半球谐振陀螺力反馈模式下信号处理方法分析  

Analysis of the Signal Processing Method of HRG Operating in Force to Rebalance Mode

作　　者：江黎[1] 覃施甦[1] 周强[1] 方针[1] 简福斌[1] 彭慧[1] 杨勇[1] 

机构地区：[1]中国电子科技集团公司第26研究所,重庆400060

出　　处：《压电与声光》2014年第6期917-920,共4页Piezoelectrics & Acoustooptics

基　　金：国家"八六三"基金资助项目(2012AA121101)

摘　　要：半球谐振陀螺是一种全固态振动陀螺,力反馈工作模式是其普遍采用的工作模式,而力反馈模式下其信号解调方法对白噪声的敏感度将决定其随机漂移指标。该文就力反馈模式下半球谐振陀螺的信号处理方法对白噪声的敏感度进行了研究,推导了4种信号处理方法(峰值采样解调、开关积分解调、全相位快速傅里叶变换(FFT)解调和相干解调)的计算公式,并采用monte-carlo方法仿真了在白噪声背景下的4种解调方法的性能。结果表明,全相位FFT解调法在不同信号强度下对白噪声均最不敏感,为半球谐振陀螺的信号处理与闭环控制设计提供了理论依据。The hemispherical resonator gyroscope（HRG） which always operates in force rebalance mode is one kind of all solid state gyro. And its drift is always determined by the demodulation method o{ white noise sensitivity. This paper researches the sensitivity about the on-off integrator demodulation, all-Phase-FFT demodulation and bi- static demodulation method, and the formula is computed about the four demodulation methods. The performance of the four demodulation methods in certain AWGN is given by monte-carlo simulation. The all Phase FFT demodulation is proved to be the least sensitive method as the academic base of the signal processing and close loop circuit design of HRG.

关 键 词：半球谐振陀螺 力反馈模式 信号处理 

分 类 号：TN384[电子电信—物理电子学]