敏捷卫星固定时间三轴同步姿态控制器设计

doi:10.12305/j.issn.1001-506X.2026.07.28

摘要/Abstract

摘要：

针对存在干扰和不确定性的敏捷卫星高精度固定时间三轴同步姿态控制问题，提出一种基于固定时间同步理论的鲁棒姿态控制方法。该方法可保证敏捷卫星三轴期望姿态在固定时间内一致同步收敛，且姿态收敛轨迹呈直线的特性可避免姿态抖动，减少不必要的控制量消耗；同时，最大稳定时间不受初值的影响，具备更强的适应性。此外，设计了有限时间干扰观测器对姿态控制系统中存在的干扰和不确定性进行补偿。对所提方法进行数学仿真，证明了所提方法提高了系统的鲁棒性，并基于Lyapunov稳定性理论证明了闭环系统的稳定性。

关键词: 敏捷卫星, 固定时间同步控制, 三轴姿态控制, 干扰观测器

Abstract:

Aiming at the problem of high-precision fixed-time three-axis synchronous attitude control of agile satellite with disturbance and uncertainty, a robust attitude control method based on fixed-time-synchronized theory is proposed. This method can ensure that the three-axis desired attitude of agile satellite converges uniformly and synchronously in fixed time, and the linear character of the attitude convergence trajectory can avoid attitude jitter and reduce unnecessary control consumption. At the same time, the maximum stabilization time is unaffected by the initial value, so it has stronger adaptability. In addition, a finite-time disturbance observer is designed to compensate the disturbance and uncertainty existing in the attitude control system. The mathematical simulation is conducted on the proposed method. It can be proved that the proposed method improves the robustness of the system, and the stability of the closed-loop system is proved based on Lyapunov stability theory.

Key words: agile satellite, fixed-time synchronous control, three-axis attitude control, disturbance observer

中图分类号:

V 448.2

赵友雪, 周军, 冯振欣. 敏捷卫星固定时间三轴同步姿态控制器设计[J]. 系统工程与电子技术, 2026, 48(7): 2448-2456.

Youxue ZHAO, Jun ZHOU, Zhenxin FENG. Fixed time three-axis synchronous attitude controller design for agile satellite[J]. Systems Engineering and Electronics, 2026, 48(7): 2448-2456.

图/表 8

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参数	值
${k_{{\text{o1}}}}$	0.22
${k_{{\text{o2}}}}$	1
${k_{{\text{o3}}}}$	0.008
${k_{{\text{o4}}}}$	0.5
${a_1}$	0.55
${a_2}$	1.1
${a_3}$	0.64
${a_4}$	1.5
${k_1}$	0.08
${k_2}$	0.08
${k_3}$	0.05
${k_4}$	0.05
${a_{{\text{Fix}}1}}$	0.63
${a_{{\text{Fix}}2}}$	1.1
${a_{{\text{Fix}}3}}$	0.6
${a_{{\text{Fix}}4}}$	1.7
${k_{{\text{Fix}}1}}$	0.06
${k_{{\text{Fix}}2}}$	0.06
${k_{{\text{Fix}}3}}$	0.05
${k_{{\text{Fix}}4}}$	0.05
$ {a_{{\text{F}}1}} $	0.75
$ {a_{{\text{F}}2}} $	0.68
$ {k_{{\text{F}}1}} $	0.09
$ {k_{{\text{F}}2}} $	0.08
$ {k_{{\mathrm{B1}}}} $	0.16
$ {k_{{\mathrm{B2}}}} $	40

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