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Towards Low-Gravity Planetary Exploration using Reinforcement Learning for Walking, Jumping, and In-flight Attitude Control
J{\o}rgen An · 2026-05-26 · via cs updates on arXiv.org

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Abstract:This paper presents reinforcement learning (RL) policies for dynamic quadrupedal locomotion in planetary exploration scenarios. Building on a taskoptimized quadruped with a 5-bar leg design, we develop RL policies for walking, vertical jumping, forward jumping, and in-flight attitude control, explicitly tailored to the reduced gravity on Mars. These policies jointly enable such robots to overcome obstacles larger than themselves through coordinated jumping and precise in-flight reorientation for safe landings. We demonstrate Sim2Real transfer of the attitude control policy on the Olympus quadruped through single-axis reorientation tests, while all locomotion policies are validated in simulation. A complete Mars exploration mission scenario demonstrates coordinated policy deployment across challenging terrain. Experimental results show 90° attitude reorientation in 2.6 seconds, with simulations demonstrating 3.1 meter vertical jumps and 3.9 meter forward jumps under Martian gravity conditions. - Supplementary video: this https URL
Comments: 16 pages, 16 figures
Subjects: Robotics (cs.RO); Systems and Control (eess.SY)
Cite as: arXiv:2605.24643 [cs.RO]
  (or arXiv:2605.24643v1 [cs.RO] for this version)
  https://doi.org/10.48550/arXiv.2605.24643

arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Jørgen Anker Olsen [view email]
[v1] Sat, 23 May 2026 16:20:23 UTC (3,194 KB)