Gyroscopic measurement using a vibrating gyroscope

Details Gyroscopic measurement using a vibrating gyroscope Gyroscopic measurement using a vibrating gyroscope

G - Physics

01

C

G01C 19/56 (2006.01)

Patent

CA 2740529

The invention relates to a gyroscopic system providing measurements using a vibrating gyroscope, vibrating in a first vibrational position and providing a measurement signal. A periodic control signal is applied thereto over a time period, in order to turn (11) the position of vibration in a first direction, during a first part of the time period, bringing about a change, following a first speed profile from the first to a second position and in order to turn (12) the vibration position in a second direction, opposed to the first during the other part of the time period, bringing about a change, following a second speed profile from the second to the first position. The speed profiles indicate a variation in speed with the change in position. The measurements (13) provided by the system are based on a corrected signal obtained by taking the control signal from the gyroscope signal.

Un système gyroscopique fournit des mesures sur la base d'un gyroscope vibrant, qui vibre dans une première position de vibration et fournit un signal de mesure. On lui applique un signal de commande périodique, sur une période de temps : pour faire tourner (11) la position de vibration dans un premier sens, pendant une partie de la période de temps, provocant un changement, selon un premier profil de vitesse, depuis la première jusqu'à une seconde position; et pour faire tourner (12) la position de vibration dans un second sens opposé au premier sens, pendant l'autre partie de la période de temps, provocant un changement, selon un second profil de vitesse, depuis la seconde jusqu'à la première position. Les profils de vitesse indiquent une variation de vitesse du changement de position. Les mesures (13) fournies par le système sont alors basées sur un signal corrigé obtenu en retranchant le signal de commande au signal de mesure du gyroscope.

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