3DOF Multitouch Haptic Interface with Movable Touchscreen

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  • 3自由度可動式タッチスクリーンを用いたマルチタッチ力覚提示装置

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<p>This paper describes the development of a multitouch haptic interface equipped with a movable touchscreen. When the relative position of two of a user's fingertips is fixed on a touchscreen, the fingers can be considered a hand-shaped rigid object. In such situations, a reaction force can be exerted on each finger using a three-degrees of freedom (3DOF) haptic interface. In this study, a prototype 3DOF haptic interface system comprising a touchscreen, a 6-axis force sensor, an X-Y stage, and a capstan drive system was developed. The developed system estimates the input force from fingers by using sensor data and each finger's position. And, the system generates reaction forces from virtual objects to the user's fingertips by controlling the static frictional force between each of the user's fingertips and the screen. The system enables users to perceive the shape of two-dimensional virtual objects displayed on the screen. Moreover, users can deform elastic virtual objects, and feel their rigidity through the interface. The effectivity of the prototype system was confirmed through some evaluation experiments.</p>

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