6 research outputs found
Automatic Filter Design for Synthesis of Haptic Textures from Recorded Acceleration Data
Sliding a probe over a textured surface generates a rich collection of vibrations that one can easily use to create a mental model of the surface. Haptic virtual environments attempt to mimic these real interactions, but common haptic rendering techniques typically fail to reproduce the sensations that are encountered during texture exploration. Past approaches have focused on building a representation of textures using a priori ideas about surface properties. Instead, this paper describes a process of synthesizing probe-surface interactions from data recorded from real interactions. We explain how to apply the mathematical principles of Linear Predictive Coding (LPC) to develop a discrete transfer function that represents the acceleration response under specific probe-surface interaction conditions. We then use this predictive transfer function to generate unique acceleration signals of arbitrary length. In order to move between transfer functions from different probe-surface interaction conditions, we develop a method for interpolating the variables involved in the texture synthesis process. Finally, we compare the results of this process with real recorded acceleration signals, and we show that the two correlate strongly in the frequency domain
Electrostatic Friction Displays to Enhance Touchscreen Experience
Touchscreens are versatile devices that can display visual content and receive touch input, but they lack the ability to provide programmable tactile feedback. This limitation has been addressed by a few approaches generally called surface haptics technology. This technology modulates the friction between a userâs fingertip and a touchscreen surface to create different tactile sensations when the finger explores the touchscreen. This functionality enables the user to see and feel digital content simultaneously, leading to improved usability and user experiences. One major approach in surface haptics relies on the electrostatic force induced between the finger and an insulating surface on the touchscreen by supplying high AC voltage. The use of AC also induces a vibrational sensation called electrovibration to the user. Electrostatic friction displays require only electrical components and provide uniform friction over the screen. This tactile feedback technology not only allows easy and lightweight integration into touchscreen devices but also provides dynamic, rich, and satisfactory user interfaces. In this chapter, we review the fundamental operation of the electrovibration technology as well as applications have been built upon
觊èŠãã£ãŒãããã¯ãçšããäœæ§æèŠã®æäœ
人éãèªãã®èäœã«å¯ŸããŠæã€èå³ã¯å€§ããïŒå€ãã®äººéã¯äœåçã»ç¥èœçã»çŸçãªé¢ã§ä»ã®äººéãããåªããèäœã欲ãããšèãããïŒãŸãæ§ã
ãªç¹æ®ãªäœãæã€ç©ºæ³äžã®ãã£ã©ã¯ã¿ãŒã«æ§ã人éãšã¯ç°ãªãæ§é ã®èº«äœã«èå³ãæã€ç©ãå€ãã§ãããïŒã ã身äœæ©èœã®åäžã®ããã«ã¯éåžžé·æéã®ç¶ç¶ããèšç·Žãå¿
èŠãšãïŒäººéãšã¯ç°ãªã身äœãžã®å€èº«ã¯äžå¯èœã§ãããšãããïŒç§åŠæè¡ã®çºå±ã«äŒŽãèäœåœ¢ç¶ããã³éåæ©èœãžã®ç©ççãªä»å
¥æ¹æ³ãåºãŸãã€ã€ãããïŒæªã ã«èº«äœçãªã¹ã¯ãšééçã³ã¹ããé«ãïŒè€éãªè£
眮ãå¿
èŠãšãããã誰ããæ°è»œã«å©çšã§ãããã®ã§ã¯ãªãïŒãã®ãããªèæ¯ããæ¬ç 究ã§ã¯ïŒäººéã®èäœãã®ãã®ã«ä»å
¥ããã®ã§ã¯ãªãïŒèäœãçæããæèŠã§ããäœæ§æèŠãèäœå€éšããæäœããããšã§èäœã®äž»èŠ³çç¹æ§ãæäœããããšãç®æšãšããïŒäž»ã«èº«äœè¡šé¢ã®æèŠãåºæ¿ããã¢ã¯ãã¥ãšãŒã¿ãšããŠåºã䜿ãããŠãããã€ã¹ã³ã€ã«åæ¯ååã¯ïŒæ§ã
ãªè§Šæã®å瀺ã簡䟿ãªã»ããã¢ããã§å®çŸã§ããïŒãããã£ãŠããã身äœéåã«åæãããŠé§åããæ¯åãã£ãŒãããã¯ã·ã¹ãã ãéçºãïŒéåã«äŒŽã£ãŠçºçãã身äœå
éšã®æèŠãæäœããããšãè©Šã¿ãïŒäœæ§æèŠã®æäœã«é¢ããæ¬ç 究ã¯2 ã€ã®æŠç¥ã«ãã£ãŠæ§æãããïŒäžã€ã¯äœæ§æèŠã®ãå¢åŒ·ãã§ããïŒããã¯èªå·±èº«äœéåãææ¡ããèœåãé«ãïŒããé®®æã«ïŒãããã¯è©³çŽ°ã«éåç¶æ
ãç¥èŠãããéçãªæäœã§ããïŒäžæ¹ã§ïŒããäžã€ã®æŠç¥ã¯äœæ§æèŠã®è³ªçãªæäœã§ãããå€èª¿ãã§ããïŒããã¯èº«äœèªäœã®ç¡¬ããéããšãã£ãç¹æ§ãå€åãããããšã§ããïŒçµæãšããŠèº«äœãæ§æããæ質ã»æ§é ã䞻芳çã«å€èª¿ããããšã«ãªãïŒããã2 ã€ã®æŠç¥ã«æ²¿ã£ãå
·äœçãªææ³ãïŒäœæ§æèŠã®å¢åŒ·ã«é¢ããŠ2 件ïŒå€èª¿ã«é¢ããŠã2件èšèšããïŒäœæ§æèŠã®å¢åŒ·ã«é¢ããŠã¯ïŒç¬¬äžã«ããŒã¿ãªã¹ã€ããã®å転ã«äŒŽãã«ãã«ããšãã觊èŠã»åèŠãã£ãŒãããã¯ãã«ãã«ãæãã«çç®ããïŒãããèé¢ç¯ã«ä»äžããŠéåæã®äœæ§æèŠãé®®æåãïŒè
ç«ãŠäŒã姿å¢ã®æ瀺ãè©Šã¿ãïŒç¬¬3 ç« ïŒïŒç¬¬äºã«ïŒèªåè»é転ã«ãããã¢ã¯ã»ã«ããã«ã®æäœãè£å©ããããïŒããã«ã®è§åºŠãäžå®å€å€åãã床ã«ç¬éçãªã¯ãªãã¯æ¯åãå瀺ããããšã§ïŒããã«è§åºŠã®ææ¡èœååäžããã³æäœæ§åäžãè©Šã¿ãïŒç¬¬4 ç« ïŒïŒäœæ§æèŠã®å€èª¿ã«é¢ããŠã¯ïŒç¬¬äžã«æ§ã
ãªæ質ã®è¡çªæ¯åãåçŸããæžè¡°æ£åŒŠæ³¢ã¢ãã«ã«çç®ãïŒããã身äœéåã«åæãããŠå瀺ããããšã§èº«äœæ質æã®å€èª¿ãè©Šã¿ãïŒç¬¬5 ç« ïŒïŒããã«ããããããããŽã 人éãšãã£ãç¹æ®ãªãã£ã©ã¯ã¿ãŒã®äœæ§æèŠã®åçŸãç®æããïŒç¬¬äºã«ïŒãããããã£ã©ã¯ã¿ãŒã®ã¿ã«çç®ãïŒå®éã®ããããã«çããæ¯åå é床ãèšé²ã»ã¢ããªã³ã°ã»åçããææ³ã«ããããããã®å
éšæ§é ã«èµ·å ããäœæ§æèŠãŸã§åçŸããããšãè©Šã¿ãïŒç¬¬6 ç« ïŒïŒãŸãããããæäœéšã®ç·åçãªãªã¢ãªãã£åäžã®ããé«å質ãªèŠèŠã»èŽèŠåºæ¿ãçµã¿åãããããŒãã£ã«ãªã¢ãªãã£ã²ãŒã ãéçºããïŒãŸãäœæ§æèŠã®æäœãããåºç¯å²ã§è¡ãããïŒæ¢åã®è§ŠèŠãã£ã¹ãã¬ã€ã®åé¡ç¹ãèå¯ãïŒèº«äœåºç¯å²ã«åçãªè§ŠèŠåºæ¿ãå瀺ãã觊èŠãã£ã¹ãã¬ã€ãéçºããïŒç¬¬7 ç« ïŒïŒæåŸã«æ¬ç 究å
šäœã®ãŸãšããšçµè«ãè¿°ã¹ïŒä»åŸã®å±æã瀺ãïŒç¬¬8 ç« ïŒïŒé»æ°é信倧åŠ201
Modern Applications of Electrostatics and Dielectrics
Electrostatics and dielectric materials have important applications in modern society. As such, they require improved characteristics. More and more equipment needs to operate at high frequency, high voltage, high temperature, and other harsh conditions. This book presents an overview of modern applications of electrostatics and dielectrics as well as research progress in the field
èªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçº
ç©äœã«è§Šããéã®äœéšãåçŸãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã¯ããŒãã£ã«ãªã¢ãªãã£ã®äœéšã®è³ªãåäžããæ段ãšããŠæ³šç®ãããŠããïŒäžæ¹ã§ïŒèŠèŽèŠãšæ¯èŒããŠè§ŠèŠç 究ã®æŽå²ã¯æµ
ãïŒè³ªã®é«ã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã¯çºå±éäžã§ãããšãããïŒè§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã®ã¢ãããŒãã«çŸè±¡ãå¿ å®ã«åçŸããåå®çãªã¢ãããŒããããïŒãããïŒåå®çãªè§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã¯çŸè±¡ã®åçŸæ§ã¯é«ããã®ã®ïŒçŸå®ã«èµ·ããããäœéšããè¡šçŸã§ããªãïŒãŸãïŒèŠèŽèŠãšæ¯èŒããŠè§ŠèŠããåŸãããæ
å ±ã¯äžæçã§ããïŒæèŠçµ±åã«ãããŠå£äœã«æ±ãããŠããŸãïŒä»¥äžããïŒçŸè±¡ã®åçŸæ§ãå¿
ãããå¿
èŠãªãïŒå¹
åºãè¡šçŸãäœéšã®æçããéèŠã§ãããšã³ã¿ãã€ã³ã¡ã³ãçã§ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®å¿çšãèããéïŒåå®çãªã¢ãããŒããšã¯å¥ã®ã¢ãããŒããå¿
èŠã§ãããšãããïŒããã«å¯ŸãïŒèè
ã¯æŒ«ç»ãã¢ãã¡ãŒã·ã§ã³ã§çšããããèªåŒµè¡šçŸã®æŠå¿µã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«é©çšããããšãèããïŒæŒ«ç»ãã¢ãã¡ãŒã·ã§ã³ã§ã¯çŸå®ãåºã«å€§ããã«æããšããèªåŒµè¡šçŸãçšããŠïŒèŠèŽè
ã«éçŸå®çã§ã¯ããããã£ãšãããããšããå°è±¡ïŒæ¬è«æã§ã¯å®ææ§ãšå®çŸ©ïŒãäžããïŒæ¬è«æã¯èªåŒµè¡šçŸã®æŠå¿µã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«é©çšããããšã§ïŒåçŸæ§ã¯é«ããªããå®ææ§ã«åªãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ãèšèšã»éçºããããšãç®çãšããïŒããã«ããïŒè§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®è¡šçŸã®å¹
ã®æ¡åŒµïŒããã³åãããããå®ææ§ã®ãããäœéšã®å®çŸãæåŸ
ããïŒãŸãïŒèšèšã»éçºãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ãç·æ¬ããããšã§èªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®å®ææ§ãåäžãããããã®èŠä»¶ãæããã«ããïŒæ¬è«æã§ã¯ïŒãŸãèªåŒµè¡šçŸã®è«çæ§é ãèŠãã ãïŒ3ã€ã®è«çã¢ãã«ãèšå®ããïŒæ¬¡ã«ïŒ3ã€ã®ã¢ãã«ãåºã«8ã€ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«é¢ããç 究ã«ã€ããŠè¿°ã¹ãïŒåç 究ã§ã¯ïŒåå¥ã®ç 究èæ¯ããã³ç®çã«ã€ããŠè¿°ã¹ïŒè§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ãå®è£
ãïŒç®çã«åããè©äŸ¡ã«ãã£ãŠåã
ã®æå¹æ§ãæ€èšŒããïŒãããŠïŒèšèšã»éçºãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ããã³ã¢ãã«ãç·æ¬ãïŒå®ææ§ãåäžãããããã®èŠä»¶ãæããã«ããïŒæ¬è«æã¯å
š6ç« ããæ§æããïŒå
容ã®èŠæšã¯ä»¥äžã®ãšããã§ããïŒç¬¬1ç« ã§ã¯ïŒãŸã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã泚ç®ãããããã«ãªã£ãèæ¯ã«ã€ããŠè¿°ã¹ïŒåå®çã¢ãããŒãã®éçã«ã€ããŠææããïŒæ¬¡ã«ïŒæŒ«ç»ãã¢ãã¡ãŒã·ã§ã³ã«èŠãããèªåŒµè¡šçŸã«ã€ããŠè¿°ã¹ïŒæ¬è«æã®ç®çãšããŠãèªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºãããã³ãèªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®å®ææ§ãåäžããããã®èŠä»¶ãæããã«ããããšããèšå®ããïŒãããŠïŒèªåŒµè¡šçŸã®è«ççãªåé¡ãè¡ãïŒè§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã®æéãšããããã®3ã€ã®ã¢ãã«ïŒä»£æ¿ã¢ãã«ïŒå€èª¿ã¢ãã«ïŒéç³ã¢ãã«ïŒãèŠãã ãïŒä»£æ¿ã¢ãã«ã§ã¯ïŒæèŠAãå¥ã®æèŠBã«çœ®æããŠæ瀺ããïŒå€èª¿ã¢ãã«ã§ã¯ïŒæèŠAã«æäœkãå ããŠå€èª¿ãæ瀺ããïŒéç³ã¢ãã«ã§ã¯ïŒæèŠAã«å¥ã®æèŠBãæ瀺ããŠéç³ããïŒç¬¬2ç« ã§ã¯ïŒæ¬è«æã§æ±ã觊èŠã«ã€ããŠå®çŸ©ããïŒè§ŠèŠã«é¢ããåºç€çãªççåŠçïŒå¿çåŠçç¥èŠã«é¢ããŠè¿°ã¹ïŒæ¬¡ç« 以éã§è¿°ã¹ã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«ãããŠå¿
èŠãªç¥èŠãå
±æããïŒç¬¬3ç« ã§ã¯ïŒä»£æ¿ã¢ãã«ã«åºã¥ãã2ã€ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«ã€ããŠè¿°ã¹ãïŒ1ã€ç®ã¯èéšã®å±äŒžéåã«äŒŽã£ãŠããŒã¿ãªã¹ã€ãããåããæã«çããåšæçãªè§ŠèŠãã£ãŒãããã¯ïŒã«ãã«ãæïŒãæ瀺ããã«ãã«ãææ瀺è£
眮ã®èšèšã»éçºã§ããïŒæ¬è£
眮ã«ãã£ãŠèŠèŠçéåç¥èŠãå°é£ãªç¶æ³ã«ãããŠè§ŠèŠçéåç¥èŠãæ¡åŒµããããšã§ãŠãŒã¶ã®èº«äœå§¿å¢ã®å¶åŸ¡ã®åäžãè©Šã¿ãïŒ2ã€ç®ã¯èŠèŠããæ質æãæ瀺ããææ³VisualVibrationã®èšèšã»éçºã§ããïŒæ¬ææ³ã§ã¯ïŒçŸå®ã§ã¯èŽèŠã»è§ŠèŠã§æããããé«åšæ³¢æ°æ¯åãèŠèŠã§æããããããã«å€èª¿ããŠç䌌觊èŠæ瀺ãè¡ãïŒæ¬ææ³ã®ã±ãŒã¹ã¹ã¿ãã£ãšããŠç©äœãå©ããæã«çããæ¯åãåãäžãïŒèŠèŠçãªæ¯åæ瀺ã«ããæ質ææ瀺ãè©Šã¿ãïŒç¬¬4ç« ã§ã¯ïŒå€èª¿ã¢ãã«ã«åºã¥ãã3ã€ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«ã€ããŠè¿°ã¹ãïŒ1ã€ç®ã¯å©ãåäœã«å¯ŸããŠæ¯åæ瀺ããããšã§ã¿ããã¹ã¯ãªãŒã³ãç°ãªãæ質ã«ãªã£ããã®ãããªäœéšãæäŸããHaCHIStick&HACHIStackã®èšèšã»éçºã§ããïŒæ¬ã·ã¹ãã ã¯æéå¿çæ§ã«åªããŠããïŒå©ããç¬éã«æ¯åæ瀺ãå¯èœã§ããïŒãã®ããïŒãŠãŒã¶ã«ãšã£ãŠã¯å©ãã察象ã®æ質ãå€ãã£ãããã«æããããïŒ2ã€ç®ã¯æ¯ç£šãé³ãå€èª¿ããŠæ瀺ããããšã§æ¯ç£šãã®å¿«æããã³éææãå¢åŒ·ããæ¡åŒµæ¯ãã©ã·ã®èšèšã»éçºã§ããïŒçŸç®çŽé¯èŠïŒæãæŠã£ãéã«çããé³ã®é«åšæ³¢æåã匷調ãããšæã®ã²ãã也ããçŽã®ããã«æããããïŒãå©çšããŠæ±ããŠããïŒçŸåãããŠãããšãã£ãæ¯ã®ç¶æ
ãç䌌çã«åçŸãïŒæ¯ç£šãã®äœéšãæ¡åŒµããïŒ3ã€ç®ã¯åŸ³å©ãåŸããéã«å
容液ã®æµåºã«ãããã¯ãã¯ãšããæ¯åïŒãã¯ãã¯æïŒæ瀺ã®èšèšã»éçºã§ããïŒå®éã«åŸ³å©ãã液äœãæµåºããéã«çããæ¯åãèšæž¬ïŒã¢ããªã³ã°ãïŒå®éã«æ¶²äœã泚ãããšãªããã¯ãã¯æãåçŸããïŒå®éšçã«æ§ç¯ããæ¯åã¢ãã«ãããšã«ïŒç²æ§æããã³æ®éæãåçŸããïŒç¬¬5ç« ã§ã¯ïŒéç³ã¢ãã«ã«åºã¥ãã3ã€ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«ã€ããŠè¿°ã¹ãïŒ1ã€ç®ã¯åç« ã§è¿°ã¹ããã¯ãã¯æãå®éã®ãããããã«ã§æ¶²äœã泚ãåäœã«éç³ãããã¯ãã¯æéç³ã®èšèšã»éçºã§ããïŒãã¯ãã¯æéç³ã«ãã泚ããã液äœã®éã®é¯èª€å¹æã瀺ãïŒé£²é£äœéšã®è§ŠèŠçæŒåºã®å¯èœæ§ã瀺ãïŒ2ã€ç®ã¯é¢ç¯éšã®å±äŒžéåã«äŒŽã£ãŠæ¯åãæ瀺ããããšã§é¢ç¯ãç°ãªãæ質ã«ãªã£ããã®ãããªäœéšãæäŸããJointonationã®èšèšã»éçºã§ããïŒæ¬ã·ã¹ãã ã«ãã£ãŠïŒãµã€ãšã³ã¹ãã£ã¯ã·ã§ã³ã«ç»å ŽãããŽã 人éãããããã«èŠèŽèŠã«å ã觊èŠçã«ãå€èº«ãããã®ãããªäœéšãæäŸããïŒ3ã€ç®ã¯ã¿ããã¹ã¯ãªãŒã³äžã§ã®ãŠãŒã¶ã®åäœã«å¯ŸããŠåŒåæ瀺ãè¡ãè£
眮VacuumTouchã®èšèšã»éçºã§ããïŒæ¬è£
眮ã¯åŒåæ瀺ã«ãã£ãŠã¿ããã¹ã¯ãªãŒã³äžã«æ©æŠæãéç³ããïŒããã«ããäŸãã°ã¿ããã¹ã¯ãªãŒã³äžã«æ¬äŒŒçãªåŒã£ããããã€ããã ãïŒãŠãŒã¶ã®æäœã®è£å©ãè¡ãïŒç¬¬6ç« ã§ã¯ïŒ3ã€ã®èªåŒµè¡šçŸã®è«çã¢ãã«ããã³8ã€ã®è§ŠèŠã€ã³ã¿ã©ã¯ã·ã§ã³ã«é¢ããç 究ãç·æ¬ããïŒåã
ã®ç 究ãåè©äŸ¡ãïŒèª²é¡ãæŽçããããšã§èªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®å®ææ§åäžã®ããã®èŠä»¶ãæããã«ããïŒãããŠïŒæ¬è«æã®ææãåºã«èªåŒµè¡šçŸã«åºã¥ãã觊èŠã€ã³ã¿ã©ã¯ã·ã§ã³ã®èšèšã»éçºã«é¢ããç 究ã®ä»åŸã®å±æã«ã€ããŠè«ããïŒé»æ°é信倧åŠ201