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<p>In this paper, a novel framework for fault-tolerant control with fixed-time convergence based on the high order fully actuated system model is proposed to solve the problem of consensus control of spacecraft formation flight systems in the context of model uncertainties, external disturbances and actuator faults. In the upper layer of the framework, two distinct types of fixed-time observers are constructed to eliminate all unknown information within the system’s dynamics. In the lower layer of the framework, innovative paradigm controllers are meticulously developed in accordance with the fully actuated system model, which aims to achieve fixed-time consensus with remarkable precision and efficiency. It exhibits better attitude tracking performance compared to backstepping control based on the first-order state-space model as well as asymptotic stable control based on the high order fully actuated system model. Finally, the effectiveness of the method is demonstrated by numerical simulations.</p>

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Fixed-time fault-tolerant attitude consensus control for multiple spacecraft via fully actuated system approaches

  • 期刊论文

  • 发表日期：

    2025年7月15日

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  • Zeyu Zhang,
  • Jinbao Chen,
  • Chuanzhi Chen,
  • Guang Zheng,
  • Zhicheng Song,
  • Yuanlong Chen

摘要

In this paper, a novel framework for fault-tolerant control with fixed-time convergence based on the high order fully actuated system model is proposed to solve the problem of consensus control of spacecraft formation flight systems in the context of model uncertainties, external disturbances and actuator faults. In the upper layer of the framework, two distinct types of fixed-time observers are constructed to eliminate all unknown information within the system’s dynamics. In the lower layer of the framework, innovative paradigm controllers are meticulously developed in accordance with the fully actuated system model, which aims to achieve fixed-time consensus with remarkable precision and efficiency. It exhibits better attitude tracking performance compared to backstepping control based on the first-order state-space model as well as asymptotic stable control based on the high order fully actuated system model. Finally, the effectiveness of the method is demonstrated by numerical simulations.