KEYWORDS: Quartz, Gyroscopes, Filtering (signal processing), Digital signal processing, Demodulation, Phase shifts, Electronic filtering, Signal processing, Transformers, Linear filtering
A signal demodulation scheme for micro quartz tuning fork gyroscope based on digital correlation demodulation
technology is proposed. In the operation of quartz gyroscope the reference signal should be in the resonance state with
steady amplitude and the reference signal should be in-phase and has the same frequency with the driving signal. The
quartz gyroscope signal processing platform is designed on the foundation of DEC6713 DSP development board
successfully. The adaptive algorithm including the reference signal frequency tacking, the amplitude automatic gain
controlling, the reference signal phase locking, and complex correlation demodulation are devised, and the algorithm is
programmed. It is proved that the digital signal process scheme is feasible by means of experimentation.
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