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首页> 外文期刊>Journal of guidance, control, and dynamics >Asteroid Precision Landing via Multiple Sliding Surfaces Guidance Techniques
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Asteroid Precision Landing via Multiple Sliding Surfaces Guidance Techniques

机译：小行星通过多种滑面制导技术精确着陆

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摘要

Autonomous close-proximity operations (hovering, landing) in the low-gravity environment exhibited by asteroids are particularly challenging. A novel nonlinear landing guidance scheme has been developed for spacecraft that are required to execute autonomous closed-loop guidance to a designated point on the asteroid surface. Based on high-order sliding-mode control theory, the proposed multiple sliding surface guidance algorithm has been designed to take advantage of the ability of the system to reach the sliding surface in a finite time. High control activity typical of sliding control design is avoided, resulting in a guidance law that is robust against unmodeled yet bounded perturbations. The proposed multiple sliding surface guidance does not require any off-line trajectory generation, and therefore it is flexible enough to target a large variety of points on the surface without the need of ground-based trajectory analysis. The global stability of the proposed guidance algorithm is proven using a Lyapunov-based approach. The behavior of the multiple sliding surface guidance-based feedback asteroid landing trajectories is investigated via a parametric analysis, and a full set of Monte Carlo simulations in realistic landing scenarios is implemented to evaluate the guidance performance. Based on such results, the multiple sliding surface guidance algorithm is demonstrated to be very accurate and flexible, and it has the potential to be implemented as real-time guidance during asteroid landing and possibly for close-proximity operations.
机译：小行星表现出的低重力环境中的自动近距离操作（悬停，着陆）特别具有挑战性。已经为航天器开发了一种新颖的非线性着陆制导方案，要求该航天器执行对小行星表面上指定点的自主闭环制导。基于高阶滑模控制理论，设计了所提出的多滑面引导算法，以利用系统在有限时间内到达滑面的能力。避免了滑动控制设计所特有的高控制活动，从而产生了对未建模但有界扰动具有鲁棒性的制导律。所提出的多重滑动表面引导不需要任何离线轨迹生成，因此它具有足够的灵活性，可以在不基于地面轨迹分析的情况下瞄准表面上的各种点。使用基于Lyapunov的方法证明了所提出的制导算法的全局稳定性。通过参数分析研究了基于多个滑动面制导的反馈小行星着陆轨迹的行为，并在实际着陆场景中实施了全套蒙特卡洛模拟，以评估制导性能。基于这样的结果，多重滑动表面制导算法被证明是非常准确和灵活的，并且有可能在小行星着陆期间以及可能在近距离操作中作为实时制导实现。

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  • 来源
    《Journal of guidance, control, and dynamics》 |2013年第4期|1075-1092|共18页
  • 作者

    Roberto Furfaro; Dario Cersosimo; Daniel R. Wibben;

  • 作者单位

    Department of Systems and Industrial Engineering University of Arizona, Tucson, Arizona 85721;

    Department of Mechanical and Aerospace Engineering, E1412 Lafferre Hall University of Missouri-Columbia, Columbia, Missouri 65211;

    Department of Systems and Industrial Engineering University of Arizona, Tucson, Arizona 85721;

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  • 正文语种 eng
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  • 入库时间 2022-08-17 13:47:20

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