| 大型索网式可展开天线在轨高精度指向控制 |
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| 引用本文： | 邬树楠,刘丽坤,汪锐,吴志刚. 大型索网式可展开天线在轨高精度指向控制[J]. 宇航学报, 2015, 36(10): 1140-1147. DOI: 10.3873/j.issn.1000-1328.2015.10.007 |
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| 作者姓名： | 邬树楠 刘丽坤 汪锐 吴志刚 |
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| 作者单位： | 1. 大连理工大学工业装备结构分析国家重点实验室，大连116024；2. 大连理工大学航空航天学院，大连116024；3. 中国空间技术研究院，北京100094 |
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| 摘 要： | 以星载大型索网式可展开天线为对象，研究在轨工作过程中天线视轴高精度高稳定度指向控制方法。首先，基于Craig-Bampton法建立表征天线指向的动力学模型；然后针对天线振动对视轴指向的影响，设计PD反馈+陷波滤波器的控制算法；进一步分析影响指向精度的因素，设计带有调节滤波器的改进控制器以减小天线视轴指向的周期性误差，提高指向精度与稳定度。最后，给出数值仿真校验的结果并与现有的方法进行比较。结果表明，所提出的控制算法在保证天线指向稳定的同时，可以有效减小天线视轴的指向偏差，并对干扰与振动具有良好的鲁棒性。
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| 关 键 词： | 指向控制 大型索网天线 挠性航天器 姿态控制 空间结构 |
| 收稿时间： | 2014-11-18 |
#br#On Orbit High Accuracy Pointing Control for Large Mesh Deployable Antenna |
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| WU Shu nan,LIU Li kun,WANG Rui,WU Zhi gang. #br#On Orbit High Accuracy Pointing Control for Large Mesh Deployable Antenna[J]. Journal of Astronautics, 2015, 36(10): 1140-1147. DOI: 10.3873/j.issn.1000-1328.2015.10.007 |
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| Authors: | WU Shu nan LIU Li kun WANG Rui WU Zhi gang |
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| Affiliation: | 1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China； 2. School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, China；3. China Academy of Space Technology, Beijing 100094, China |
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| Abstract: | Taking the large mesh deployable antenna (LMDA) as an object, the high accuracy and stability pointing control for LMDA optical axis is studied. The dynamics model for the LMDA pointing is firstly presented based-on the Craig-Bampton method. The PD feedback and notch filter are designed to suppress the vibration of the LMDA. Furthermore, the factors affecting LDMA pointing are discussed, and a modified controller with a regulation filter is proposed to reduce the periodic errors, and then improve the pointing accuracy and stability. Numerical simulations are finally provided and compared with present methods. The results demonstrate that the proposed control algorithm can guarantee the stability of LMDA pointing, reduce pointing errors and have better robustness to disturbances and vibration. |
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| Keywords: | Pointing control Large mesh antenna Flexible spacecraft Attitude control Space structure |
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