Vibration error reduction servo for a fiber optic gyroscope

G - Physics – 01 – C

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G01C 19/72 (2006.01)

Patent

CA 2291779

A rectification error reducer for a fiber optic gyroscope, which is an intensity servo or compensator for reducing vibration effects in the optical signals caused by modulation at vibration frequencies induced by the gyroscope operating environment. The vibration effects may be detected in signals from the photodiode output in amplitude form which is used in a control system to null out optical intensity variations at the frequencies of vibration.

L'invention concerne un dispositif de réduction d'erreurs à redressement utile pour un gyroscope à fibre optique, qui est un servomécanisme ou compensateur d'intensité permettant de réduire des effets de vibrations dans des signaux optiques, ces effets étant provoqués par une modulation à des fréquences de vibration induites par le milieu de fonctionnement du gyroscope. Les effets de vibrations peuvent être détectés dans des signaux provenant de la sortie de photodiode sous une forme d'amplitude qui est utilisée dans un système de commande pour annuler des variations d'intensité optique se produisant aux fréquences de vibrations.

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