Lever Mechanism for Diaphragm-Type Vibrators to Enhance Vibrotactile Intensity

IF 2.4 3区计算机科学 Q2 COMPUTER SCIENCE, CYBERNETICS IEEE Transactions on Haptics Pub Date : 2024-01-16 DOI:10.1109/TOH.2024.3354253

Taku Hachisu;Masayuki Kajiura;Toshihiro Takeshita;Yusuke Takei;Takeshi Kobayashi;Masashi Konyo

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Abstract

Thin and light vibrators that leverage the inverse piezoelectric effect with a diaphragm mechanism are promising vibrotactile actuators owing to their form factors and high temporal and frequency response. However, generating perceptually sufficient displacement in the low-frequency domain is challenging. This study presents a lever mechanism mounted on a diaphragm vibrator to enhance the vibrotactile intensity of low-frequency vibrotactile stimuli. The lever mechanism is inspired by the tactile contact lens consisting of an array of cylinders held against the skin on a sheet that enhances micro-bump tactile detection. We built an experimental apparatus including our previously developed thin-film diaphragm-type vibrator, which reproduced the common characteristic of piezoelectric vibrators: near-threshold displacement (10 to 20 μm) at low frequency. Experiments demonstrated enhanced vibrotactile intensity at frequencies less than 100 Hz with the lever mechanism. Although the arrangement and material of the mechanism can be improved, our findings can help improve the expressiveness of diaphragm-type vibrators.

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用于膜片式振动器的杠杆机制，以增强振动触觉强度。

利用反压电效应和膜片机制的轻薄振动器因其外形尺寸、高时间和频率响应而成为前景广阔的振动触觉致动器。然而，要在低频域产生足够的感知位移是一项挑战。本研究提出了一种安装在膜片振动器上的杠杆机构，以增强低频振动触觉刺激的振动触觉强度。杠杆机制的灵感来自触觉接触透镜，该透镜由贴在皮肤上的圆柱阵列组成，可增强微凹凸触觉检测。我们建立了一个实验装置，其中包括我们之前开发的薄膜隔膜型振动器，它再现了压电振动器的共同特征：低频下接近阈值的位移（10 至 20 μm）。实验表明，杠杆机构在频率低于 100 Hz 时可增强振动触觉强度。虽然机构的布置和材料还可以改进，但我们的发现有助于提高膜片型振动器的表现力。

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来源期刊

IEEE Transactions on Haptics COMPUTER SCIENCE, CYBERNETICS-

CiteScore

5.90

自引率

13.80%

发文量

109

审稿时长

>12 weeks

期刊介绍： IEEE Transactions on Haptics (ToH) is a scholarly archival journal that addresses the science, technology, and applications associated with information acquisition and object manipulation through touch. Haptic interactions relevant to this journal include all aspects of manual exploration and manipulation of objects by humans, machines and interactions between the two, performed in real, virtual, teleoperated or networked environments. Research areas of relevance to this publication include, but are not limited to, the following topics: Human haptic and multi-sensory perception and action, Aspects of motor control that explicitly pertain to human haptics, Haptic interactions via passive or active tools and machines, Devices that sense, enable, or create haptic interactions locally or at a distance, Haptic rendering and its association with graphic and auditory rendering in virtual reality, Algorithms, controls, and dynamics of haptic devices, users, and interactions between the two, Human-machine performance and safety with haptic feedback, Haptics in the context of human-computer interactions, Systems and networks using haptic devices and interactions, including multi-modal feedback, Application of the above, for example in areas such as education, rehabilitation, medicine, computer-aided design, skills training, computer games, driver controls, simulation, and visualization.