Feedback of Rotational Sensation Experienced by Body for Immersive Telepresence

In our previous study, we proposed a telepresence system that can transfer the riding sensation of a vehicle (Segway) for assisting collaborative task. The system could provide a local expert who remotely attend the task not only the view of a remote environment that is captured by a camera but also the vestibular perception during the movement of the camera. In this study, we examined the rotation feedback by the rotary seat when the camera is rotated. The measured intensity adjustment showed that the angular acceleration of the rotary seat was about half that of the camera rotation. Further, the result of the simulator sickness questionnaire scores showed that the inphase rotation of the seat with the camera is appropriate for suppressing virtual reality sickness, indicating that the requirement of vestibular intensity is quite low compared with the visual cue showed on the head mounted display, which allows a designer to develop a sensation feedback device that has an actuator of low strength.