The invention discloses an input-limited finite time attitude cooperative tracking fault-tolerant control method, and belongs to the technical field of multi-spacecraft formation flight. In order to reduce communication paths and avoid resource waste, a communication topological structure which has less communication traffic, comprises a directed spanning tree taking a navigator as a root node andonly has a part of followers capable of obtaining navigator information is adopted among spacecraft formation members. In order to enable a following spacecraft which cannot obtain pilot informationto obtain reference information, a distributed finite time state observer is designed to observe the pilot information. Considering communication bandwidth limitation, actuator fault and saturation, system uncertainty and external interference, based on a finite time algorithm, a redundant fault-tolerant algorithm, an adaptive algorithm and a saturation function, a finite time attitude cooperativetracking fault-tolerant control strategy is perfected, and the robustness and practicability of the control system are further improved.

    本发明公开了一种输入受限的有限时间姿态协同跟踪容错控制方法,属于多航天器编队飞行技术领域;为减少通信路径和避免资源浪费,航天器编队成员之间采用通信量较少的包括一个领航者为根节点的有向生成树且仅有部分跟随者可以获得领航者信息的通信拓扑结构。为了使无法获得领航者信息的跟随航天器获得参考信息,设计分布式有限时间状态观测器对领航者信息进行观测。考虑通信带宽受限、执行机构故障与饱和、系统不确定性以及外界干扰,基于有限时间算法、冗余容错算法、自适应算法以及饱和函数,本发明完善了有限时间姿态协同跟踪容错控制策略,进一步提高了控制系统的鲁棒性和实用性。


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    Title :

    Input-limited finite time attitude cooperative tracking fault-tolerant control method


    Additional title:

    一种输入受限的有限时间姿态协同跟踪容错控制方法


    Contributors:
    ZHU ZHIHAO (author) / GAO ZHI (author)

    Publication date :

    2021-02-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen




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