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Exploring planet geology through force-feedback telemanipulation from orbit.

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This study developed a novel control method for teleoperation in space exploration, enabling safe and accurate geological sampling despite high communication delays and packet loss. The system ensures stability and prevents hard impacts, crucial for remote robotic missions.

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Area of Science:

  • Robotics and Automation
  • Space Exploration Technology
  • Human-Robot Interaction

Background:

  • Space exploration roadmaps require robotic surface geology investigation and in situ resource utilization.
  • Unstructured, remote environments necessitate teleoperation, often with force-feedback (FF), for tasks like geological sampling.
  • High latency, low bandwidth, and packet loss in space-to-ground communication pose significant challenges for stable and safe teleoperation.

Purpose of the Study:

  • To develop and validate a control method for stable and accurate teleoperation under challenging space communication conditions.
  • To enhance safety in tele-robotic operations by preventing hard impacts.
  • To demonstrate the feasibility of haptic telemanipulation for space exploration tasks.

Main Methods:

  • A new control method was designed to ensure stability and accuracy at high communication delays.
  • The method incorporates intrinsic safety features to prevent hard impacts.
  • A tele-exploration scenario was simulated using the Analog-1 experiment, with an astronaut on the ISS controlling an Earth-based robot via a 6-degree-of-freedom (DoF) force-feedback (FF) haptic device.

Main Results:

  • The 6-DoF FF telemanipulation was successfully performed under simulated spaceflight conditions with round-trip delays of 770-850 ms and 1.27% packet loss.
  • The control method demonstrated stability without sacrificing speed or positioning accuracy.
  • The experiment confirmed the intrinsic safety property preventing hard impacts.

Conclusions:

  • The developed control method is feasible for space exploration telemanipulation under realistic spaceflight communication constraints.
  • Haptic feedback significantly benefits safe and accurate remote interaction for geological sampling.
  • This approach enables effective tele-exploration, advancing robotic capabilities in challenging environments.