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轨道摄动对航天器角动量管理的影响和补偿

DOI: 10.13195/j.kzyjc.2013.0534, PP. 979-984

Keywords: 角动量管理,轨道摄动,航天器,摄动补偿

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Abstract:

三轴主惯量接近的航天器长期在轨采用惯性系的角动量管理,使用垂直于轨道面的某一主惯性轴为??轴,建立参考的惯性系进行控制器设计,轨道摄动使轨道长周期项与时间呈近似线性关系,导致控制器输出线性累加.针对此问题,分析轨道摄动导致控制律失效的原因,参考内模原理扩维方程,重新设计最优控制方法进行惯性系的角动量管理.通过半物理仿真表明了摄动补偿方法的可行性,且角动量和姿态长期稳定性均优于补偿前.

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