Skin nonlinearities and their effect on user perception for rotational skin stretch
Skin nonlinearities and their effect on user perception for rotational skin stretch
复制标题
皮肤非线性及其对旋转皮肤拉伸的用户感知的影响
DOI：
10.1109/haptic.2010.5444675
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Cutkosky
中科院分区：
文献类型：
--
作者：
P. Shull;Karlin Bark;M. Cutkosky
鉴于皮肤是一种非线性，各向异性和粘弹性材料，我们感兴趣的是探索皮肤的机械性能和皮肤拉伸感知之间的关系，对于应用于皮肤上的用户的四肢的旋转位移的情况下。首先用10名幼稚受试者进行研究，以表征皮肤相对于施加的旋转的非线性刚度，随后表征皮肤粘弹性响应和滞后。尽管受试者之间存在很大的差异，但当通过每个受试者的最大扭矩对结果进行归一化时，在低速和高速下，受试者之间的扭矩/位移结果相当一致，并且可以用三阶多项式拟合。对于大约一半的受试者，一个类似的非线性是可辨别的感知与实际旋转;其他受试者产生几乎线性的结果，在整个范围内的积极和消极的旋转。皮肤中的粘弹性和滞后效应也很明显。然而，虽然受试者可以清楚地区分缓慢和快速的运动，所施加的运动的速度不会显着影响他们的旋转感知。
Given that skin is a nonlinear, anisotropic and viscoelastic material, we are interested in exploring the relationship between skin mechanical properties and skin stretch perception, for the case of rotational displacements applied to the skin on a user's limbs. Studies were conducted with 10 naive subjects first to characterize the nonlinear stiffness of the skin with respect to applied rotations and subsequently to characterize the skin viscoelastic response and hysteresis. Despite substantial subject-to-subject variability, when results are normalized by each subject's maximum torque, the torque/displacement results are fairly consistent across subjects, at low and high speeds, and can be fit with a third order polynomial. For roughly one half of the subjects, a similar nonlinearity is discernible in the perceived versus actual rotation; other subjects produced nearly linear results across the range of positive and negative rotations. Viscoelastic and hysteresis effects in the skin were also evident. However, while subjects can clearly distinguish between slow and rapid movements, the speed of the applied motion does not significantly affect their perception of rotation.