Variable stiffness friction damper for dual-state isolation of flywheel on satellite

Guo-yong LIU; Yong-tao HOU; Hai-ping LIU; Peng-peng ZHAO; Dong-mei ZHU

doi:10.37188/OPE.20202807.1539

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Variable stiffness friction damper for dual-state isolation of flywheel on satellite

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

- Variable stiffness friction damper for dual-state isolation of flywheel on satellite
- Optics and Precision Engineering Vol. 28, Issue 7, Pages: 1539-1545(2020)
- 作者机构：
  
  1.北京科技大学机械工程学院, 北京 100083
  2.中国兵器工业第二○八研究所, 北京 102202
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20202807.1539
  CLC： O322;TH113.1;X966
- Received：20 December 2019，
  
  Revised：04 March 2020，
  
  Accepted：04 March 2020，
  
  Published：15 July 2020
- 稿件说明：
移动端阅览
Guo-yong LIU, Yong-tao HOU, Hai-ping LIU, et al. Variable stiffness friction damper for dual-state isolation of flywheel on satellite[J]. Optics and precision engineering, 2020, 28(7): 1539-1545.
DOI：

Guo-yong LIU, Yong-tao HOU, Hai-ping LIU, et al. Variable stiffness friction damper for dual-state isolation of flywheel on satellite[J]. Optics and precision engineering, 2020, 28(7): 1539-1545. DOI： 10.37188/OPE.20202807.1539.

摘要

为了有效抑制星载飞轮在轨姿态调整过程中输出的微振动，并改善发射过程中的动力学环境，提出一种变刚度摩擦阻尼器。根据星载飞轮在轨工作阶段和主动发射阶段的实际载荷条件，采用谐波平衡法得到频域力/绝对位移传递率曲线，并通过实验方法对所得传递率曲线进行了验证。实验结果表明：变刚度摩擦阻尼器在谐振频率处能够提供较大阻尼，将放大系数控制在较小范围内，实测结果和理论解吻合较好。研究结果表明：在轨工作阶段小载荷作用下，变刚度摩擦阻尼器能有效抑制飞轮输出微振动，在保证高频段隔振性能的同时，力传递率峰值约为6.5；在主动发射阶段大载荷作用下，绝对位移传递率峰值约为2.3。由此可见，变刚度摩擦阻尼器能同时兼顾飞轮在不同工作阶段载荷条件变化的影响，显著抑制其动态响应。

Abstract

In this study

a variable stiffness friction damper was proposed that effectively suppresses micro-vibration output during the orbit attitude adjustment of the spaceborne flywheel and improves dynamic environment during launch. Depending on the actual load conditions of the spaceborne flywheel in orbit and active launching phases

the harmonic balance method was used to obtain the frequency domain force/absolute displacement transmissibility curve. The transmissibility curve was verified via experimental methods. The experimental results show that the variable stiffness friction damper can provide greater damping at the resonance frequency and control the amplification factor to a smaller range. The measured results agree well with the theoretical solution. The research results show that under the effect of small load on-orbit phase

the variable stiffness friction damper can effectively suppress the micro-vibration of the flywheel output. On ensuring high frequency vibration isolation performance

the peak value of the force transmissibility is approximately 6.5. Under heavy load during the launching phase

the peak value of the absolute displacement transmissibility is approximately 2.3. Notably

the variable stiffness friction damper can simultaneously consider the influence of the change of the flywheel load conditions in different working phases

and significantly inhibit its dynamic response.

关键词

Keywords

references

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