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Investigating Ergonomic Task Heights for Improved Human-Machine Interaction in Collaborative Work
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- Authors
- Daewoong Choi, Seungjun Lee, Cheonin Oh, Daesub Yoon, Maryam Bathaei Javareshk
- Issue Date
- 2025-06
- Citation
- International Workshop on Computer Science and Engineering (WCSE) 2025, pp.113-121
- Language
- English
- Type
- Conference Paper
- Abstract
- Industry 5.0 emphasizes human-centric manufacturing, where ergonomic human-machine interaction (HMI) plays a key role in supporting safe and efficient collaboration. In this context, collaborative robots (cobots) offer greater positioning flexibility than fixed-height workstations, supporting more personalized ergonomic configurations. To explore this potential, we investigated task height as a critical ergonomic factor in human-robot collaboration. We conducted an experiment with 100 participants, where each performed collaborative tasks with a cobot under three predefined heights and one self-selected optimal height. During the tasks, physiological signals and subjective assessments were recorded. Results showed that participants experienced the lowest physical and mental workload at their self-selected height, while even small deviations led to increased strain. To examine whether individual characteristics could predict optimal task height, we applied a simple linear regression using body height alone, which explained only 46% of the variance. This finding suggests that body height is insufficient to fully capture ergonomic preferences. Therefore, improving ergonomic workspaces in collaborative robotics will require further personalization beyond standard anthropometric dimensions. As a next step, we plan to analyze worker posture from multi-view video data to support the development of adaptive HMI systems tailored to individual needs.
- KSP Keywords
- Adaptive HMI, Anthropometric dimensions, Collaborative robotics, Collaborative task, Human-centric manufacturing, Human-machine interaction, Human-robot collaboration(HRC), Key role, Multiview video, Optimal height, Physiological signals