Dynamic analysis of two meters telescope mount control system

Yong-ting DENG; Hong-wen LI; Tao CHEN

doi:10.3788/OPE.20182603.0654

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Dynamic analysis of two meters telescope mount control system

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-07-05

- Dynamic analysis of two meters telescope mount control system
- Optics and Precision Engineering Vol. 26, Issue 3, Pages: 654-661(2018)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182603.0654
  CLC：
- Received：08 June 2017，
  
  Accepted：16 August 2017，
  
  Published：25 March 2018
- 稿件说明：
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Yong-ting DENG, Hong-wen LI, Tao CHEN. Dynamic analysis of two meters telescope mount control system[J]. Optics and precision engineering, 2018, 26(3): 654-661.
DOI：

Yong-ting DENG, Hong-wen LI, Tao CHEN. Dynamic analysis of two meters telescope mount control system[J]. Optics and precision engineering, 2018, 26(3): 654-661. DOI： 10.3788/OPE.20182603.0654.

摘要

为了增强望远镜的抗风载扰动能力，提高望远镜跟踪架的跟踪精度，本文对2 m望远镜跟踪架伺服控制系统的动态性能进行了测试和分析。首先，采用正弦扫描信号对望远镜跟踪架的结构和伺服系统进行了频率特性测试；其次，采用基于观测器/卡尔曼滤波器的辨识算法，对跟踪架控制系统的频率特性进行了模型辨识；最后，依据辨识获得的控制模型设计了位置和速度控制器，然后对2 m望远镜跟踪架伺服控制系统进行了目标观测实验，实验结果表明：当跟踪最大速度为3.5(°)/s，最大加速度为1(°)/s

的目标时，方位轴和俯仰轴的最大跟踪误差均小于4.5"，跟踪误差的RMS值分别为0.378 6"和0.151 6"，实验验证了跟踪架控制系统的良好性能。

Abstract

In order to enhance the ability of disturbance rejection for the telescope

and improve the tracking accuracy of the telescope mount control system

this paper analysis the dynamic of mount control system for the two meters telescope. Firstly

the frequency response of telescope mount control system is test using swept sine. Secondly

the Observer/Klaman filter algorithm is employed to identify the model for the mount control system. Finally

the position controller and speed controller are designed based on the mount control model. The experimental results of target observation show that max tracking errors of the azimuth and elevation axis are less than 4.5"

and the tracking error RMS are 0.378 6" and 0.151 6"

when the target moving with the max speed 3.5 (°)/s and the max acceleration 1 (°)/s

. The experiments verify the good dynamic of telescope mount control system.

关键词

Keywords

references

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