日本語フィールド
著者：Koichi Nakayama, Juan Liu and Hiroshi Ando題名：Psychophysical investigation of hardness perception for haptic device development towards Kansei engineering発表情報：International Journal of Biometrics (IJBM) 巻: 3 号: 4 ページ: 337-352キーワード：
hardness perception; Weber ratio; system requirement; portable haptic device概要：抄録：This paper describes the study on hardness perception of human fingers in order to find required system performance for haptic devices that can render hard objects. Two psychophysical experiments were carried out using an apparatus that simulated different hardness levels by reproducing the trajectory of finger colliding with a virtual object. For a device to render very hard objects, the position control cycle should be shorter than 40 ms and the maximum acceleration should be at least 50 m / s^2. It is found that the Weber ratio of hardness perception varies under different performance setting of the apparatus, among 0.17-0.57 in our experimental results. The minimum is reached at 120 ms acceleration time when the virtual object is not very hard or soft.
Moreover we evaluated a prototype of our portable haptic device which fulfils the above system requirements. The result suggests that the device is able to present the feeling of various hardness and size to users.英語フィールド
Author：Koichi Nakayama, Juan Liu and Hiroshi AndoTitle：Psychophysical investigation of hardness perception for haptic device development towards Kansei engineeringAnnouncement information:International Journal of Biometrics (IJBM) Vol: 3 Issue: 4 Page: 337-352Keyword：
hardness perception; Weber ratio; system requirement; portable haptic deviceAn abstract：This paper describes the study on hardness perception of human fingers in order to find required system performance for haptic devices that can render hard objects. Two psychophysical experiments were carried out using an apparatus that simulated different hardness levels by reproducing the trajectory of finger colliding with a virtual object. For a device to render very hard objects, the position control cycle should be shorter than 40 ms and the maximum acceleration should be at least 50 m / s^2. It is found that the Weber ratio of hardness perception varies under different performance setting of the apparatus, among 0.17-0.57 in our experimental results. The minimum is reached at 120 ms acceleration time when the virtual object is not very hard or soft.
Moreover we evaluated a prototype of our portable haptic device which fulfils the above system requirements. The result suggests that the device is able to present the feeling of various hardness and size to users.