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Adaptive precision image stabilization control closed-loop method for space astronomical telescope
Micro/Nano Technology and Fine Mechanics | 更新时间：2024-05-08
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    • Adaptive precision image stabilization control closed-loop method for space astronomical telescope

    • “科技新闻播报：空间天文望远镜领域迎来重大突破。针对低频段视轴扰动补偿问题，专家提出了一种基于主动光学技术的自适应精密稳像闭环控制方法。该方法利用精细导星仪作为高精度视轴扰动检测器，结合四点支撑压电驱动大口径快摆镜机构进行扰动补偿。通过精密稳像闭环控制，该方法能准确计算出补偿视轴扰动所需的摆动角度，并转换为各支撑点压电陶瓷执行器的伸缩量。同时，采用基于广义Bouc-Wen逆模型的压电动态迟滞前馈补偿方法，实现高精度定位控制。此外，该方法还利用具有自学习和自适应能力的单神经元对PID控制器参数进行调优，确保最优控制效果。实验表明，该方法能有效补偿空间天文望远镜的视轴偏差，将精细导星仪X和Y方向星点质心位置偏差功率谱密度在0~6 Hz频段内积分值分别抑制了98.54%和98.62%。这一成果为空间天文望远镜的精确观测提供了有力支持，标志着空间光学控制技术的又一重要进步。”
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    • Optics and Precision Engineering   Vol. 32, Issue 8, Pages: 1153-1163(2024)

    • DOI：10.37188/OPE.20243208.1153    

      CLC： P111.2

    • Published：25 April 2024，

      Received：28 July 2023，

      Revised：22 September 2023，

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  • ZHANG Quan,WEI Chuanxin,GAO Yuanpeng,et al.Adaptive precision image stabilization control closed-loop method for space astronomical telescope[J].Optics and Precision Engineering,2024,32(08):1153-1163. DOI： 10.37188/OPE.20243208.1153.

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