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Evaluation of wearable inertial sensors for spacesuit design applications using hardware-in-the-loop simulation

AIAA Scitech 2020 Forum, Vol: 1 PartF
2020
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Conference Paper Description

A high rate of injury is currently observed for spaceflight crewmembers when performing extravehicular activity or when training for extravehicular activity. Although it is known that this is due to adverse human interactions with the spacesuit, designing a spacesuit to reduce the incidence of injury proves difficult due to the inability to observe the motion of the crewmember inside the suit. As part of an effort to develop a wearable in-suit inertial sensor system for studying human motion inside spacesuits, the current work presents an approach to simulating the performance of wearable IMU systems. The simulation enables rapid evaluation of different hardware architectures for the wearable sensor system so that the large trade space in which the architectures reside can be explored before any hardware is fabricated, which reduces development cost and timeline. The simulation uses optical motion capture data of human motions as a source of ground truth and corrupts this with measurement errors including sensor noise captured from bench-top tests of IMUs under consideration for inclusion in the wearable system. Sample results verifying the accuracy of the simulation are presented, and directions for future work are discussed.

Bibliographic Details

Young Young Shen; Shaylah Wood; Allison P. Anderson

American Institute of Aeronautics and Astronautics (AIAA)

Engineering

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