一米太阳望远镜风载对伺服系统的影响及控制

发布时间：2018-04-01 18:56

本文选题：一米太阳望远镜　切入点：跟踪精度　出处：《光电工程》2011年06期

【摘要】：位于云南抚仙湖的一米太阳望远镜,由于其特殊的光机结构和开放式观测模式,位置控制伺服性能受风的影响较大,这要求望远镜伺服驱动系统应有较好的抗干扰能力。本文首先从一米太阳望远镜的光机特性以及结构出发,介绍了该望远镜伺服系统的数学模型及其数值模拟,重点分析了伺服系统中的速度控制器和位置控制器对风载干扰的改善能力。在保证系统稳定性的前提下,通过提高系统增益来加大伺服系统的刚度,可以满足一米太阳望远镜在四级风下正常工作的要求。最后给出该望远镜在实际风载情况下伺服系统的性能和短期跟踪精度的实验结果,该结果表明望远镜伺服系统能满足科学目标及终端仪器对望远镜跟踪精度的要求。
[Abstract]:Because of its special optical structure and open observation mode, the position control servo performance of the one-meter solar telescope located in Fuxian Lake, Yunnan Province, is greatly affected by the wind. This requires that the telescope servo drive system should have better anti-interference capability. This paper first introduces the mathematical model and numerical simulation of the telescope servo system based on the optical mechanical characteristics and structure of the one-meter solar telescope. The improvement ability of speed controller and position controller to the disturbance of wind load in servo system is analyzed emphatically. Under the premise of ensuring the stability of the system, the stiffness of the servo system is increased by increasing the system gain. It can meet the requirements of normal operation of the 1-meter solar telescope under four winds. Finally, the experimental results of the performance of the servo system and the short-term tracking accuracy of the telescope under the actual wind load are given. The results show that the telescope servo system can meet the requirements of scientific target and terminal instruments for telescope tracking accuracy.
【作者单位】：中国科学院云南天文台光电实验室;中国科学院研究生院;
【基金】：973基金资助项目(2011CB811400)
【分类号】：P111.41

【参考文献】