超流体物质波干涉陀螺仪的噪声研究  

Research on the Noises of Superfluid Matter Wave Interference Gyroscope

作　　者：赵伟[1] 郑睿[1,2] 刘建业[1] 谢征[1] 

机构地区：[1]南京航空航天大学自动化学院导航研究中心,江苏南京210016 [2]安徽工业大学电气信息学院,安徽马鞍山243002

出　　处：《航空学报》2013年第4期902-908,共7页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(61074162);高等学校博士学科点专项科研基金(200802870011)~~

摘　　要：陀螺仪的精度与其噪声密切相关,为开发新型高精度的超流体物质波干涉陀螺仪,必须对其噪声进行系统研究。根据超流体陀螺噪声产生的机理,分析了该陀螺噪声的来源,并把超流体陀螺的噪声类型归纳为:热、锁定值波动、温度波动、频率波动和检测元件等。在建立了各噪声数学模型的基础上,利用超流体陀螺通用的参数,对其噪声进行了分析。分析结果表明:热噪声与陀螺的结构参数和工作参数相关,与被测角速度无关;锁定值波动噪声只与结构参数相关;其他噪声与结构参数、工作参数和被测角速度都相关;检测元件、频率波动和锁定值波动噪声是构成超流体陀螺输出噪声的主要因素;在角速度变化量的范围内,超流体陀螺的输出噪声非线性变化,在1Hz的带宽下,其变化范围为-7到-6次方的数量级。Gyroscope accuracy is closely related to its noise. To develop a novel superfluid matter wave interference gyro- scope with high accuracy, its noise should be studied systematically. First, according to the generating mechanism of gyro- scope noise, its origins are analyzed. The noise types are classified as thermal, locking value fluctuation, temperature fluc- tuation, frequency fluctuation and detecting element noise. Then, based on the mathematic model of each noise, the gyro- scope noise is analyzed by utilizing some common parameters. The results show that thermal noise is relevant to the gyro- scope structure parameter and working parameter, but is irrelevant to detected angular velocity. Locking fluctuation noise is only relevant to structure parameter; the other noises are all related to structure parameter, working parameter and detected angular velocity. Detecting element, frequency and locking value fluctuation noises are the primary factors that contribute to gyroscope output noise. In the range of the changing value of angular velocity, the gyroscope output noise changes nonlinear- ly with arange from the order of -7 to -6 in 1 Hz bandwidth.

关 键 词：超流体 陀螺仪 物质波 干涉 噪声 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计] U666.1[交通运输工程—船舶及航道工程]