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METHOD OF DETERMINING SYSTEMATIC COMPONENTS OF ZERO SHIFTS OF A THREE-AXIS LASER GYROSCOPE
METHOD OF DETERMINING SYSTEMATIC COMPONENTS OF ZERO SHIFTS OF A THREE-AXIS LASER GYROSCOPE
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机译:测定三轴激光陀螺仪零位移系统组成的方法
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摘要
FIELD: instrument engineering.;SUBSTANCE: invention relates to the field of gyroscopic instrument-making and is intended to determine values of systematic (constant) components of zero offset of triaxial laser gyroscope (TLG) during calibrations (certification) of strapdown inertial navigation systems based on TLG, or their components. Method of determining systematic components of TLG zeros is that predetermined is condition of orthogonality of sensitivity TLG axes, then the laser gyroscope is installed on the turn table faceplate so that the rotation axis of the faceplate is collinear with the main diagonal of the triangular angle formed by the TLG sensitivity axes, and in this position, the Earth's rotation speed projections on the TLG sensitivity axis are determined. Then the faceplate is first turned through angle of 120°, then 240° relative to initial position and in each position of TLG are determined projections of rotation speed of Earth on axis of sensitivity TLG. Then the value of the systematic component of the zero shift of the corresponding TLG sensitivity axis is calculated from the ratio:; ;where i=1, 2, 3 is laser gyroscope sensitivity axis number; ΩE is a complete vector of the Earth's rotation speed (15.041°/h).;EFFECT: reduction of labor intensity, expansion of technological capabilities and improvement of accuracy of determination of systematic components of shifts of zeros TLG.;1 cl
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机译:技术领域本发明涉及陀螺仪制造领域,并且旨在在捷联惯性导航系统的校准(认证)期间确定三轴激光陀螺仪(TLG)的零偏移的系统(恒定)分量的值。基于TLG或其组件。确定TLG零点的系统分量的方法是,预先确定灵敏度TLG轴的正交性条件,然后将激光陀螺仪安装在转台面板上,使面板的旋转轴与所形成的三角角的主对角线共线由TLG灵敏度轴确定,并在该位置确定TLG灵敏度轴上的地球转速投影。然后,首先将面板旋转120°角,然后相对于初始位置旋转240°,并在TLG的每个位置确定地球旋转速度在灵敏度TLG轴上的投影。然后,从以下比率计算相应的TLG灵敏度轴的零偏移的系统分量的值: ;其中i = 1、2、3为激光陀螺仪灵敏度轴数; Ω E Sub>是地球旋转速度(15.041°/ h)的完整向量。效果:减轻了劳动强度,扩大了技术能力,并提高了零位移系统成分的确定精度TLG。; 1厘升
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