This paper investigates the coordinated attitude synchronization and tracking problems of multiple rigid-body spacecraft subject to inaccurate inertial parameters. Two adaptive distributed control algorithms are developed based on communications among spacecraft connected through a switching communication network, which allow each switching subgraph to be disconnected. In the first place, by introducing an adaptive strategy for the inertial parameters, a distributed attitude synchronization control algorithm is designed. In particular, a gain selection criteria is specified for the asymptotic attitude synchronization under uniform joint connectivity. In the second place, for the coordinated attitude tracking problem, we first develop a distributed observer for each spacecraft to estimate the reference information associated with a leader over a switching network with uniform joint quasi-strong connectivity. Then, we propose an adaptive tracking scheme such that each spacecraft tracks the estimated information. Finally, numerical examples are given to validate the effectiveness of two proposed adaptive distributed control algorithms.

中文翻译：

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多航天器在具有交换拓扑结构的通信网络上的协调姿态同步和跟踪控制

本文研究了惯性参数不准确下多刚体航天器的协调姿态同步和跟踪问题。基于通过交换通信网络连接的航天器之间的通信，开发了两种自适应分布式控制算法，允许每个交换子图断开连接。首先，通过引入惯性参数自适应策略，设计了分布式姿态同步控制算法。特别是，为均匀联合连接下的渐近姿态同步指定了增益选择标准。其次，对于协调姿态跟踪问题，我们首先为每个航天器开发一个分布式观察器，以通过具有统一联合准强连接的交换网络估计与领导者相关的参考信息。然后，我们提出了一种自适应跟踪方案，以便每个航天器跟踪估计的信息。最后，给出了数值例子来验证所提出的两种自适应分布式控制算法的有效性。