Spacecraft detumbling with magnetic torque coils is an inherently underactuated control problem. Contemporary and classical magnetorquer detumbling methods do not adequately consider this underactuation, and suffer from poor performance as a result. These controllers can get stuck on an uncontrollable manifold, resulting in long detumbling times and high power consumption. This work presents a novel detumble controller based on a non-monotonic Lyapunov function that predicts the future magnetic field along the satellite’s orbit and avoids uncontrollable configurations. In comparison to other controllers in the literature, our controller detumbles a satellite in significantly less time while also converging to lower overall angular rates. We provide a derivation and proof of convergence for our controller as well as Monte-Carlo simulation results demonstrating its performance in representative use cases.


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    Title :

    Building a Better B-Dot: Fast Detumbling with Non-Monotonic Lyapunov Functions


    Contributors:


    Publication date :

    2024-03-02


    Size :

    2022316 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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