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首页> 外文期刊>Journal of guidance, control, and dynamics >Adaptive Fault-Tolerant Control of Spacecraft Attitude Dynamics with Actuator Failures
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Adaptive Fault-Tolerant Control of Spacecraft Attitude Dynamics with Actuator Failures

机译：具有执行器故障的航天器姿态动力学的自适应容错控制

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摘要

Two kinds of spacecraft actuator failures are considered: a gain fault, and a deviation fault. An adaptive fault-tolerant control method is proposed for the spacecraft experiencing these actuator failures. The fault-tolerant control in this Note relies on an ideal reference model to identify when a fault occurs. The control tracks the ideal reference model to replicate it as closely as possible. This control employs adaptive parameters to improve the responsiveness of the angular velocity error and the quaternion error due to actuator faults. Moreover, the angular velocity error magnitude is more sensitive than the quaternion error to an actuator fault. This sensitivity can be exploited in the control design by more aggressively tracking the angular velocity of the ideal system relative to the quaternion error. This is achieved by introducing time-dependent parameters that weight the components of the feedback control. In the case of a gain fault (and stuck fault), the stability is proved by a Lyapunov function. This adaptive control has been shown to significantly improve the performance over a conventional control in the presence of these actuator faults.
机译：考虑了两种航天器执行器故障：增益故障和偏差故障。提出了一种针对执行器故障的航天器的自适应容错控制方法。本说明中的容错控制依赖于理想的参考模型来识别何时发生故障。控件会跟踪理想参考模型以尽可能地复制它。该控制采用自适应参数来改善由于执行器故障而引起的角速度误差和四元数误差的响应度。而且，角速度误差幅度比四元数误差对致动器故障更敏感。通过更积极地跟踪理想系统相对于四元数误差的角速度，可以在控制设计中利用这种灵敏度。这可以通过引入与时间有关的参数来实现，这些参数对反馈控制的各个组件进行加权。在增益故障（和卡住故障）的情况下，稳定性由Lyapunov函数证明。在存在这些致动器故障的情况下，这种自适应控制已显示出比常规控制明显改善的性能。

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  • 来源
    《Journal of guidance, control, and dynamics》 |2015年第10期|2033-2042|共10页
  • 作者

    Yu Han; James D. Biggs; Naigang Cui;

  • 作者单位

    Harbin Institute of Technology, 150001 Harbin, People's Republic of China,School of Astronautics, Mailbox 345, Heilongjiang;

    University of Strathclyde, Glasgow, Scotland G1 1XJ, United Kingdom,Advanced Space Concepts Laboratory, Department of Mechanical and Aerospace Engineering;

    Harbin Institute of Technology, 150001 Harbin, People's Republic of China,School of Astronautics, Mailbox 345, Heilongjiang;

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