Building a Better B-Dot: Fast Detumbling with Non-Monotonic Lyapunov Functions
<|reference_start|>Building a Better B-Dot: Fast Detumbling with Non-Monotonic Lyapunov Functions: 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 momentum. 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.<|reference_end|>
@article{willis2024building,
    title={Building a Better B-Dot: Fast Detumbling with Non-Monotonic Lyapunov
  Functions},
    author={Jacob B. Willis, Paulo R.M. Fisch, Aleksei Seletskiy, Zachary
  Manchester},
    journal={arXiv preprint arXiv:2407.02724},
    year={2024},
    archivePrefix={arXiv},
    eprint={2407.02724},
    primaryClass={eess.SY cs.SY}
}