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Wavefront correction of optical beam for large space mirrors using robust control techniques

机译：使用鲁棒控制技术的大空间反射镜光束的波前校正

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摘要

For an imaging spacecraft to provide higher resolution imaging capability, the satellite will require larger mirrors. Because of the weight and launch constraints for space-based optics systems, the mirrors will have to be segmented and light-weight, resulting in increased flexibility and lower structural frequencies. Consequently, achieving surface accuracy requirements for high resolution imaging with these large aperture light-weight mirrors become a challenging task. This paper investigates the use of adaptive optics for wavefront sensing and surface control of large segmented mirrors. An H∞ robust control technique is considered for the control of the adaptive optics system with the reduced number of inputs and outputs using singular value decomposition and Zernike polynomials. The robust controller design with the reduced model is validated with a computer simulation for a full plant in the presence of disturbances.
机译：为了使成像航天器提供更高的分辨率成像能力，卫星将需要更大的镜子。由于天基光学系统的重量和发射限制，后视镜必须分段且重量轻，从而增加了灵活性并降低了结构频率。因此，利用这些大口径轻型反射镜实现高分辨率成像的表面精度要求成为一项艰巨的任务。本文研究了自适应光学器件在大分段镜的波前传感和表面控制中的应用。在奇异值分解和Zernike多项式的情况下，考虑使用H∞鲁棒控制技术来控制输入和输出数量减少的自适应光学系统。具有简化模型的鲁棒控制器设计已通过计算机模拟在存在干扰的情况下对整个工厂进行了验证。

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  • 来源
    《Acta astronautica》 |2011年第2期|p.141-148|共8页
  • 作者

    Jae Jun Kim; Daniel C. Burtz; Brij N. Agrawal;

  • 作者单位

    Department of Mechanical and Astronautical Engineering, Naval Postgraduate School, Monterey, CA 93943, United States;

    rnDepartment of Mechanical and Astronautical Engineering, Naval Postgraduate School, Monterey, CA 93943, United States;

    rnDepartment of Mechanical and Astronautical Engineering, Naval Postgraduate School, Monterey, CA 93943, United States;

  • 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
  • 中图分类
  • 关键词

    adaptive optics; segmented mirror telescope; robust control;

    机译：自适应光学分段镜望远镜;鲁棒控制;

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