空间光谱仪指向机构的力学分析

刘磊

doi:10.3788/OPE.20152311.3161

您当前的位置：

首页 >

文章列表页 >

空间光谱仪指向机构的力学分析

微纳技术与精密机械 | 更新时间：2020-08-13

- 空间光谱仪指向机构的力学分析
- Mechanical analysis of pointing mechanism for space spectrometer
- 光学精密工程 2015年23卷第11期页码：3161-3167
- 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,中国,130033
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目(No.2010AA1221091001)()
- DOI：10.3788/OPE.20152311.3161
  中图分类号： TP73;TH133.3
- 收稿日期：2014-12-15，
  
  修回日期：2015-02-06，
  
  纸质出版日期：2015-11-25
- 稿件说明：
移动端阅览
刘磊,. 空间光谱仪指向机构的力学分析[J]. 光学精密工程, 2015,23(11): 3161-3167

LIU Lei,. Mechanical analysis of pointing mechanism for space spectrometer[J]. Editorial Office of Optics and Precision Engineering, 2015,23(11): 3161-3167
刘磊,. 空间光谱仪指向机构的力学分析[J]. 光学精密工程, 2015,23(11): 3161-3167 DOI： 10.3788/OPE.20152311.3161.

LIU Lei,. Mechanical analysis of pointing mechanism for space spectrometer[J]. Editorial Office of Optics and Precision Engineering, 2015,23(11): 3161-3167 DOI： 10.3788/OPE.20152311.3161.

摘要

为了准确分析空间CO

光谱仪指向机构的力学特性

本文根据轴承结构参数

建立了轴承有限元接触分析模型。计算了不同载荷下轴心的位移量

用多项式对计算结果进行拟合得到轴承非线性刚度曲线。在指向机构有限元力学模型中

利用相应刚度的弹簧单元替代轴承结构

经过有限元频率响应分析后获得指向机构的动态特性。仿真实验显示:在重力工况下指向镜的面形在光轴和子午方向分别为19.23 nm和19.27 nm

满足优于

/30(均方根值RMS

=632.8 nm)的设计要求

3个方向基频均大于100 Hz。振动试验显示

3个方向基频均优于100 Hz

振动试验后反射镜镜面面形精度为

/35。分析结果与仿真结果相符

表明利用非线性接触分析方法可以较为准确地求解轴承刚度

同时空间光谱仪指向机构静/动力学性能满足设计要求。

Abstract

To accurately analyze dynamic characteristics of pointing mechanism of a CO

space spectrometer

a bearing finite element contact analysis model was established according to the bearing structural parameters in this paper. The displacements with different loads for an axis were calculated

and the nonlinear stiffness curve for the bearing was obtained by the polynomial fitting for calculated results. In finite element dynamic analysis model of pointing mechanism

a spring unit with corresponding stiffness was used to replace the bearing structure

and the dynamic characteristics of the pointing mechanism were obtained by analysis of infinite element frequency response. The simulation experiment shows that the surface shape of mirror is 19.23 nm and 19.27 nm in optics axis and meridian direction at a static condition

which satisfy the design requirement of

/30(RMS

=632.8 nm) and all base frequencies in 3 directions are over 100 Hz. Moreover

mechanical vibration experiments also verify that all base frequencies in 3 directions are over 100 Hz and the surface shape accuracy of the mirror is

/35. The calculation results agree well with the experimental results. It concludes that the analysis method with nonlinear contact solves the bearing stiffness accurately

and the static/dynamic performance of pointing mechanism meets design requirements.

关键词

Keywords

references

STONEB J. The state of the art in the measurement of the stiffness and damping of rolling element bearings[J]. Annals of the CIRP, 1982,529-534.

KRAUS J, BLECH J J, BRAUN S G. In situ determination of rolling bearing stiffness and damping by model analysis[J]. Journal of Vibration, Acoustic, Stress, and Reliability in design, 1987.109(3):235-240.

LIU J G, UWE F H. Andreas sch necker, Accuracy improvement of impedance measurements by using the self-calibration[J].Measurement of the International Measurement Confederation, 1999, 25(3):213-225.

MA Z Z. Precise dynamic angular measurement with inductosyn transducer[C]. Second International Symposium on Inertial Technology in Beijing,1998,37-45.

ROYSTON T J, BASDOGAN I. Vibration transmission through self-Aligning(spherical) rolling element bearings-theory and experiment[J]. Journal of Sound and Vibration, 1998,215(5):997-1014.

唐云冰, 罗贵火,等. 高速陶瓷滚动轴承等效刚度分析与试验[J]. 航空动力,2005(2):240-244. TANG Y B, LUO G H. Theoretical analysis and experiment of the high speed ceramic rolling bearing equivalent stiffness[J]. Journal of Aerospace Power,2005(2):240-244.(in Chinese)

KARACAY T,AKTURK N. Vibrations of a grinding spindle supported by angular contact ball-bearings[C]. Proceedings of Institution of Mechanical Engineers Part K Journal of Multi-body Dynamics, 2008,222:61-74.

RAJIV T, NALINAKSH S V. Stiffness estimation from random response bearing systems[J]. Probabilistic Engineering Mechanics,1998, 13(4):255-268.

LAMBERT R J, POLLARD A, STONE B J. Some characteristics of rolling-element bearings under oscillating conditions.Part 1:theory and rig design[C]. Proceedings of the Institution of Mechanical Engineers-Part K-Journal of Multi-body Dynamics,2006, 220:157-170.

LAMBERT R J, POLLARD A, STONE B J. Some characteristics of rolling-element bearings under oscillating conditions. Part 2:experimental results for interference-fitted taper-roller bearings[C]. Proceedings of the Institution of Mechanical Engineers-Part K-Journal of Multi-body Dynamics. 2006, 220:171-179..

黄琳琳. 滚动轴承刚度的非线性分析及工程应用[D]. 大连:大连理工大学,2009. HUANG L L. The nonlinear analysis and engineering application to rolling bearing stiffness[D]. Dalian:Dalian University of Technology,2009.(in Chinese)

浏览量

558

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

一种空间光学镜并联指向机构优化设计

空间光学镜并联指向机构优化

超精密机床径推一体式空气静压轴承的静态特性