Electromyography for Teleoperated Tasks in Weightlessness

The cooperation between robots and astronauts will become a core element of future space missions. This is accompanied by the demand for suitable input devices. An interface based on electromyography (EMG) represents small, light, wearable device to generate continuous three-dimensional (3D) control signal from voluntarily muscle activation operator's arm. We analyzed influence microgravity task performance during two-dimensional (2D) screen. Six subjects performed aiming tracking tasks in parabolic flights. Three different levels fixation-fixed feet using foot straps, semi-free rail, free-floating feet-are tested investigate how much user fixation required operate via interface. study showed that weightlessness affects usage only small extent. Success rates 89${\%}$ 96${\%}$ are reached within all conditions microgravity. A significant effect 0 1G could not be identified test series fixed feet, while significantly worse results fine gross motion times 0G compared ground tests (with success 92${\%}$ 99${\%}$ 1G). Further adaptation altered proprioception may needed here. Hence, rails as already mounted International Space Station (ISS) would sufficient use weightlessness. Low impact microgravity, high rates, an easy handling system, indicates potential EMG-based teleoperation space.