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MOTEUR-COUPLE AIMANT PERMANENT [1 record]
Record 1 - internal organization data 2002-08-26
Record 1, English
Record 1, Subject field(s)
- Permanent Magnets
- Electromagnetism
- Navigation Instruments
Record 1, Main entry term, English
- permanent magnet torquer
1, record 1, English, permanent%20magnet%20torquer
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- PM torquer 2, record 1, English, PM%20torquer
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
K. R. Rajagopal, "Design and Development of a Permanent Magnet Torquer for a Gyroscope", IEEE Transactions on "Magnetics", Vol. 37, No. 4, July 2001, pp. 2630-2633. 1, record 1, English, - permanent%20magnet%20torquer
Record number: 1, Textual support number: 1 OBS
permanent magnet: A piece of hardened steel or other magnetic material that has been strongly magnetized and retains its magnetism indefinitely. Abbreviated PM. 3, record 1, English, - permanent%20magnet%20torquer
Record number: 1, Textual support number: 2 OBS
torquer (or forcer): A device that exerts a torque (or force) on a gimbal, a gyro rotor, or a proof mass, in response to a command signal. 4, record 1, English, - permanent%20magnet%20torquer
Record 1, Key term(s)
- PM torquer
Record 1, French
Record 1, Domaine(s)
- Aimants permanents
- Électromagnétisme
- Instruments de navigation
Record 1, Main entry term, French
- moteur-couple à aimant permanent
1, record 1, French, moteur%2Dcouple%20%C3%A0%20aimant%20permanent
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] gyromètre [...] Le rappel élastique peut être obtenu par voie mécanique ou électrique. Les dispositifs de rappel mécanique sont soumis aux contraintes technologiques suivantes : non-linéarités (notamment hystérésis), limitant la précision de l'appareil, et fragilité, limitant la réduction du domaine de mesure (le domaine de mesure des gyromètres à rappel mécanique descend difficilement au-dessous de 20 degrés/s). Le rappel par asservissement électronique permet de se libérer de ces contraintes. [...] La précision obtenue est alors fonction de la qualité du moteur-couple à aimant permanent, et de la liaison entre boîtier et carter. Le remplacement du rappel mécanique par le rappel électrique permet [...] de passer de la classe 10-2 ou 10-3 [...] à la classe 10-4 et d'étendre les domaines de mesure, vers le bas, jusqu'à l'ordre de quelques degrés par heure. 1, record 1, French, - moteur%2Dcouple%20%C3%A0%20aimant%20permanent
Record 1, Spanish
Record 1, Textual support, Spanish
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