Abstract
Phase is an important issue in a vibratory-rate gyroscope for Coriolis signal demodulation and off-axis motion compensation. This paper uses a simplified three-dimensional comb model to analyze the motion coupling and the phase relation between the Coriolis signal and coupled signals for a lateral-axis CMOS-MEMS gyroscope. It is found that the off-axis motion is highly nonlinear and dominates the coupled motions in the comb-drive actuation. The phase relation was verified experimentally.
Original language | English |
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Pages (from-to) | 319-324 |
Number of pages | 6 |
Journal | International Journal of Nonlinear Sciences and Numerical Simulation |
Volume | 3 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
Keywords
- CMOS-MEMS
- Gyroscope
- Motion coupling
- Phase
- Quadrature