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In this paper, a bulk micro machined lateral-axis TFG (tuning fork gyroscope) with improved architecture and combined mechanism sensing capacitors is reported. The combined sensing capacitors make the TFG have high sensitivity and good linearity even under wide input range and fabrication imperfection. Moreover, the decoupled comb drive, together with the improved architecture, can efficiently decouple...
This letter presents a novel comb capacitor which can decouple the mechanical crosstalk between the sensing and driving modes of gyroscopes. The capacitance and electrostatic force of the comb capacitor are simulated and analyzed to verify the decoupling principle. A lateral-axis tuning-fork gyroscope is used successfully to demonstrate the decoupling capability of the comb capacitor, resulting in...
A decoupled lateral-axis TFG (tuning fork gyroscope) with novel driving and sensing combs is presented. The EFBD (electrostatic force balanced comb driver) adopted in the TFG can efficiently suppress the mechanical coupling in a simple manner. The structure of the gyroscope is also optimized to suppress the coupling further. Moreover, torsional sensing combs are adopted to detect the out-of-plane...
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