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<p>In this paper, a time varying barrier Lyapunov function presetting time controller (TVBLFPTC) and an appointed time adaptive sliding mode disturbance observer(ATASMDO) are designed for the flexible spacecraft attitude rapid maneuvering. In this strategy, the ATASMDO is the first time designed to estimate the value of lumped external disturbances and spacecraft system uncertainties. Subsequently, an input learning fault estimator (ILFE) is applied to approximate the nutation and deviation effects in control input. Moreover, to shorten the attitude maneuver time, the TVBLFPTC scheme is designed. Additionally, the adaptive component in this control strategy is designed to eliminate the adverse effects and compensate for the neglected dynamics residuals. Furthermore, the stability of the TVBLFPTC scheme applied on the spacecraft attitude control system has been proved. Finally, numerical simulations are given to varify the effectiveness of the TVBLFPTC strategy with the flexible satellite system.</p>

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Appointed-time sliding mode disturbance observer based adaptive presetting time control for flexible spacecraft attitude rapid maneuvering with input constraints

  • 期刊论文

  • 发表日期：

    2025年5月23日

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  • Junjun Liu,
  • Yufu Cui,
  • Haoping Wang,
  • Yang Tian

摘要

In this paper, a time varying barrier Lyapunov function presetting time controller (TVBLFPTC) and an appointed time adaptive sliding mode disturbance observer(ATASMDO) are designed for the flexible spacecraft attitude rapid maneuvering. In this strategy, the ATASMDO is the first time designed to estimate the value of lumped external disturbances and spacecraft system uncertainties. Subsequently, an input learning fault estimator (ILFE) is applied to approximate the nutation and deviation effects in control input. Moreover, to shorten the attitude maneuver time, the TVBLFPTC scheme is designed. Additionally, the adaptive component in this control strategy is designed to eliminate the adverse effects and compensate for the neglected dynamics residuals. Furthermore, the stability of the TVBLFPTC scheme applied on the spacecraft attitude control system has been proved. Finally, numerical simulations are given to varify the effectiveness of the TVBLFPTC strategy with the flexible satellite system.