A method of servo system resonance suppression based on structure filter

Shi-tao ZHANG; Xian-tao LI; Xian-qi XIA; Feng QIAN

doi:10.3788/OPE.20192708.1811

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A method of servo system resonance suppression based on structure filter

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- A method of servo system resonance suppression based on structure filter
- Optics and Precision Engineering Vol. 27, Issue 8, Pages: 1811-1818(2019)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所，吉林长春 130033
  2.中国科学院大学，北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192708.1811
  CLC： TP273
- Received：18 December 2018，
  
  Accepted：06 February 2019，
  
  Published：15 August 2019
- 稿件说明：
移动端阅览
Shi-tao ZHANG, Xian-tao LI, Xian-qi XIA, et al. A method of servo system resonance suppression based on structure filter[J]. Optics and precision engineering, 2019, 27(8): 1811-1818.
DOI：

Shi-tao ZHANG, Xian-tao LI, Xian-qi XIA, et al. A method of servo system resonance suppression based on structure filter[J]. Optics and precision engineering, 2019, 27(8): 1811-1818. DOI： 10.3788/OPE.20192708.1811.

摘要

针对航空光电稳定平台控制系统面临的机械谐振的问题，在双T型陷波器的基础之上提出了一种新型的结构滤波器。这种新型结构滤波器由两个双T型陷波器和一个低通滤波器构成，能够将谐振峰和反谐振峰同时抑制，克服了单一陷波器不能处理反谐振峰值的缺陷。同时相比于双二次型滤波器，结构滤波器的参数调节更加灵活，既可以调节峰值大小又可以调节峰值宽度。实验结果显示：相比于双二次型滤波器，结构滤波器拟合的谐振曲线与实际的扫频曲线匹配度更好。加入结构滤波器对模型进行补偿以后，控制系统的稳定精度提高了5.74倍，闭环带宽提升了4.54倍。新型结构滤波器对于机械谐振的抑制和控制系统的性能提升有明显作用。

Abstract

To address the problem of mechanical resonance in the control system of an aeronautical optoelectronic stabilization platform

a novel structural filter based on a double-T notch filter was proposed in this study. The new structure filter

consisting of two double-T notches and a low-pass filter

could suppress both resonant and anti-resonant peaks while overcoming the problem whereby a single notch filter could not deal with anti-resonance. Compared to that of the double quadratic filter

the parameter adjustment of the structural filter was more flexible

and its peak size and width can be simultaneously adjusted. In addition

the experimental results show that the resonance curve fitted by the structural filter matches the actual sweep curve better. The stability accuracy of the control system is improved by 5.74 times and the closed-loop bandwidth is increased by 4.54 times after the structural filter is added to compensate the model. The new structure filter clearly aids in suppressing mechanical resonance and improving the performance of the control system.

关键词

Keywords

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