| 极端温度下含隙铰柔性帆板展开位置精度分析 |
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| 引用本文： | 邱雪松,商阔,丁锡浩,任志博.极端温度下含隙铰柔性帆板展开位置精度分析[J].宇航学报,2021,42(3):314-323. |
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| 作者姓名： | 邱雪松 商阔 丁锡浩 任志博 |
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| 作者单位： | 燕山大学机械工程学院，秦皇岛 066004 |
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| 基金项目： | 国家自然科学基金青年基金（51305384）；河北省技术创新引导计划项目（18241905D） |
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| 摘 要： | 以自主研发的月球车重复可展帆板为研究对象，分析月表极端温度对其展开末端位置可靠性的影响。构建极端温度与帆板材料、铰链结构间的关系函数，基于运动弹性动力学，建立极端温度下可展帆板间隙-柔性耦合动力学模型。以帆板展开末端位置误差为评价指标，将BP神经网络算法与一次二阶矩法相结合，利用应 力- 强度理论建立帆板展开末端位置可靠性模型，通过算例分析对比不同极端温度下的可靠性指标。用经典MC法计算进行对比验证，确定神经网络方法的可行性、高效性。结果表明，极端温度条件下，铰间隙对于位置可靠性的影响显著，温度区间在-30 ℃~20 ℃时，机构展开末端位置可靠性最优。
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| 收稿时间： | 2020-06-24 |
Precision Analysis of Deployable Position of Flexible
Solar Array withGap Hinges at Extreme Temperature |
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| QIU Xue song,SHANG Kuo,DING Xi hao,REN Zhi bo.Precision Analysis of Deployable Position of Flexible
Solar Array withGap Hinges at Extreme Temperature[J].Journal of Astronautics,2021,42(3):314-323. |
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| Authors: | QIU Xue song SHANG Kuo DING Xi hao REN Zhi bo |
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| Affiliation: | School of Mechanical Engineering, Yanshan University,
Qinhuangdao 066004, China |
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| Abstract: | Taking the independently developed
repeatedly deployable solar array of lunar rover as the research object, the
influence of the extreme temperature of the lunar surface on the reliability of
the end position of the deployed solar array is analyzed. The relationship
function between the extreme temperature and solar array materials and hinge
structure is constructed. Based on the kinetic elastic
dynamics, the gap flexible coupling dynamic model under
extreme temperature is established. Taking the end position error of the solar
array as the evaluation index, combining the BP neural network algorithm with
the first order second moment
method, the stress strength theory is used to establish
the reliability model of the end position of the solar array. The calculation
of the classical MC method is compared and verified to determine the
feasibility and efficiency of the neural network method. The results show that
under the extreme temperature conditions, the hinge clearance has a significant
effect on the position reliability. Within the temperature range of -30-20 ℃, the reliability of the end position of the deployed mechanism is
optimal. |
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