大射电望远镜FAST馈源支撑两级调整机构联调机理分析

Combined-Adjustment of the Two-Step Adjustment Mechanism for the Feed Support System of a Large Aperture Radio Telescope

从运动学的角度分析了大射电望远镜 FAST馈源支撑系统两级调整机构的联调机理 ,并运用空间矢量工具推导了运动学控制的数学模型 .此外 ,还给出了精调控制方案、Stewart精调机构的控制策略、硬件结构和软件流程 ,并对总体控制系统做了说明 .联调机理分析对实现 FAST馈源支撑系统联调方面做了一次有益的探索 ,有助于FAST研究工作的进展 .

The combined-adjustment principle of a two-step adjustment mechanism for the feed support system of a large aperture radio telescope is analyzed from the point of view of kinematics. The mathematical model used for the kinematic control is derived through a spatial vector method. The control scheme of fine-adjustment mechanism and the control strategy are presented, so also are the hardware configuration and the software flow of the Stewart fine-adjusting mechanism. The whole control system of the telescope feed support is also reviewed. Analysis of the combined-adjustment principle is a beneficial exploration in improving the operating accuracy of the telescope and is of use in the development of the project.