Optimization of spatial micro-vibration simulation platform

Zhen-bang XU; De-yong ZHU; Shuai HE; Jun-li SHEN; Liang ZHAO; Ming-yi XIA

doi:10.3788/OPE.20192712.2590

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Optimization of spatial micro-vibration simulation platform

更新时间：2020-07-09

- Optimization of spatial micro-vibration simulation platform
- Optics and Precision Engineering Vol. 27, Issue 12, Pages: 2590-2601(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
  3.中国科学院大学材料与光电研究中心, 北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192712.2590
  CLC： V423.6
- Received：08 May 2019，
  
  Accepted：02 July 2019，
  
  Published：25 December 2019
- 稿件说明：
移动端阅览
Zhen-bang XU, De-yong ZHU, Shuai HE, et al. Optimization of spatial micro-vibration simulation platform[J]. Optics and precision engineering, 2019, 27(12): 2590-2601.
DOI：

Zhen-bang XU, De-yong ZHU, Shuai HE, et al. Optimization of spatial micro-vibration simulation platform[J]. Optics and precision engineering, 2019, 27(12): 2590-2601. DOI： 10.3788/OPE.20192712.2590.

摘要

为了解决在轨光学载荷地面试验振源模拟难的问题，设计了一种基于并联机构的多维微振动模拟平台，能够有效复现空间微振动分布频率宽、振动量级小的特点。首先，利用虚功原理和牛顿-欧拉方程推导了系统固有频率解析式，并结合设计指标进行构型优化。然后根据最优构型进行结构设计和优化，使得平台固有频率满足5~250 Hz的模拟带宽。最后，提出了一种基于传递函数的控制方法，验证了其正确性并对平台工作能力进行了求解。平台第6阶基频3.4 Hz，第7阶基频356 Hz，满足带宽要求；通过传递函数控制得到的输出与目标值之间最大误差为1.54%，说明该方法适用于平台的控制；上平台输出最大平动加速度为399.3 m

，最大角度扰动为1 979.3 μrad，满足指标要求。该平台具有模拟带宽大、高承载、振动量级小的特点，能够作为空间微振动地面试验振源模拟设备。

Abstract

In order to solve the problem of in-orbit optical load ground test vibration source simulation

a multi-dimensional micro-vibration simulation platform based on a parallel mechanism was designed

which can effectively reproduce the characteristics of spatial micro-vibration distribution frequencies and small vibration levels. Firstly

the virtual frequency principle and the Newton-Eulerian equation were used to derive the analytical formula for the natural frequency of the system. This was combined with the design index to optimize the configuration

and the structural design was configured based on this

so that the natural frequency satisfied the analog bandwidth of 5-250 Hz. Finally

a control method based on transfer function was proposed

which verified its correctness and solved the working ability of the platform. The fundamental frequency corresponding to the sixth stage of the platform was observed to be 3.4 Hz

and the fundamental frequency corresponding to the seventh order was observed to be 356 Hz

which satisfied the bandwidth requirement. The maximum error between the output and the target value obtained via the transfer function control is 1.54%

which indicates that the method is suitable for platform control. The maximum translational acceleration of the upper platform is observed to be 399.3 m

and the maximum angular disturbance is detected to be 1 979.3 μrad

which meets the requirements of the index. The platform exhibits large analog bandwidth

high load capacity

and small vibration levels. It can be used as space micro-vibration ground test vibration source simulation equipment.

关键词

Keywords

references

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