LAMOST天文望远镜球焦面多光纤并行控制系统研究

RESEARCH ON THE PARALLEL CONTROL SYSTEM OF THE MULTI-OPTICAL FIBER ON THE SPHERICAL FOCAL PLATE FOR LAMOST

针对LAMOST提出多光纤并行控制方案。设计了双回转光纤定位装置;提出了光纤定位系统的总体控制方案,观测之前,进行动态干涉分析确定单元运动轨迹;设计了基于单片2181的步进电动机脉冲扫描控制系统,实现对4000个定位单元的并行控制。试验表明双回转光纤定位单元能够实现光纤的快速精确定位,满足LAMOST光纤定位系统的要求。

The scheme of parallel control system for the 4 000 optical fiber of spherical focal plate for LAMOST (Large sky area multi-object fiber spectroscope telescope) is introduced. The double revolving optical fiber positioning unit device is designed. Then the overall control scheme of the positioning system is proposed. The movement path of each unit is determined by the dynamic interfere analysis before each observation, the drive pulse data of each motor is produced. The control system of pulse scanning method of multi-stepper motors is based on single ADSP-2181, so the movement path of the 4 000 unit is controlled precisely. The experiment result is satisfactory, the optical fiber can be positioned precisely and quickly with the double revolving unit.