EEI 2022
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Research on the compensation method for damping mismatch of HRG

Conference: EEI 2022 - 4th International Conference on Electronic Engineering and Informatics
06/24/2022 - 06/26/2022 at Guiyang, China

Proceedings: EEI 2022

Pages: 4Language: englishTyp: PDF

Authors:
Bai, Fan; Liu, Shanshan; Liu, Cong (Xian Flight Automatic Control Research Institute, AVIC, China)

Abstract:
Hemispherical resonant gyroscope (HRG) is a new type of Coriolis gyroscope with broad prospects for development. Damping mismatch is one of the main error sources of rate-integrating hemispherical resonant gyroscope. Aiming at the angle-dependent bias drift caused by damping mismatch, a pre-compensation method and a post-compensation method are proposed, which can reduce the gyro drift by 90%. In addition, a virtual rotation method is proposed for the gyro lockin effect caused by anisodamping, which effectively overcomes the lock-in problem of HRG.