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|本期目录/Table of Contents|

欠驱动航天器姿态机动时间-能量最优控制研究

《应用力学学报》[ISSN:1000-4939/CN:61-1112/O3]

期数:
2019年02期
页码:
349-355
栏目:
出版日期:
2018-12-18

文章信息/Info

Title:
Study on time-energy optimal control for attitude maneuver of underactuated spacecraft
作者:
石青鑫戈新生
北京信息科技大学 机电工程学院 100192 北京
Author(s):
Shi Qingxin Ge Xinsheng
School of Mechanical and Electrical Engineering, Beijing Information Science & Technology University, 100192, Beijing, China
关键词:
Chebyshev-Gauss伪谱法欠驱动航天器姿态机动时间最优时间-能量最优控制
分类号:
V412.4+2
DOI:
10.11776/cjam.36.02.D007
文献标识码:
A
摘要:
针对由动量飞轮作为执行机构的欠驱动航天器,研究以飞轮角加速度作为控制输入的航天器大角度姿态机动问题。利用四元数描述欠驱动航天器的姿态运动学模型,分别以时间最优控制、时间-能量最优控制作为目标函数进行了基于Chebyshev-Gauss(CG)伪谱法的优化设计和讨论。采用 Clenshaw-Curtis积分近似得到了性能指标函数中的积分项,应用重心拉格朗日插值逼近状态变量和控制变量,将连续最优控制问题进行离散,转变为一个非线性规划(NLP)的问题,NLP问题则可应用序列二次规划方法计算。两种目标函数优化的结果均使系统从初始姿态机动到终端姿态,终端角速度也都达到了预定值,对比发现时间-能量最优结果的能耗值比时间最优的能耗值小,但其机动耗时较长。

参考文献/References

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