Clutter-Aware Spill-Free Liquid Transport via Learned Dynamics
<|reference_start|>Clutter-Aware Spill-Free Liquid Transport via Learned Dynamics: In this work, we present a novel algorithm to perform spill-free handling of open-top liquid-filled containers that operates in cluttered environments. By allowing liquid-filled containers to be tilted at higher angles and enabling motion along all axes of end-effector orientation, our work extends the reachable space and enhances maneuverability around obstacles, broadening the range of feasible scenarios. Our key contributions include: i) generating spill-free paths through the use of RRT* with an informed sampler that leverages container properties to avoid spill-inducing states (such as an upside-down container), ii) parameterizing the resulting path to generate spill-free trajectories through the implementation of a time parameterization algorithm, coupled with a transformer-based machine-learning model capable of classifying trajectories as spill-free or not. We validate our approach in real-world, obstacle-rich task settings using containers of various shapes and fill levels and demonstrate an extended solution space that is at least 3x larger than an existing approach.<|reference_end|>
@article{abderezaei2024clutter-aware,
    title={Clutter-Aware Spill-Free Liquid Transport via Learned Dynamics},
    author={Ava Abderezaei, Anuj Pasricha, Alex Klausenstock, and Alessandro
  Roncone},
    journal={arXiv preprint arXiv:2408.00215},
    year={2024},
    archivePrefix={arXiv},
    eprint={2408.00215},
    primaryClass={cs.RO}
}