• Title/Summary/Keyword: 정전기 액추에이터

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Development of high-power haptic vibration actuator module and interface based on bidirectional electrostatic force driving structure (양방향 정전기력 구동 구조에 기반한 고출력 햅틱 진동 액추에이터 모듈 및 인터페이스 개발)

  • Kim, Jae-Ik;Lee, Jae-Kyung;Park, Young-Hwan;Seo, Jeong-Tae;Yang, Tae-Heon
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.1
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    • pp.662-667
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    • 2021
  • Vibrotactile feedback is a major function of the latest touch displays, which greatly improves the user's operability and immersion when interacting with the interface on the screen. In this study, we propose a vibrotactile actuator suitable for mounting on the back side of a mid- to large-sized display because it can generate a strong vibration output by applying an electrostatic force-based mechanism and can be manufactured in a thin flat panel type. The proposed actuator was developed in a structure capable of amplifying the vibration force by alternating up and down with electrostatic force by the upper and lower electrodes that are spaced apart from the electrically grounded mass suspended from a radial leaf spring. As a result of the performance evaluation, the developed bar-type module with two built-in actuators showed excellent vibration output of up to 3.3 g at 170 Hz, confirming the possibility of providing haptic feedback in medium and large touch displays.