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摆式加速度计通常被安装在仪器盒中,以装在仪器盒外壳上的基准镜作为参考建立坐标系,测量加速度计输入轴相对于基准镜坐标系的几何关系从而获得加速度计输入轴的实际指向。按照国军标在分度头上进行四点翻滚实验,能够很方便地测量加速度计输入轴相对于输入基准轴的失准角。利用基准镜法线调节水平方法将基准镜的法线在初始时刻调节到水平方向,从而能够通过四点翻滚实验精确测量加速度计的失准角,建立加速度计的输入轴与基准镜坐标系之间的关系。
A pendulum accelerometer is usually mounted in the instrument housing and a reference frame mounted on the housing of the instrument is used as a reference to establish the coordinate system and to measure the geometry of the accelerometer input shaft with respect to the reference mirror coordinate system so as to obtain the actual accelerometer input shaft direction. In accordance with the national military standard indexing head in the four-point rollover test, can easily measure the input axis of the accelerometer relative to the input axis of misalignment. Using the normal method of the normal reflection of the reference mirror, the normal of the reference mirror is adjusted to the horizontal direction at the initial moment, so that the misalignment angle of the accelerometer can be precisely measured through the four-point rolling experiment to establish the accelerometer input axis and the reference mirror coordinate system Relationship between.