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김상연(Sang-Youn Kim) 한국HCI학회 2009 한국HCI학회 학술대회 Vol.2009 No.2
본 논문에서는 모바일기기에 적용가능한 햅틱 액츄에이터들을 제시한다. 모바일 디바이스에서 햅틱감각을 전달하기 위하여 동작주파수, 자극의 세기 뿐 아니라 크기나 전력소모까지도 고려해야 한다. 그러므로 현재까지 많은 모바일 기기에서는 햅틱감각을 생성하기 위하여 크기가 작고 쉽게 장착가능한 진동모터를 많이 사용하고 있다. 본 논문에서는 진동 모터와 다양한 햅틱 감각을 생성할 수 있는 햅틱 액츄에이터들에 대하여 소개한다. This paper addresses a haptic actuator which can be applied to mobile devices. For haptic feedback in mobile devices, we have to consider not only stimulating force and frequency but also the size and the power consumption of a haptic module. Thus far, vibration motors have been widely used in mobile devices to provide tactile sensation. The reason is that a vibration motor is small enough to be inserted into a mobile device. This paper addresses vibrotactile actuators and other haptic actuators which can generate a wide variety of tactile sensations.
김상연(Sang-Youn Kim),김동구(Dong-Gu Kim),윤성률(Sungryul Yun),경기욱(Ki-Uk Kyung),김재환(Jaehwan Kim) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.11
This paper suggests a new film-type haptic actuator based on cellulose acetate electro-active paper. Conventional tiny haptic actuators in mobile devices can create vibrotactile sensation at only near resonant frequency. The strategy of operating near the resonant frequency, however, brought a new issue for creating vibrotactile sensation which can be strong enough to feel in arbitrary frequency. Another problem is that the size of the conventional actuator is not small enough to be embedded into slim mobile devices. In order to achieve these issues, we propose a thin and tiny actuator based on a cellulose acetate material charged with an electric potential. The motion of the actuator can be a concave or a convex by controlling a polarity of both charged membranes and the actuator performance can be modulated by increasing level of biased electric potential.