| 引用本文: | 杨思亮,徐世杰.柔性航天器大角度姿态机动的变论域分形控制[J].哈尔滨工业大学学报,2011,43(11):136.DOI:10.11918/j.issn.0367-6234.2011.11.028 |
| YANG Si-liang,XU Shi-jie.Variable universe fractal control of flexible multi-body spacecraft for large angle attitude maneuver[J].Journal of Harbin Institute of Technology,2011,43(11):136.DOI:10.11918/j.issn.0367-6234.2011.11.028 |
|
| 摘要: |
| 针对具有开环树状拓扑结构的柔性多体航天器,基于真-伪坐标形式的拉格朗日方程,建立柔性多体航天器的动力学模型,充分考虑了柔性航天器的时变与不确定性的动力学特征,设计了改进的变论域分形模糊控制器,并对该系统进行了仿真验证.仿真结果表明,该方案回避了实时计算收缩因子所导致的论域范围实时收缩的缺点,实现了对柔性多体航天器大角度姿态机动的有效控制,同时保证了航天器柔性附件振动的有效抑制. |
| 关键词: 航天器制导与控制 柔性多体航天器 大角度姿态机动 变论域 分形控制 |
| DOI：10.11918/j.issn.0367-6234.2011.11.028 |
| 分类号:V448.2 |
| 基金项目:国家自然科学基金资助项目(10872028) |
|
| Variable universe fractal control of flexible multi-body spacecraft for large angle attitude maneuver |
|
YANG Si-liang, XU Shi-jie
|
|
School of Astronautics,Beijing University of Aeronautics and Astronautics,100191 Beijing,China
|
| Abstract: |
| The dynamic model of flexible multi-body spacecraft with topological tree configuration has been established based on the Lagrange’s equations in terms of quasi-coordinates.The kinematics of the spacecraft is described by Modified Rodrigues Parameters(MRPs).For this time-varing uncertainty flexible multi-body spacecraft dynamic system,a modified fractal controller via variable universe of discourse was designed and the numerical simulation was done.The results show that this control scheme avoids the flaw caused by real-time calculating of shrinkable factors,realizes the effective control of flexible multi-body spacecraft for large angle attitude maneuver,and assures the vibration suppression of the spacecraft flexible appendages at the same time. |
| Key words: spacecraft guidance and control flexible multi-body spacecraft large angle attitude maneuver variable universe of discourse fractal control |
