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Rafael Papallas

5 accepted papers

2023

Adaptive approximation of dynamics gradients via interpolation to speed up trajectory optimisation

ICRA 2023poster

Trajectory optimisation methods for robotic motion planning often require the use of first order derivatives of the dynamics of the system with respect to the states and controls of the system. Particularly when multi-contact dynamics are present, these derivatives are often numerically approximated…

Cited by 2SourceScholar
2023

Goal-Conditioned Action Space Reduction for Deformable Object Manipulation

ICRA 2023poster

Planning for deformable object manipulation has been a challenge for a long time in robotics due to its high computational cost. In this work, we propose to reduce this cost by reducing the number of pick points on a deformable object in the action space. We do this by identifying a small number of…

Cited by 6SourceScholar
2022

To ask for help or not to ask: A predictive approach to human-in-the-loop motion planning for robot manipulation tasks

IROS 2022poster

We present a predictive system for non-prehensile, physics-based motion planning in clutter with a human-in-the-loop. Recent shared-autonomous systems present motion planning performance improvements when high-level reasoning is provided by a human. Humans are usually good at quickly identifying hig…

Cited by 10SourceScholar
2020

Online Replanning With Human-in-the-Loop for Non-Prehensile Manipulation in Clutter - A Trajectory Optimization Based Approach

RA-L 2020

We are interested in the problem where a number of robots, in parallel, are trying to solve reaching through clutter problems in a simulated warehouse setting. In such a setting, we investigate the performance increase that can be achieved by using a human-in-the-loop providing guidance to robot pla

Cited by 16SourceScholar