石英加速度计误差系数显着性分析.pdf

第 19 卷第 5 期 中国惯性技术学报 Vol.19 No.5 2011 年 10 月 Journal of Chinese Inertial Technology Oct. 2011 文章编号：1005-6734(2011)05-0615-06 石英加速度计误差系数显著性分析 刘建波，魏宗康 （北京航天控制仪器研究所，北京 100854 ） 摘要：捷联系统传统标定误差系数的过程中，由于激励不足等试验条件的限制，并非所有被标定的误 差系数均具有可信度，因此有必要对试验结果进行分析，剔除不可信的误差系数，简化误差模型。重 力场试验是常用的误差分离试验之一，在此试验条件下，我们以石英加速度计为对象，提出了一套误 差系数显著性分析方法，对石英加速度计误差模型及其系数进行分析，找出了不可信的误差系数。最 后通过重复性试验对此方法进行验证，重复性试验结果与显著性分析结果完全一致，证实了此方法的 可行性。由于此方法的通用性，在其他试验条件下的误差分离试验中仍可运用。 关 键 词：石英加速度计；重力场试验；显著性分析；重复性试验验证 中图分类号：U666 文献标志码：A Significance analysis of QFPA’s error model’s coefficients LIU Jian-bo, WEI Zong-kang (Beijing Institute of Aerospace Control Devices, Beijing 100854, China) Abstract: As the limit of the test methods, some coefficients of the QFPA’ error model may be unauthentic. Therefore, it’s necessary to analyze the result and reject the unauthentic coefficients and simplify the error model. A method is put forward to solve this problem based on gravitational test which is one of the basic error separation tests and taking QFPA as our test object. In this method, F-distribution is taken as the statistics to verify the hypothesis, and Y-axis error model is taken as an example in detailed analysis. At last, a series of reduplicate tests are made which confirm that the result by this method is in accordance with the analysis result. As its generality, this method can also be applied to other kinds of methods. Key words: quartz accelerometer; gravitational test; significance analysis; reduplicate test 在目前高精度捷联系统类型中，应用最广的有动 误差模型。 调陀螺捷联系统、激光陀螺捷联系统和光纤陀螺捷联