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首页> 外文期刊>Acta astronautica >Global fixed-time attitude tracking control for the rigid spacecraft with actuator saturation and faults
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Global fixed-time attitude tracking control for the rigid spacecraft with actuator saturation and faults

机译：具有致动器饱和度和故障的刚性航天器的全局固定时间姿态跟踪控制

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摘要

This paper investigates the global finite-time attitude tracking problem for the rigid spacecraft subject to inertial uncertainties, external disturbances, actuator faults, and input saturation constraints. The exponential coordinates vector in conjunction with a hysteretic-based jump condition is introduced to overcome the topological obstacles of global stability on the special orthogonal group. A novel nonsingular fixed-time-based sliding mode is designed, which not only avoids the singularity but also guarantees that the convergence time of tracking errors along the sliding surface is independent of the state value. Then, an adaptive fault-tolerant control law is constructed to enforce the system state to reach a neighborhood of the sliding surface in the sense of the fixed time concept, which can accommodate actuator failures under limited control torque. The total convergence time is independent of the initial conditions information. A rigorous mathematical stability Proof is given. Numerical simulations are finally performed to demonstrate the effectiveness of the proposed finite-time controller.
机译：本文调查了刚性航天器受惯性不确定性，外部干扰，执行器故障和输入饱和约束的全球有限时间态度跟踪问题。引入了指数坐标向量与基于滞后的跳跃条件一起克服了特殊正交组全球稳定性的拓扑障碍。设计了一种新型的非奇形定型时间的滑动模式，其不仅避免了奇点，而且还保证了沿着滑动表面跟踪误差的收敛时间与状态值无关。然后，构造自适应容错控制定律以实施系统状态以在固定时间概念的意义上到达滑动表面的邻域，这可以在有限控制扭矩下容纳致动器故障。总收敛时间与初始条件信息无关。给出了严格的数学稳定性证据。最终执行数值模拟以证明所提出的有限时间控制器的有效性。

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  • 来源
    《Acta astronautica》 |2019年第2期|325-333|共9页
  • 作者

    Shi Xiao-Ning; Zhang Yong-An; Zhou Di; Zhou Zhi-Gang;

  • 作者单位

    Harbin Inst Technol Sch Astronaut Ctr Control Theory & Guidance Technol Harbin 150001 Heilongjiang Peoples R China|Fujian Quanzhou HIT Res Inst Engn & Technol Quanzhou 362000 Peoples R China;

    Harbin Inst Technol Sch Astronaut Ctr Control Theory & Guidance Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Sch Astronaut Ctr Control Theory & Guidance Technol Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Sch Astronaut Ctr Control Theory & Guidance Technol Harbin 150001 Heilongjiang Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Global attitude tracking; Exponential coordinates; Fixed-time control; Adaptive control; Actuator faults and saturation;

    机译：全球态度跟踪;指数坐标;固定时间控制;自适应控制;执行器故障和饱和度;

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