Evaluation of pseudo-haptic feedback for simulating torque: a comparison between isometric and elastic input devices

Authors:
Alexis Paljic;Jean-Marie Burkhardt;Sabine Coquillart
Affiliations:
Institut National de Recherche en Informatique et Automatique, Le Chesnay Cedex, France;Institut National de Recherche en Informatique et Automatique, Le Chesnay Cedex, France;Institut National de Recherche en Informatique et Automatique, Le Chesnay Cedex, France
Venue:
HAPTICS'04 Proceedings of the 12th international conference on Haptic interfaces for virtual environment and teleoperator systems
Year:
2004

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Abstract

In this work, we investigate whether pseudo-haptic feedback is suitable for simulating torque feedback. Pseudohaptic feedback is based on the coupling of visual feedback and the internal resistance of an input device which passively reacts to the user's applied force. An experiment was conducted to evaluate this feedback and compare isometric and elastic input devices. It involved compliance discrimination between real torsion springs and pseudohaptic simulated torsion springs. Results show that torque haptic feedback was successfully simulated, with a difference in performance between device types. The elastic device yielded better resolution but higher subjective distortion of perception compared to the isometric device. Results are discussed on the basis of user answers, answer time, and applied torque.