Fully Integrated, 406 $\mu$ A, $\text{5 }^{\circ}$ /hr, Full Digital Output Lissajous Frequency-Modulated Gyroscope
IEEE Transactions on Industrial Electronics(2019)
摘要
In this paper, a complete system of a frequency-modulated gyroscope with digital output for future low-power, high-stability, and wide full-scale applications is presented. The system includes the microelectromechanical transducer, two analog oscillators, two mixed-signal frequency to digital converters, and a fundamental mixed-signal block for the real-time extraction and digitization of the demodulation phase reference. With an overall consumption of 406
$\mu$
A, the system has a 90 dB dynamic range on a 50 Hz bandwidth, with a
$\text{5 }^{\circ }$
/hr stability after 20-min observation interval, and a scale-factor drift coefficient of 20 ppm/K only.
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关键词
Frequency modulation,Gyroscopes,Oscillators,Frequency measurement,Thermal stability,Demodulation,Stability criteria
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