Spacecraft attitude slew maneuver control via backstepping method
-
摘要: 采用退步控制方法设计航天器姿态倾斜机动控制律.中间控制律采用了微分方程的形式,避免了传统退步控制方法中,对中间控制律进行的解析求导.在此基础上,采用了2种方法通过推迟控制力矩峰值出现的时间来减低对执行机构输出控制力矩最大值的要求: ①改变中间控制律的积分初值;②采用跟踪性能相对较差的角速度控制律.尽管第2种方法的控制律的稳定性取决于控制器的参数,但可明确限定控制力矩的最大值.仿真结果证实了所提出控制律的有效性.Abstract: The backstepping control method was applied to the slew maneuver of the rigid spacecraft. In order to avoid the complicated calculation of the derivation of the intermediate control law which is required in the conventional backstepping method, the intermediate control law presents in a form of differential equation. On this basis, two methods were applied to reduce the requirement in the max actuator output torque by means of postponing the peak of the control torque. One method is to change the initialization of the intermediate control law. The other is to utilize a worse angular velocity tracking law. The system stability with the second control law depends on the parameters of the controller, however, the max control torque can be accurately restricted. Simulation results illuminate the availability of the derived control laws.
-
Key words:
- backstepping method /
- attitude control /
- slew maneuver
-
[1] Wie B, Bailey D, Heiberg C. Rapid multi-target acquisition and pointing control of agile spacecraft . AIAA-2000-4546, 2000 [2] Lappas V J, Steyn W H, Underwood C I. Practical results on the development of a control moment gyro based attitude control system for agile small satellites The Sixteenth Annual AIAA/USU Conference on Small Satellites. Logan, Utah: , 2002:12-15 [3] 汤亮,徐世杰.采用单框架控制力矩陀螺群的卫星侧摆机动控制研究[J].航天控制,2003,2: 1-5,13 Tang Liang, Xu Shijie. Skew maneuver control for satellites using SGCMG systems[J]. Aerospace Control, 2003,2: 1-5,13(in Chinese) [4] 徐世杰. 基于Lyapunov方法的空间飞行器大角度姿态机动控制[J]. 宇航学报, 2001,22(4):95-99 Xu Shijie. Large angle attitude maneuver control of spacecraft based on Lyapunov approach[J].Journal of Astronautics, 2001,22(4):95-99(in Chinese) [5] Kim K, Kim Y. Backstepping control of rigid spacecraft slew maneuver . AIAA-2001-4210, 2001 [6] Kim K, Kim Y. Robust backstepping control for slew maneuver using nonlinear tracking function IEEE Transactions on Control Systems Technology, 2003,11(6):822-829 [7] 肖业伦. 航空航天器运动的建模——飞行动力学的理论基础[M]. 北京:北京航空航天大学出版社,2003:128-138 Xiao Yelun. Modeling of aerostat and spacecraft: theories foundation of flight dynamics[M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2003: 128-138 (in Chinese) [8] Hull R A, Ham C, Johnson R W. Systematic design of attitude control systems for a satellite in a circular orbit with guaranteed performance and stability Advanced Subsystems & Components, 2000:1-10
点击查看大图
计量
- 文章访问数: 3217
- HTML全文浏览量: 52
- PDF下载量: 833
- 被引次数: 0