| 引用本文: | 邱雪松,李卓,商阔,乔国勇.含间隙铰可展太阳翼末端重复展开精度分析[J].哈尔滨工业大学学报,2020,52(7):68.DOI:10.11918/201908150 |
| QIU Xuesong,LI Zhuo,SHANG Kuo,QIAO Guoyong.Precision analysis of repeated expansion of solar wing end with clearance hinge[J].Journal of Harbin Institute of Technology,2020,52(7):68.DOI:10.11918/201908150 |
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| 摘要: |
| 为提高太阳帆板重复展开定位精度,研制了太阳帆板重复可展机构. 可展机构采用绳系内错式传动原理实现二级帆板的同步重复展开功能,采用水平和铅垂两种布置方式适应太阳帆板的不同展开工况. 基于工程实际,引入铰链间隙以及帆板柔性两因素,建立可展太阳帆板的动力学模型,并进行仿真及数值分析. 分析结果表明:太阳帆板末端位姿精度随铰链间隙的增大而降低,而柔性则直接导致太阳翼展开时产生误差,但二者耦合作用时,能够补偿间隙对帆板重复展开末端位姿精度的影响. 利用研制的可展机构样机对太阳翼展开性能、重复展开定位精度进行实验测试,实验结果验证了合理设计铰链关节间隙,利用帆板柔性与铰链间隙的耦合作用可补偿帆板重复展开末端位姿误差；在许可误差范围内,合理地匹配两因素,可使铰链间隙值具有较大的可取范围,对提高机构的定位精度有益. |
| 关键词: 重复可展太阳翼 含间隙铰 低重力实验 动态特性 末端姿态分析 |
| DOI：10.11918/201908150 |
| 分类号:TH122 |
| 文献标识码:A |
| 基金项目:国家自然科学基金青年基金(50375834)； 河北省技术创新引导计划项目(18241905D) |
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| Precision analysis of repeated expansion of solar wing end with clearance hinge |
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QIU Xuesong,LI Zhuo,SHANG Kuo,QIAO Guoyong
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(School of Mechanical Engineering, Yanshan University,Qinhuangdao 066004, Hebei, China)
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| Abstract: |
| To improve the accuracy of repeated deployment and positioning of solar panel, a solar panel repeatable expandable mechanism was developed. The expandable mechanism adopts the principle of internal staggered transmission of tether to realize the synchronous and repeated deployment function of the secondary windsurfing board, and adopts two horizontal and vertical arrangements to adapt to different deployment conditions of the solar windsurfing board. Based on engineering reality, two factors, hinge gap and windsurfing flexibility, were introduced to establish a dynamic model of expandable solar windsurfing, and simulation and numerical analysis were performed. The analysis results show that the accuracy of the terminal pose of solar sails decreases with the increase of hinge clearance, while the flexibility directly leads to the error in the expansion of solar sails. However, when the two are coupled, the effect of clearance on the accuracy of terminal pose can be compensated. The developed prototype of the expandable mechanism was used to test the solar wing deployment performance and the accuracy of repeated deployment positioning. The experimental results verified rational design of the hinge joint clearance, and the coupling effect of the flexibility of windsurfing and hinge clearance can compensate for the windsurfing repeatedly deployed end position error. Reasonably matching the two factors within the allowable error range can make the hinge gap value have a larger desirable range, which is beneficial for improving the positioning accuracy of the mechanism. |
| Key words: repeatable solar wings joint with clearance low gravity experiment dynamic property terminal attitude analysis |
