基于ADP的轨道跟踪控制器,用于在未知小行星周围飞行的深空探测器
概括
这项研究提出了一种新的自适应动态编程方法,用于深空探测器轨道跟踪在未知的小行星周围. 该方法确保稳定的控制,尽管不可预测的动态,通过模拟验证.
科学领域:
- 航空航天工程 航空航天工程
- 控制理论 控制理论
- 机器人技术 机器人技术 机器人技术
背景情况:
- 深空任务需要精确的轨道跟踪探测器靠近天体.
- 未知的小行星动态对传统的控制系统构成重大挑战.
- 现有的方法通常依赖于准确的模型,而这些模型在深空探索中是不可用的.
研究的目的:
- 开发一个强大的轨道跟踪控制策略,用于深空探测器周围的小行星与未知的动态.
- 使用自适应动态编程设计基于模型的最佳控制器和无模型的次优控制器.
- 通过数值模拟来确保非对称稳定性和验证拟议的控制方法.
主要方法:
- 建立一个相对运动轨道跟踪控制模型.
- 基于模型的最佳控制器的设计,具有经过验证的非对称稳定性.
- 适应式动态编程 (ADP) 算法的应用,基于对无模型控制器的策略代.
- 在线数据收集用于构建和解决用于控制器参数识别的高阶线性方程.
主要成果:
- 一个基于模型的控制器,证明了闭环系统的非对称稳定性.
- 一个使用ADP推导的无模型次优控制器,该控制器近似于基于模型的控制器.
- 通过数值模拟成功验证控制方法的有效性和性能.
- 证明了在轨道跟踪中处理完全未知的动态的能力.
结论:
- 拟议的自适应动态编程方法为深空探测器在未知的动态下轨道跟踪提供了有效的解决方案.
- 基于模型和无模型的控制策略的组合提供了稳定性和适应性.
- 该方法被验证为未来需要精确轨迹控制的深空探索任务的可靠工具.
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