMPLIFIED OUTPUT SIGNALS XO AND YO ARE APPLIED ON THE ONE HAND TO XT AND YT TORQUE GENERATORS ACTING RESPECTIVELY ON THE EXTERNAL AND INTERNAL CAGES OF THE GYROSCOPE, AND OF ' ON THE OTHER HAND, THROUGH PROCESSING UNITS 30 AND 31, TO A SUMMATION AND OR INTEGRATION AMPLIFIER 32 MONITORING AN INDICATOR 33 DISPLAYING ANGLEG. THE OPERATOR TURNS THE GYROSCOPE UNTIL THE DISPLAYED ANGLE IS CANCEL, THUS BRINGING THE X-AXIS INTO THE MERIDIAN PLANE OF THE SITE. APPLICATION TO THE DETERMINATION OF THE GEOGRAPHICAL NORTH.

FR8002695A 1979-02-09 1980-02-07 GYROSCOPIC COMPASS Granted FR2448713A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7904700A GB2041519B (en) 1979-02-09 1979-02-09 Gyroscopic apparatus

Publications (2)

Publication Number Publication Date
FR2448713A1 true FR2448713A1 (en) 1980-09-05
FR2448713B1 FR2448713B1 (en) 1984-01-06

Family

ID=10503102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8002695A Granted FR2448713A1 (en) 1979-02-09 1980-02-07 GYROSCOPIC COMPASS

Country Status (4)

Country Link
JP (1) JPS55106309A (en)
DE (1) DE3004007A1 (en)
FR (1) FR2448713A1 (en)
GB (1) GB2041519B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH407564A (en) * 1962-10-30 1966-02-15 Filotecnica Salmoiraghi Spa Gyroteodolite for azimuthal measurements referring to geographic north
US3279086A (en) * 1963-08-29 1966-10-18 Bell Aerospace Corp Compensated gyroscopic directional reference

Also Published As

Publication number Publication date
DE3004007A1 (en) 1980-09-11
FR2448713B1 (en) 1984-01-06
JPS6216363B2 (en) 1987-04-13
JPS55106309A (en) 1980-08-15
GB2041519A (en) 1980-09-10
GB2041519B (en) 1983-05-11
DE3004007C2 (en) 1988-07-14

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Legal Events

Date Code Title Description
ST Notification of lapse