The driving mode of silicon micromachined gyroscope adopts the self-excited closed-loop control mode to achieve constant amplitude oscillation of the gyroscope on resonance frequency. Aiming at the signal after the gyroscope starts to vibration

the detection system of the sinusoidal signal amplitude and frequency based on CORDIC algorithm

LMS adaptive algorithm and hardware frequency meter is designed to obtain the vibration amplitude of the gyroscope driven mode. Experiments show that the frequency detection accuracy of the drive response signal is 0. 5 × 10

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the amplitude detection accuracy is 2 × 10

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and the vibration amplitude is basically maintained at 0. 800 V

which proves the practicability of the detection system.