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1.中国科学院 西安光学精密机械研究所, 陕西 西安 710119
2.中国科学院大学, 北京 100049
3.西安交通大学 热流科学与工程教育部重点实验室, 陕西 西安 710049
上官爱红(1981-),女,河南三门峡人,硕士,高级工程师,2005年于西安电子科技大学获得硕士学位,主要从事空间光电跟踪机构环境适应性、寿命、热控制等方面的研究。E-mail:xiner@opt.ac.cn E-mail:xiner@opt.ac.cn
[ "刘朝晖(1965-),男,陕西西安人,研究员,博士生导师,主要从事空间光电跟踪与测量技术,红外探测技术等方面的研究。E-mail:lzh@opt.ac.cn" ]
收稿日期:2016-01-05,
录用日期:2016-2-11,
纸质出版日期:2016-08-25
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上官爱红, 王晨洁, 张昊苏, 等. 月基望远镜反射镜转台的热-结构耦合分析及验证[J]. Editorial Office of Optics and Precision Engineeri, 2016,24(8):1956-1964.
Ai-hong SHANGGUAN, Chen-jie WANG, Hao-su ZHANG, et al. Thermal-structural coupled analysis and verification of 2-D mirror gimbal for lunar-based telescope[J]. Optics and precision engineering, 2016, 24(8): 1956-1964.
上官爱红, 王晨洁, 张昊苏, 等. 月基望远镜反射镜转台的热-结构耦合分析及验证[J]. Editorial Office of Optics and Precision Engineeri, 2016,24(8):1956-1964. DOI: 10.3788/OPE.20162408.1956.
Ai-hong SHANGGUAN, Chen-jie WANG, Hao-su ZHANG, et al. Thermal-structural coupled analysis and verification of 2-D mirror gimbal for lunar-based telescope[J]. Optics and precision engineering, 2016, 24(8): 1956-1964. DOI: 10.3788/OPE.20162408.1956.
为了提高月基望远镜反射镜转台的工作性能,对反射镜转台进行了热-结构耦合分析以及试验验证和在轨验证。根据输入条件、热载荷、热边界等建立有限元模型对反射镜转台结构及主要发热部件进行了温度场计算。将温度载荷,预紧力载荷,边界条件输入结构有限元模型进行了热-结构耦合分析,得到了半封闭U型结构、高精密运动轴系、蜗轮蜗杆热变形和热应力。推导了轴系摩擦力矩的计算公式,将分析计算中的数据代入公式中获得了轴系的摩擦力矩,并根据摩擦力矩选取了合适力矩的电机。计算结果显示,左轴系在低温工况-25℃下摩擦力矩较大,达14.163 N·mm;高温工况下摩擦力矩较小,55℃时为4.796 N·mm。垂直轴轴系在低温工况-25 ℃时摩擦力矩为16.45 N·mm;高温工况下由于轴系卸载,摩擦力矩为零。结果表明反射镜转台可以在-25 ℃~+55 ℃下正常工作。文中还通过试验验证和在轨验证证明了反射镜转台热-结构耦合分析的有效性和合理性。
To improve the work performance of a 2-D mirror gimbal for the lunar-based telescope
the thermal-structural coupled analysis was carried out
and the analysis results were verified by thermal and onboard tests. According to the given input conditions
thermal loads and the thermal boundary
the finite element model was established to calculate the temperature fields of the mirror gimbal and main heating components. Through inputting the temperature loads
preloads and the boundary conditions into the finite element model
the thermal deformation and stress of the U-shape structure
precision moving shafting systems and the worm gears were obtained. Then
the expressions of friction moment were derived
and analytical data were used to the expressions to achieve the friction moment of shafting systems. On the basis of the friction moment
a proper moment motor was chosen. After calculation
the results show that the left shafting system has a larger friction moment at the low temperature condition of -25 ℃
and the maximal one is up to 14.163 N·mm; While the friction moment is smaller under high temperature condition 55 ℃
and the maximal one is 4.796 N·mm. The results also show friction moment of the azimuth shafting systems at a low temperature condition of -25 ℃ is 16.45 N·mm. Moreover
the vertical shaft system shows its friction moment to be 16.45 N·mm at the low temperature condition of -25 ℃
while it is zero at the high temperature condition because of shafting system unloading. The results indicate the reflection mirror gimbal works well between -25 ℃ to 55 ℃. Finally
the thermal and onboard tests were carried out to demonstrate the rationality and validity of the analysis results.
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上官爱红, 穆猷, 李治国, 等. 空间环境对MoS2固体润滑运动部件寿命的影响[J]. 光学 精密工程, 2014, 22(12): 3264-3271.
SHANGGUAN A H, MU Y, LI ZH G, et al.. Effect of space environment on working life of solid-lubricated rotating parts [J]. Opt. Precision Eng., 2014, 22(12): 3264-3271. (in Chinese)
上官爱红, 张昊苏, 王晨洁, 等. 空间二维运动机构的热真空准加速寿命试验设计[J]. 吉林大学学报(工学版), 2016, 46(1): 186-192.
SHANGGUAN A H, ZHANG H S, WANG CH J, et al.. Design of thermal vacuum quasi-accelerated life test for space two-axis gimbal [J]. Journal of Jilin University(Engineering and Technology Edition), 2016, 46(1): 186-192. (in Chinese)
陈立恒, 徐抒岩. 高分辨率空间相机电控箱热设计[J]. 光学 精密工程, 2011, 19(1): 69-76.
CHEN L H, XU SH Y. Thermal design of electric cabinet for high-resolution space camera [J]. Opt. Precision Eng., 2011, 19(1): 69-76. (in Chinese)
郭亮, 吴清文, 颜昌翔, 等. 光谱成像仪CCD组件的稳态/瞬态热分析与验证[J]. 光学 精密工程, 2010, 18(11): 2375-2383.
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