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The MEMS Disk Resonant Gyroscope (DRG) boasts significant potential for applications in high-precision north-seeking devices and inertial navigation systems, thanks to its compact design, robust thermal stability, and innovative axisymmetric nested ring architecture. Traditional DRG approaches mitigate coupling errors through modal matching and creative designs aimed at addressing frequency splitting issues. However, manufacturing imperfections often introduce asymmetry, which undermines performance. Techniques such as mass adjustment and ion beam cutting, employed in post-processing, can alleviate off-diagonal coupling effects but fail to eliminate the fundamental source of asymmetry, thereby restricting further enhancements in the accuracy of MEMS gyroscopes.
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