Vibration feedback models for virtual environments

Applying “Out of Body” Vibrotactile Illusion to Two-Finger Interaction for Perception of Object Dynamics

“…These have been mostly used with mobile devices or hand-held game controllers to provide supplementary feedback for various interaction events (e.g., alarm, touch/key input, and virtual collision). Researchers have searched for ways to simulate other types of information by controlling the vibrating signal (e.g., texture simulation) [6] and by combining it with other modalities [7]. Nevertheless, vibrating motors are still inherently limited in terms of their ability to convey true haptic force, i.e., rigid contact as well as directional or inertial effects.…”

Manipulation of Dynamically Deformable Object Using Impulse-Based Approach

“…It was proved that this feedback of vibration is helpful to for users to discriminate materials. Okamura et al (1998) expanded this approach to other types of interaction including stroking textures and puncture; their approach is called reality-based modeling. Also, in their successive research in Okamura et al (2000), they proposed an approach to optimizing parameters of vibration based on psychological evaluation on reality.…”

Perceptual Issues Improve Haptic Systems Performance

“…This is a new approach to force augmentation in teleoperation, since the acquainted concept of signal manipulation in this field concerns mainly constant amplification or variable force scaling. As originally proposed by Okamura et al (1998), we use stimuli in frequency domain for very low forces. But, now, this concept is used in a standard teleoperation scenario to present only the sub-threshold, not-perceivable forces.…”