Коррекция масштабного коэффициента датчика угловой скорости БИНС быстровращающегося объекта

Abstract

The article is consecrated to the problem of the integration of an angular rate sensor (ARS) triad and a single-axis gyrostabilizer for a fast rotating SINS object. The integration is needed because of too high requirements for the accuracy of the scale factor of the ARS with sensitive axis on the axis of fast rotation. It is not possible to receive an acceptable result with a simple replacement of an AVS by a single-axis gyrostabilizer if its discretization error is too large to attain the needed accuracy. The solution of the integration problem is based on the possibility to refine the scale factor by the comparison of ARS measurements' time integral and frame rotation angle for the same time period. The specialty of the proposed solution is that the scale factor is being refined during all the flight time, the refinement accuracy is increasing with time and the accumulated object's orientation measurement error is corrected by a special algorithm. The article describes and founds the correctness of that algorithm.