Analysis of Centroid Variation of Three-floating Gyroscope Based on Error Sensitivity

The surface error of the three-floating gyroscope caused the centroid variation of the three-floating gyroscope, which caused the navigation accuracy to decrease. In this paper, the error sensitivity model of three-floating gyroscope was established by using the geometric error transfer theory, the influence of each surface error to the three-floating gyroscope's centroid was calculated, and the results were verified using modeling software. Finally, this paper evaluated the assembly capabilities of the assembly surface. This paper has guiding significance for the three-floating gyroscope to reduce production cost under the premise of ensuring navigation accuracy.