离心机精度对加速度计二次项标定精度的影响  

Effects of Centrifuge Performance on the Calibration Precision of Accelerometers Second-Order Coefficient

作　　者：关伟 汤莉[1,2] 张春京 GUAN Wei;TANG Li;ZHANG Chun-jing(National Inertial Products Quality Supervision and Inspection Center of China,Beijing 100039,China;Beijing Institute of Aerospace Control Devices,Beijing 100854,China)

机构地区：[1]国家惯性技术产品质量监督检验中心,北京100039 [2]北京航天控制仪器研究所,北京100854

出　　处：《导航定位与授时》2018年第4期105-108,共4页Navigation Positioning and Timing

基　　金：装发"十三五"预研项目(41417080401);国家重点研发计划(2017YFF0204905)

摘　　要：离心机是标定高精度加速度计二次项系数(k2)的主要设备之一,其精度水平对k2标定精度具有重要影响。为揭示这种影响规律,指导测试设计,在常用的加速度计多项式模型基础上,建立了k2标定精度与离心机精度之间的数学模型,并利用MATLAB仿真。仿真结果表明,k2标定精度受离心机精度及其输出加速度幅度共同影响。在给定离心机精度的情况下,需要根据k2精度目标来设计离心机输出加速度范围,以免影响测试结果。Centrifuge is one of the primary equipments for calibrating the accelerometer second-order coefficient（k2）.The precision of centrifuge has an important effect on the calibration precision of k2.Based on a commonly-used polynomial model of the accelerometer under test,a mathematical model was built to analyze the effect.Then,a simulation was carried out with MATLAB.The simulation results show that the calibration precision of k2 is determined by the precision as well as the output acceleration range of the centrifuge.With the given precision of centrifuge,we should limit the output acceleration range based on the target value of k2 to ensure its calibration precision.

关 键 词：离心机 加速度计 二次项系数 标定 仿真 

分 类 号：U666.16[交通运输工程—船舶及航道工程]