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首页> 外文期刊>Journal of aerospace engineering >Fault Tolerant Attitude Synchronization Control during Formation Flying
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Fault Tolerant Attitude Synchronization Control during Formation Flying

机译：编队飞行中的容错姿态同步控制

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摘要

It is necessary for precise satellite formations to keep each satellite in accurate relative attitude synchronization and to maintain relative angular velocity synchronization. An adaptive fuzzy terminal sliding mode control is proposed for a formation flying tracking system which includes acquisition, tracking, and pointing. The relative attitude of the leader and follower spacecraft under gravity gradient torque and external periodic disturbances is controlled by four reaction wheels. First, a terminal sliding mode controller is used to obtain stable and fast tracking. Then, the adaptive fuzzy logic system is used to approximate and learn the system uncertainty with the online fault and time-varied external disturbances. The system is proved to be stable, and the parameters are proved to be bounded under the control scheme, using a Lyapunov methodology. Finally, simulation results (under actuator faults like wheel failure and wheel degradation) show that the proposed control method has the advantages of high tracking accuracy, low computation load, robustness, and ease of engineering appli cation.
机译：对于精确的卫星编队，必须使每个卫星保持准确的相对姿态同步并保持相对角速度同步。针对包括捕获，跟踪和指向的编队飞行跟踪系统，提出了一种自适应模糊终端滑模控制。在重力梯度转矩和外部周期性扰动下，前导和从动航天器的相对姿态由四个反作用轮控制。首先，使用终端滑模控制器来获得稳定和快速的跟踪。然后，采用自适应模糊逻辑系统对具有在线故障和时变外部干扰的系统不确定性进行近似和学习。使用Lyapunov方法证明系统是稳定的，并且证明参数在控制方案下是有限的。最后，仿真结果（在车轮故障和车轮退化等致动器故障下）表明，该控制方法具有跟踪精度高，计算负荷低，鲁棒性强，易于工程应用的优点。

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