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- W2136030158 abstract "In order to improve its structural sensitivity, a vibratory microgyroscope is commonly sealed in high vacuum to increase the drive mode quality factor. The sense mode quality factor of the microgyroscope will also increase simultaneously after vacuum sealing, which will lead to a long decay time of free response and even self-oscillation of the sense mode. As a result, the mechanical performance of the microgyroscope will be seriously degraded. In order to solve this problem, a closed-loop control technique is presented to adjust and optimize the sense mode quality factor. A velocity feedback loop was designed to increase the electric damping of the sense mode vibration. A circuit was fabricated based on this technique, and experimental results indicate that the sense mode quality factor of the microgyroscope was adjusted from 8052 to 428. The decay time of the sense mode free response was shortened from 3 to 0.5 s, and the vibration-rejecting ability of the microgyroscope was improved obviously without sensitivity degradation." @default.
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- W2136030158 date "2013-04-08" @default.
- W2136030158 modified "2023-09-24" @default.
- W2136030158 title "Improvement of mechanical performance for vibratory microgyroscope based on sense mode closed-loop control" @default.
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- W2136030158 doi "https://doi.org/10.1117/1.jmm.12.2.023001" @default.
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