TAN Xiao-yun, LEI Long-gang, LIU Xiao-wei. Research on adaptive closed-loop drive system for capacitive micro-gyroscopes[J]. 2009, 28(10): 35-38. DOI: 10.13873/j.1000-97872009.10.004.
The closed-loop drive system theory of micro-gyroscope is discussed.Considering the characteristics of the micro-gyroscope’s structure and adaptive phase-locked loop
the adaptive closed-loop drive system for micro-gyroscope is designed.Based on the traditional AGC closed-loop drive system model and adaptive closed-loop drive system model
the performances of the closed-loop drive system are simulated and analysed by the Matlab math tools Simulink software.The analysis results show that compared with the traditional AGC closed-loop drive system
setting time of the adaptive closed-loop drive system shorten 69 %.The frequency difference between driving frequency and resonant frequency is only 1 Hz.The frequency stability is 38.46 % of the traditional closed-loop drive system.The SNR of the adaptive closed-loop system is better than the traditional closed-loop drive system.So the detection sensitivity of micro-gyroscope can be improved by using the adaptive closed-loop drive system.
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