Perceptual evaluation of the passive/active torque and stiffness asymmetry of a hybrid haptic device

C. Rossa 1 M. Anastassova 1 A. Micaelli 1 J. Lozada 1
1 DIASI - Département Intelligence Ambiante et Systèmes Interactifs
Abstract : Hybrid haptic interfaces combining brakes and motors can present dissimilar torque and stiffness capabilities when dissipating or restoring energy. This paper aims at identifying the asymmetry thresholds that lead to an alteration in the perception of elasticity simulated by such devices. 17 subjects took part in an experiment consisting in interacting with virtual springs with either controllable stiffness or torque asymmetry levels, and identifying if the springs were symmetric or not. Experimental results indicate that when the decompression stiffness or torque were less than 80% and 60% of the compression stiffness or torque respectively, users did not perceive the asymmetry in 80% of trials. This suggests that hybrid devices can present dissimilar active/passive torque or stiffness capabilities without affecting the perception of elasticity.
Keywords : Perceptual evaluation Perception thresholds Passive/active Hybrid actuator Haptic devices Controllable stiffness Active/passive Torque Stiffness Neurology Haptic interfaces Virtual spring Actuators Elasticity Mice (computer peripherals)
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Conference papers
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Submitted on : Tuesday, June 12, 2018 - 3:30:40 PM
Last modification on : Wednesday, January 23, 2019 - 2:39:24 PM

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C. Rossa, M. Anastassova, A. Micaelli, J. Lozada. Perceptual evaluation of the passive/active torque and stiffness asymmetry of a hybrid haptic device. 9th International Conference on Haptics: Neuroscience, Devices, Modeling, and Applications, EuroHaptics 2014, Jun 2014, Versailles, France. pp.55-60, ⟨10.1007/978-3-662-44193-0_8⟩. ⟨cea-01813730⟩

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