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Shape Estimation of Gossamer Structures Using Distributed Sun-Angle Measurements

机译：游丝结构形状的分布式太阳角度测量

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摘要

This paper proposes a novel approach to monitor the shape of gossamer structures, such as solar sails, using sun-angle measurements obtained directly on the sail membrane. These measurements can be easily provided by already installed thin-film solar arrays or dedicated low-impact sensors. A general nonlinear least-squares formulation is first presented, and then it is reduced to a linear least-squares problem for large sails. A rank deficiency is observed in the estimation method, but it is avoided by considering measurements at multiple epochs, reconstructing a time-averaged shape. Multiparticle models of the Japan Aerospace Exploration Agency's IKAROS and solar power sail are used to evaluate the performance of the method. The method provides accurate shape estimation with errors of 0.1-0.5 m. Including additional sensors in critical locations can help reduce the error when a low number of sensors is used. In addition, the forces and torques generated by solar radiation pressure are computed and compared with the multiparticle model data. The presented results suggest that the proposed method can easily provide continuous shape estimation of gossamer structures such as solar sails.
机译：本文提出了一种新颖的方法，可以使用直接在帆膜上获得的太阳角测量值来监测诸如太阳帆之类的游丝结构的形状。这些测量可以通过已安装的薄膜太阳能电池阵列或专用的低冲击传感器轻松提供。首先提出了一种一般的非线性最小二乘公式，然后将其简化为大帆的线性最小二乘问题。在估计方法中观察到秩不足，但是通过考虑多个历元的测量并重建时间平均形状可以避免这种情况。日本宇航局IKAROS的多粒子模型和太阳能帆用于评估该方法的性能。该方法提供了精确的形状估计，误差为0.1-0.5 m。当使用少量传感器时，在关键位置包括其他传感器可以帮助减少错误。另外，计算由太阳辐射压力产生的力和扭矩，并将其与多粒子模型数据进行比较。提出的结果表明，所提出的方法可以轻松地提供诸如太阳帆之类的游丝结构的连续形状估计。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2018年第2期|415-426|共12页
  • 作者

    Boden Ralf C.; Hernando-Ayuso Javier;

  • 作者单位

    Univ Tokyo, Grad Sch Engn, Dept Aeronaut & Astronaut, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan;

    Univ Tokyo, Grad Sch Engn, Dept Aeronaut & Astronaut, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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