PENG Xincheng, WANG Sujuan, LIU Yuxian, et al. Digital closed-loop drive design based on fuzzy control of MEMS gyroscope[J]. 2019, 38(9): 105-107+111. DOI: 10.13873/J.1000-9787(2019)09-0105-03.
A digital closed-loop drive design for MEMS gyroscope based on fuzzy control is proposed. The application of this method in MEMS gyro driving mode is introduced and implemented on the field programmable gate array( FPGA) platform. Fuzzy control is a kind of intelligent control
it has strong robustness
stability and control ability of nonlinear systems. The proposed method is mainly MEMS gyroscope digital drive closed-loop method based on fuzzy control
process the drive signal of gyro inside the FPGA. Drive and the sine wave signal and demodulation signal are generated by the coordinate rotation digital computer( CORDIC) algorithm. Drive mode displacement signal is demodulated and low-pass filtered
the
amplitude is thermostatic controlled by the fuzzy control. The experimental results show that the design method can make the MEMS gyroscope work under the resonant condition stably
the amplitude is kept constant
and the digital drive closed-loop response signal amplitude jitter precision can reach 51 × 10
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