摘要
目前,三浮陀螺仪误差模型包含沿输出轴的一次项误差系数D_0,该误差项尚无明显的物理意义,但|D_0|的标定结果在0.0002(°)/(h·g)~0.015(°)/(h·g)。针对三浮陀螺仪的结构特点和测试方法分析了D_0的产生机理,通过调整安装误差角的试验说明安装误差角带来的天向地速和一次项分量会影响D_0,因此系统在选用陀螺误差模型时,需关注由测试方法带来的误差。同时,陀螺在设计、生产和调试过程中对安装误差角的影响应予以重视。最后用统计检验的方法说明D_0对误差模型的线性影响不显著,为系统选取陀螺误差模型提供依据。
Nowadays, SDFG's application model equation is including coefficient D_0 which is sensitive times to OA acceleration. There is no exactly explanation for the coefficient which is in the range of 0.0002(°)/(h · g)~0.015(°)/(h · g) according to the testing results. The analysis of this coefficient D_0 based on the SDFG's mechanism structure and testing method are discussed in this paper. By adjusting the misalignment, we could get the test data which show the coefficient D_0 is relative to the SDFG's misalignment. Therefore, it's necessary to take the test error facter into consideration when selecting the model equation. Meanwhile, it is useful to pay enough attention to reduce misalignment during design, manufacting and testing. In the end of the paper, the coefficient was analysed by statistical test, and the results as reference verified that the coefficient D_0 is in creditable.
出处
《导航与控制》
2017年第5期52-57,共6页
Navigation and Control
关键词
三浮陀螺仪
一次项误差系数
显著性分析
安装误差角
single degree of freedom rate integrating gyro(SDFG)
coefficient attributable to acceleration
prominence analysis
misalignment
