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Stability Boundary and Enhanced Solution of Dual-Mode Based Micro Gyroscope Mode Matching Technology
Content Provider | MDPI |
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Author | Xing, Changda Wang, Xinning Wang, Zishuo Wang, Yuchen Li, Chong |
Copyright Year | 2022 |
Description | During in-run mode matching under a dual-mode gyro scheme, the stability of the closed-loop control system has a boundary. This phenomenon will lead to the failure of the in-run frequency split calibration scheme when the initial mode mismatch is too severe to exceed the stability boundary. This paper gives a detailed analysis of this stability boundary through simulations and experiments. Results show that the length of the stable region will be affected by the resonant frequency and the Q value. High resonant frequency and low Q value will widen the stable region, but also reduce the sensitivity and rapidity of the calibration. In order to remove the limitation of the stability boundary while applying the in-run frequency split calibration under dual-mode architecture, this paper proposes an enhanced solution that combines both the dual-mode scheme and technology of mode switching. The application of mode switching achieves a pre-calibration of frequency split before the normal gyro operation. This solution is implemented in engineering on a hybrid gyro interface circuit prototype with single-mode and dual-mode. Validation experiments confirmed the effectiveness of this solution. |
Starting Page | 1251 |
e-ISSN | 2072666X |
DOI | 10.3390/mi13081251 |
Journal | Micromachines |
Issue Number | 8 |
Volume Number | 13 |
Language | English |
Publisher | MDPI |
Publisher Date | 2022-08-03 |
Access Restriction | Open |
Subject Keyword | Micromachines Industrial Engineering Mems Gyroscope Dual-mode Scheme Mode Matching Mode Switching |
Content Type | Text |
Resource Type | Article |