空间光学遥感器主镜展开机构重复定位精度分析

提出了基于赫兹接触理论的空间光学遥感器主镜展开机构重复定位精度分析方法,利用该方法分别对Boyes支承和Kelvin支承在两种典型布置方式下进行重复定位误差分析。分析结果表明:Boyes支承的重复定位误差受锁紧力不一致性的影响比Kelvin支承要小;增大定位球直径可以减小因锁紧力不一致性而引起的重复定位误差(绝对值),并且减小的趋势逐渐变缓;在对接面内与旁瓣转轴方向相垂直的方向上,重复定位误差对锁紧力位置误差最为敏感。

Analysis of Repeatability of the Primary Mirror Deployment Mechanism for Space Optical Remote Sensors

Based on the Hertz contact theory,an analysis method for the repeatability of the primary mirror deployment mechanism was put forward.By this method,the repeatability of the Boyes couplings and Kelvin couplings arranging in two typical modes were analyzed.The analysis results show that the repeat position error of the Boyes coupling caused by the inconsistency of the locking force is less than that of the Kelvin coupling.The repeat position error(absolute value) caused by the inconsistency of the locking force decreases slowly as the diameters of the location balls increase.In the perpendicular direction to the rotation axis of the petal,the repeat position error is most sensitive to the position error of the locking force.