结构滤波器在望远镜主轴控制系统中的应用

邓永停; 李洪文; 王建立; 刘京

doi:10.3788/OPE.20172504.0900

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结构滤波器在望远镜主轴控制系统中的应用

微纳技术与精密机械 | 更新时间：2020-07-07

- 结构滤波器在望远镜主轴控制系统中的应用
- Application of structural filter to principal axis system of telescope
- 光学精密工程 2017年25卷第4期页码：900-909
- 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：
  
  邓永停 (1987-), 男, 山东潍坊人, 助理研究员, 博士, 主要从事望远镜精密跟踪控制技术的研究及电子学设计。E-mail:dyt0612@163.comDENG Yong-ting,E-mail:dyt0612@163.com
  [ "李洪文 (1970-), 男, 四川乐至人, 研究员, 博士生导师, 主要从事地基高分辨率成像光电望远镜电控系统总体设计及电机控制方面的研究。E-mail:lihongwen1970@yahoo.com" ]
- 基金信息：
  
  国家自然科学基金资助项目(11603024)
- DOI：10.3788/OPE.20172504.0900
  中图分类号： TH743;TH703
- 收稿日期：2016-04-05，
  
  录用日期：2016-6-21，
  
  纸质出版日期：2017-04-25
- 稿件说明：
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邓永停, 李洪文, 王建立, 等. 结构滤波器在望远镜主轴控制系统中的应用[J]. 光学精密工程, 2017,25(4):900-909.

Yong-ting DENG, Hong-wen LI, Jian-li WANG, et al. Application of structural filter to principal axis system of telescope[J]. Optics and precision engineering, 2017, 25(4): 900-909.
邓永停, 李洪文, 王建立, 等. 结构滤波器在望远镜主轴控制系统中的应用[J]. 光学精密工程, 2017,25(4):900-909. DOI： 10.3788/OPE.20172504.0900.

Yong-ting DENG, Hong-wen LI, Jian-li WANG, et al. Application of structural filter to principal axis system of telescope[J]. Optics and precision engineering, 2017, 25(4): 900-909. DOI： 10.3788/OPE.20172504.0900.

摘要

为了提高望远镜控制系统的闭环带宽和动态性能，研究了结构滤波器对控制系统闭环性能的影响。根据望远镜机械跟踪架的弹簧质量模型推导了系统的传递函数，分析了电机和负载转动惯量与谐振频率的关系，设计了基于系统开环频率特性的结构滤波器。将设计的结构滤波器串联入控制回路，用于减小机械谐振的幅值。介绍了结构滤波器的设计方法，以及加入结构滤波器后对控制系统闭环性能的影响。最后，在2 m望远镜跟踪架转台上进行了验证实验。结果表明，加入结构滤波器后系统的闭环带宽由10 Hz提高到了13 Hz，有效地抑制了速度的稳态谐振，提高了望远镜控制系统的速度跟踪性能。得到的实验结果验证了结构滤波器能够有效地提高系统的动态性能。

Abstract

To improve the closed-loop bandwidth and dynamic performance of control system in a telescope

the effect of structural filters on the closed-loop performance of the control system was researched. According to the spring-mass model of mechanical tracking frame for the telescope

the transfer function of the system was deduced and the relation between the rotational inertias for electrical machines and loads and the resonant frequencies was analyzed. Then

a structural filter was designed based on frequency characteristics of an open-loop system

and it was added into the control loop to reduce the amplitude of mechanical resonance. The design method of the structural filter was introduced and influence of the added structural filter on the close-loop performance of control system was analyzed. Finally

a confirmatory experiment was performed on a rotary table of tracking frame for a 2-meter-high telescope. The experimental result shows that closed-loop bandwidth of the system increases from 10 Hz to 13 Hz after adding the structural filter

which effectively restrains the stable resonance of speed

improves the speed tracking performance of control system in the telescope. These results verify the effectiveness of the structural filter.

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Keywords

references

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