Improvement of the ungrounded force display using grooved cam This paper proposes the ungrounded force display using the grooved cam. Using the human illusion, the user can feel the force in the one direction when they use proposed device. It is mainly configured the cam and the slider. The slider follows the cam and moves translational movement. In this paper, we create the new prototype which solving the problems that emerged from the previous prototype. We evaluate the device using the two experiments. One is the subjective evaluation. Second one is the force presentation from the new prototype as the quantitative evaluation. We could solve problems of previous prototype by changing the cam type from plate to groove and blushless motor, and the new one produce the force more clearly than the previous prototype.

Providing navigation assistance through ForceHand: a wearable forcefeedback glove Conveying information through forcefeedback has multiple advantages as compared to auditory or visual information transfer. Kinesthetic senses, in general, have shown enormous importance in human communication and to the very experience of being human. Kinesthetic learners tend to learn complex tasks through forcefeedback and tactile sensations, in much lesser time as compared to auditory and visual learners. Navigation cues provided through forcefeedback could eliminate the need for intensively engaging oneself to mobile devices. This type of feedback cue could also eliminate the need for auditory and visual engagement of the user, which can help sustained awareness of the proximity. This paper attempts the realization of a navigation assistant using a forcefeedback glove enabled with lowpressure pneumatic artificial muscles (PAMs). This glove enables the user to receive navigation cues through forcefeedback on the forearm. We used a gaming environment to evaluate the feasibility of using the glove as a navigation assistant. The gaming experiment also provided vast subjective feedback. 89.5% of the participants chose forcefeedback as their most preferred type of cue. In addition, an experiment was carried out to identify the optimum resolution of input air pressure that could be successfully differentiated by the users. The average % accuracy in identifying the correct larger force from pairs of forces was found to be 97.6%, 89.2%, 80.8%, and 75.6%, respectively, for resolutions of 20, 15, 10, and 5kPa.