Perceived Intensities of Normal and Shear Skin Stimuli Using a Wearable Haptic Bracelet
Perceived Intensities of Normal and Shear Skin Stimuli Using a Wearable Haptic Bracelet
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DOI：
10.1109/lra.2021.3140132
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发表时间：
2019-11
影响因子：
5.2
通讯作者：
M. Sarac;Tae Myung Huh;Hojung Choi;M. Cutkosky;Massimiliano Di Luca;A. Okamura
中科院分区：
文献类型：
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作者：
M. Sarac;Tae Myung Huh;Hojung Choi;M. Cutkosky;Massimiliano Di Luca;A. Okamura
我们的目的是提供与虚拟物体的有效互动，努力缺乏虚拟和现实世界接触的共同点，同时利用相对较大的皮肤区域和易于安装在前臂上。在第一个研究中使用的触觉设备在虚拟操纵过程中的正常和剪切方向上的触觉反馈的影响。与剪切位移相比，反馈由正常位移组成时，虚拟对象的值也评论说，他们可以比剪切更容易检测到正常提示，这促使我们执行第二项研究以找到主观平等点（PSE）在正常和剪切刺激之间。我们的结果表明，剪切刺激需要更大我们的触觉手镯。在用户的皮肤上。
Our aim is to provide effective interaction with virtual objects, despite the lack of co-location of virtual and real-world contacts, while taking advantage of relatively large skin area and ease of mounting on the forearm. We performed two human participant studies to determine the effects of haptic feedback in the normal and shear directions during virtual manipulation using haptic devices worn near the wrist. In the first study, participants performed significantly better while discriminating stiffness values of virtual objects when the feedback consisted of normal displacements compared to shear displacements. Participants also commented that they could detect normal cues much easier than shear, which motivated us to perform a second study to find the point of subjective equality (PSE) between normal and shear stimuli. Our results show that shear stimuli require a larger actuator displacement but less force than normal stimuli to achieve perceptual equality for our haptic bracelets. We found that normal and shear stimuli cannot be equalized through skin displacement nor the interaction forces across all users. Rather, a calibration method is needed to find the point of equality for each user where normal and shear stimuli create the same intensity on the user’s skin.