A Film-Type Vibrotactile Actuator for Hand-Held Devices
A Film-Type Vibrotactile Actuator for Hand-Held Devices
复制标题
用于手持设备的薄膜型振动触觉执行器
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Ki
中科院分区：
文献类型：
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作者：
Sang;Ki;Jaehwan Kim;Ki
用于诸如移动的设备之类的小型消费电子产品的振动触觉致动器已被广泛用于向用户传达触觉感觉。振动触觉致动器中最重要的事情之一是以薄致动器的形式开发，这种致动器可以轻松嵌入到移动的设备中，并为用户提供宽频带的振动触觉信号。因此，本文提出了一种薄膜型触觉致动器，其目的是在移动的设备中向用户传达高频带宽的振动触觉信息。为此，基于醋酸纤维素材料设计并构造了一种产生触觉的振动触觉致动器。带有电势的醋酸纤维素材料在交流电压输入下可以产生振动。研究发现，通过控制两个带电膜的极性，致动器的运动可以具有凹或凸的形状，并且致动器的性能可以通过增加偏置电势的水平来调制。实验清楚地表明，所提出的致动器产生足够的输出力，以刺激人体皮肤具有大的频率带宽，并模拟各种振动触觉的感觉给用户。
Vibrotactile actuators for small consumer electronic products, such as mobile devices, have been widely used for conveying haptic sensation to users. One of the most important things in vibrotactile actuators is to be developed in the form of thin actuator which can be easily embedded into mobile devices and to provide vibrotactile signals with wide frequency band to users. Thus, this paper proposes a thin film type haptic actuator with an aim to convey vibrotactile information with high frequency bandwidth to users in mobile devices. To this end, a vibrotactile actuator which creates haptic sensation is designed and constructed based on cellulose acetate material. A cellulose acetate material charged with an electric potential can generate vibration under the AC voltage input. It is found that the motion of the actuator can have concave or convex shape by controlling a polarity of both charged membranes and the actuator performance can be modulated by increasing level of biased electric potential. The experiment clearly shows that the proposed actuator creates enough output force to stimulate human skin with a large frequency bandwidth and to simulate various vibrotactile sensations to users.