Multimodal Evaluation of the Differences between Real and Virtual Assemblies.

What are the technological bottlenecks in virtual assembly simulations with haptic feedback? To tackle this question, we present an evaluation study in which real feedback modalities are gradually replaced by synthetic ones. In particular, the effects of the following factors on the user performance and perception during virtual assemblies are analyzed: () a visual feedback system consisting of an nVisor head-mounted display, () our haptic device HUG suited for unscaled upper-body movements, and () our novel six-DoF constraint-based haptic rendering algorithm. Besides that, the influence of ( ) real collision sounds is also examined to a lesser extent.