南京航空航天大学航天学院,南京 211106
郁丰,男,研究员,博士生导师,E-mail:yufeng@nuaa.edu.cn。
收稿:2025-03-05,
修回:2025-07-24,
纸质出版:2026-04-28
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张隆,郁丰. 基于模态辨识与PSO优化的挠性航天器模糊自适应控制[J]. 南京航空航天大学学报(自然科学版),2026,58(2):441⁃448.
ZHANG Long, YU Feng. Fuzzy adaptive control of flexible spacecraft based on modal identification and PSO optimization[J]. Journal of Nanjing University of Aeronautics & Astronautics(Natural Science Edition),2026, 58(2):441⁃448.
张隆,郁丰. 基于模态辨识与PSO优化的挠性航天器模糊自适应控制[J]. 南京航空航天大学学报(自然科学版),2026,58(2):441⁃448. DOI: 10.16356/j.2097-6771.2026.02.020.
ZHANG Long, YU Feng. Fuzzy adaptive control of flexible spacecraft based on modal identification and PSO optimization[J]. Journal of Nanjing University of Aeronautics & Astronautics(Natural Science Edition),2026, 58(2):441⁃448. DOI: 10.16356/j.2097-6771.2026.02.020.
大型挠性航天器所携带的挠性附件在空间环境中容易产生低频振动,通过结构耦合对航天器姿态稳定性产生影响。本文提出将加速度信号映射至模态空间进行模态辨识的方法,并使用基于辨识结果与粒子群优化(Particle swarm optimization ,PSO)的模糊自适应控制方法用于低频挠性航天器的振动抑制。最后,通过仿真实验表明,所提辨识方法可有效降低模态混叠给辨识带来的影响,辨识误差均在2%以内;控制方法能够大幅削减模态振动,第一阶模态振动幅度衰减达70%,第二阶模态振动幅度衰减达50%,且系统调节的响应速度提升65%。
Flexible appendages carried by large flexible spacecraft are prone to low-frequency vibrations in the space environment, which affect attitude stability through structural coupling. This paper proposes a modal identification method by mapping acceleration signals into the modal space. Furthermore, a fuzzy adaptive control approach, integrating the identification results with particle swarm optimization (PSO), is employed for low-frequency vibration suppression in flexible spacecraft. Simulation results demonstrate that the proposed identification method effectively reduces the impact of mode aliasing on identification, with all identification errors remaining below 2%. The control method significantly attenuates modal vibrations, achieving reductions of up to 70% in the first-mode vibration amplitude and 50% in the second-mode vibration amplitude. Moreover, a 65% improvement in system response speed is achieved.
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