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Teleoperator performance with varying force and visual feedback

M J Massimino1, T B Sheridan

  • 1McDonnell Douglas Aerospace, Houston, TX 77062-6208.

Human Factors
|March 1, 1994
PubMed
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Visual and force feedback significantly impact telemanipulation task performance. While video feedback introduces some differences, the core performance factors remain consistent with direct viewing for peg-in-hole tasks.

Area of Science:

  • Human-Computer Interaction
  • Robotics
  • Human Factors Engineering

Background:

  • Telemanipulation tasks, such as peg-in-hole, are critical in remote operations.
  • Understanding the influence of visual and force feedback is essential for optimizing human performance in these tasks.
  • Previous research has explored various feedback modalities, but direct comparisons between direct vision and video feedback in complex manipulation are ongoing.

Purpose of the Study:

  • To experimentally evaluate the impact of different visual and force feedback conditions on human performance in peg-in-hole telemanipulation tasks.
  • To compare task completion times and identify significant factors influencing performance under direct vision versus video feedback.
  • To determine if the video medium itself introduces significant performance decrements compared to direct viewing.

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Main Methods:

  • An experimental study involving six human subjects performing peg-in-hole tasks using a master/slave manipulator.
  • Two experimental sessions: one with direct vision and another with video monitor feedback.
  • Systematic variation of visual feedback (subtended visual angle, video frame rate) and force feedback, alongside task difficulty, to assess their effects on task completion times.

Main Results:

  • Under direct vision, subtended visual angle, force feedback, task difficulty, and their interactions significantly affected task completion times.
  • With video feedback, video frame rate, force feedback, task difficulty, and their interactions were significant performance determinants.
  • Comparison revealed that the video medium itself did not significantly alter task times relative to direct viewing, except for effects related to subtended visual angle and reduced frame rate.

Conclusions:

  • Both direct vision and video feedback are viable for telemanipulation, with force feedback and task difficulty being crucial across both.
  • Video frame rate and subtended visual angle are key parameters to optimize for video-based telemanipulation performance.
  • The findings suggest that with appropriate parameter tuning, video-based teleoperation can achieve performance comparable to direct viewing for intricate tasks.