振動重畳による指での擬似力覚増強現象 Enhancement of Perceptual Force by Presenting Vibration to the Strained Skin of the Finger

The conventional haptic devices required a large space or expensive actuators. To cope the issues, many studies used a perceptual illusion to present perceptual force to the user. Especially, many studies using skin deformation have been proposed. However, the amount of the skin deformation is limited, and the amount of perceptual force that the illusion presents is also limited. We discovered a phenomenon that perceptual force caused by the strained skin can be enhanced by presenting vibration. In this phenomenon, the direction of the force switches when the direction of the skin strain changes. The result of the experiment suggested that the vibration enhanced the perceptual force caused by the skin strain in flexion direction. On the other hand, we could not conclude it in extension direction. However, some participants reported a strong force caused by the skin strain in extension direction when the vibration was presented.

1. 中村，Yem, 梶本：振動重畳による指での擬似力覚増強現象，日本機械学会ロボティクス・メカトロニクス講演会2016，2016.6，パシフィコ横浜.[pdf]
2. T. Nakamura, V. Yem, and H. Kajimoto, "Enhancement of Perceptual Force by Presenting Vibration to the Strained Skin of the Finger" Proc. of IEEE HapticsSymposium 2016, Philadelphia April 8-11th, pp. 369-371, 2016.[pdf]

偏加速度振動による疑似力覚における知覚マスキングの関与可能性について Cause of force sensation generated by asymmetric acceleration: Possible involvement of temporal masking

The force sensation is induced when people hold a vibrator driven with asymmetric acceleration. This phenomenon is expected to achieve simple and low-cost force feedback systems. However, the cause of this phenomenon was unknown.Therefore, we focused on the masking of perception and conducted an experiment using sinusoidal wave and intervals. The result suggested that the temporal masking involves the phenomenon.

1. 中村，梶本：偏加速度振動による疑似力覚における知覚マスキングの関与可能性について，第16回 公益社団法人 計測自動制御学会 システムインテグレーション部門講演会SI2016，2016.12，札幌コンベンションセンター.[pdf]