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김휘재(Wheejae Kim),박노철(No-Cheol Park) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Haptic feedback technology, which has been widely applied to interactive touch surfaces recently, provides more information to users through tactile effects on the touch surface. In order to provide desired tactile effects to users through a touch screen, rendering an accurate and uniform vibration pattern at all touch positions of surface is a very important issue. The method using the frequency response function between the actuator excitation and the vibration response of the surface can obtain actuator driving signals for uniform vibrotactile rendering. Because this method uses different actuator driving signals for each touch position, each vibrotactile rendering radiates different acoustic sound from the surface. In this study, the sound radiation generated during vibrotactile rendering at each touch position was analyzed. In addition, the effect of the actuator configuration on sound radiation was analyzed.