GE巻頭言103.indd

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8104 7 2 2002 6 1. はじめに 21 VR VR 2. スポーツ技能向上と VR 技術の整理 2.1 スポーツ技能の分類 1 2 3 4 14 114 VR 2. 2 筋力トレーニング VR VR 8

JVRSJ Vol.7 No.2 June, 2002 1059 2 2.3 感覚器 座標変換トレーニング 3 VR HMD VR VR 2.5 認識 判断 運動トレーニング VR VR 2.4 運動パターントレーニング 2.3 2 VR 3. スポーツ特有の課題 3.1 機器の軽量 小型化 VR 3 9

106 7 2 2002 6 3.2 運動の高速性 高加速性 VR 19[m/sec] 4 30[msec] 60[cm] 3.3 力感覚の呈示 VR 1 2 4. 幾つかの試み 4.1 筋力トレーニング 1 5 1 1 4.2 感覚器 座標変換トレーニング VRML Virtual Reality Modeling Language 6 HMD 7 4.3 運動パターントレーニング 89 1011 10

JVRSJ Vol.7 No.2 June, 2002 107 11 HMD 12 4.4 判断トレーニング 13 14 15 5. 力感覚呈示システムの試作例 5.1 パラレルワイヤ駆動システム 1 16 17 18 19 2 20 VR 21 22 3 12 GG 20 N 図 1. パラレルワイヤ駆動システム概念図 Fig. 1 Concept of parallel wire drive system 図 2. バーチャルテニスシステム Fig. 2 Virtual tennis system 11

12 108 7 2 2002 6 2 6 図 3. シリアルリンク構造パラレルワイヤ駆動システム Fig.3 Serial link structure/parallel wire drive system 5.2 粒子内蔵型受動要素による力覚提示システム 23 4 5 外膜排気口粒仕切り中枠図 4. 粒子受動要素構造 Fig.4 Structure of particle element 伸長収縮曲げ捻り図 5. 要素変形の様子 Fig.5 Deformation of element 図 6. 双腕用力提示装置 Fig.6 Force display for dual arm 7 7 A B C 8 B C 9 500 g 12

JVRSJ Vol.7 No.2 June, 2002 109 13 領域 C 壁 領域 B 水中領域 A 空中図 7. 仮想設定環境 Fig.7. Virtual world 手先軌道 Covering film 図 10. パイプ形状型装具 Fig.10 Outfit with pipe shape Particles Soft tube (cloth) position[cm] speed[cm/sec] force[n] force position speed Area C Area B Area A 図 11. 肩 肘用装具 Fig.11 Outfit for shoulder and elbow 図 8. 実験結果 Fig.8 Experimental result 図 9. 仮想ボクシングトレーニング Fig.9 Virtual boxing training 5.3 積層型受動要素を用いた力覚提示システム 24 12 12 2425 13

14 110 7 2 2002 6 13 13 図 14 積層型可変粘弾性要素を利用した力提示装置 Fig.14 Force display by using passive elements with variable visco-elasticity force [N ] 図 12 積層型可変受動要素の変形例とシート固定 Fig.12 Deformation and fixed state of passive element with laminated structure 5 4 3 2 1 0 14 3 3.3 kg 0.088 0.081 0.047 0.023 0 20 40 60 velocity [m m /sec] 図 13 粘性の実験結果 Fig.13 Experimental result of viscosity 目標粘性係数 0.1 0.075 0.05 0.025 6. おわりに VR VR IT RT Robot Technology VR 参考文献 1 Vol.51No.pp.290 294 2001 2 Sportsmedicine Quartly 19 1996 3 1999.10Vol.102 No.971 pp.19-22 1999 4 5 6VRML 2001 9 14

JVRSJ Vol.7 No.2 June, 2002 111 15 Vol4 No.4 pp.589-598 1999 8 pp.903-907 1992 9 Vol. 44 No.12 pp.702-709 2000 10 Vol.5 No.1 pp.803-810 2000 11 Vol.3 No.1 pp.13-19 1998 12 Vol.4 No.2 pp.431-438 1999 13 Technical Report of IEICE, PRMU 2000-188(2001-02) 14 pp.281-284 1999 4 15 Vol.5, No.3 pp. 1033-1040 2000 16 D-II vol.j74-d-ii no.7 pp.887-894 1991 [17]Sadao Kawamura and Ken Ito, A New Type of Master Robot for Teleoperation Using A Radial Wire Drive System, Proc. of the 1993 IEEE International Conference on Intelligent Robots and Systems IROS'93 pp.55-60 Yokohama, Japan July26-30, (1993) [18]Sadao Kawamura, Won Choe, Satoshi Tanaka, and Shunmugham R. Pandian, Development of an Ultrahigh Speed Robot FALCON using Wire Drive System, Proc. of the IEEE International Conference on Robotics and Automation, Nagoya, May 21-27, pp.215-220, (1995) [19] Vol.15 No.1 pp.153-161 (1997) [20]Tetsuya Morizono, Kazuhiro Kurahashi, Sadao Kawamura, Analysis and control of a force display system driven by parallel wire mechanism, Robotica, Vol. 16,p.p.551-564, (1998) 21 C 6 648 2000-8 22 2002 23 Vol.37 No.12 pp.1134-1139 (2001) 24 Sadao Kawamura, Takashi Yamamoto, DaijiroIshida, Satoshi Ogata, Yuichiro Nakayama, andosamu Tabata Development of Passive Elementswith Variable Mechanical Impedance for Wearable Robots Proc. of the IEEE International Conference on Robotics and Automation, Washington U.S.A. May2002 25 Osamu Tabata, SatoshiKonishi, Pierre Cusin,Yuichi Ito, Fumie Kawai, Shinichi Hirai and SadaoKawamura MICROFABRICATED TUNABLE BENDING STIFFNESS DEVICE Proc.of the 13 the Annual Int. Conf. On Micro Electro Mechanical Systems pp 23-27(2000) KAWAMURA Sadao 1981 1986 1986 1987 1995 1996 15