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Biomechanical fidelity of simulated pick-and-place tasks: impact of visual and haptic renderings

Simon Hilt 1, 2 Thomas Meunier 1 Charles Pontonnier 1, 2 Georges Dumont 1, 2
2 MIMETIC - Analysis-Synthesis Approach for Virtual Human Simulation
UR2 - Université de Rennes 2, Inria Rennes – Bretagne Atlantique , IRISA-D6 - MEDIA ET INTERACTIONS
Abstract : Virtual environments (VE) and haptic interfaces (HI) tend to be introduced as virtual prototyping tools to assess ergonomic features of workstations. These approaches are costeffective and convenient since working directly on the Digital Mock-Up in a VE is preferable to constructing a physical mockup in a Real Environment (RE). However it can be usable only if the ergonomic conclusions made from the VE are similar to the ones you would make in the real world. This study aims at evaluating the impact of visual and haptic renderings in terms of biomechanical fidelity for pick-and-place tasks. Fourteen subjects performed time-constrained pick-and-place tasks in RE and VE with a real and a virtual, haptic driven object at three different speeds. Motion of the hand and muscles activation of the upper limb were recorded. A questionnaire assessed subjectively discomfort and immersion. The results revealed significant differences between measured indicators in RE and VE and with real and virtual object. Objective and subjective measures indicated higher muscle activity and higher length of the hand trajectories in VE and with HI. Another important element is that no cross effect between haptic and visual rendering was reported. Theses results confirmed that such systems should be used with caution for ergonomics evaluation, especially when investigating postural and muscle quantities as discomfort indicators. The last contribution of the paper lies in an experimental setup easily replicable to asses more systematically the biomechanical fidelity of virtual environments for ergonomics purposes.
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Submitted on : Sunday, January 3, 2021 - 10:34:11 PM
Last modification on : Friday, April 8, 2022 - 4:08:03 PM
Long-term archiving on: : Sunday, April 4, 2021 - 6:33:43 PM


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Simon Hilt, Thomas Meunier, Charles Pontonnier, Georges Dumont. Biomechanical fidelity of simulated pick-and-place tasks: impact of visual and haptic renderings. IEEE Transactions on Haptics (ToH), IEEE, 2021, pp.8. ⟨10.1109/TOH.2021.3052658⟩. ⟨hal-03093454⟩



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