This research investigates an integrated predictor–observer feedback control strategy for the vibration suppression of large-scale spacecraft affected by unbounded input time-delay effect. The vibration model incorporates orbit-attitude coupling effects, with lumped disturbance introduced to address nonlinearities. Resulted from large-scale characteristics, the unbounded input time-delay is considered during the dynamic response process. Accordingly, for the infinite property of delay effect in time domain, a universal integrated predictor–observer feedback control scheme is developed to achieve asymptotic stabilization of closed-loop system via Lyapunov theory. Notably, the state, disturbance and intermediate observers are analyzed subject to unbounded time-delay respectively to estimate both states and disturbance simultaneously, in contrast to the availability or ignorance assumption directly in existing literature. Then, a predictor is introduced to compensate for the time-delay and prevent adverse performance impacts. Furthermore, numerical simulations of the spacecraft's vibration dynamics are performed to validate the effectiveness of proposed control strategy.


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    Title :

    Integrated Predictor–Observer Feedback Control for Vibration Mitigation of Large-Scale Spacecraft With Unbounded Input Time Delay


    Contributors:
    Lyu, Bailiang (author) / Liu, Chuang (author) / Yue, Xiaokui (author)


    Publication date :

    2025-04-01


    Size :

    2010406 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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