静電気力触覚ディスプレイにおける手指移動速度に応じた刺激提示手法の提案

抄録

In this study, we propose and validate the application of an impedance model as a dynamic waveform output method, which responds to fingertip movements, using an electrostatic tactile display that provides tactile sensations by tracing a transparent surface. Specifically, we investigated how the perception of ”viscosity,” a fundamental tactile sensation, changes by varying the viscosity coefficient of the impedance model. A viscosity-derived signal was added as an offset to the sinusoidal waveform, which served as the shape signal. The results showed that dynamic signal fluctuations using the impedance model led to tactile changes, including a weakened sense of bumpiness, a reduced perceived grain size, and a lighter feel to finger movement. Furthermore, while an increase in the viscosity coefficient tended to enhance the perception of stickiness, no clear proportional relationship was observed between the increase in the viscosity coefficient and the perception of stickiness.