Department of Mechanical Engineering, Inha University, Yonghun-dong 253, Nam-gu, Incheon 402-751, Korea.
Sensors (Basel). 2011;11(3):2845-56. doi: 10.3390/s110302845. Epub 2011 Mar 2.
Virtual surface characteristics of tactile displays are investigated to characterize the feeling of human touch for a haptic interface application. In order to represent the tactile feeling, a prototype tactile display incorporating Magneto-Rheological (MR) fluid has been developed. Tactile display devices simulate the finger's skin to feel the sensations of contact such as compliance, friction, and topography of the surface. Thus, the tactile display can provide information on the surface of an organic tissue to the surgeon in virtual reality. In order to investigate the compliance feeling of a human finger's touch, normal force responses of a tactile display under various magnetic fields have been assessed. Also, shearing friction force responses of the tactile display are investigated to simulate the action of finger dragging on the surface. Moreover, different matrix arrays of magnetic poles are applied to form the virtual surface topography. From the results, different tactile feelings are observed according to the applied magnetic field strength as well as the arrays of magnetic poles combinations. This research presents a smart tactile display technology for virtual surfaces.
为了在触觉界面应用中模拟人类触感，研究了虚拟表面特性。为了再现触觉感受，开发了一种结合磁流变液的原型触觉显示器。触觉显示设备模拟手指的皮肤，感受接触的感觉，如顺应性、摩擦力和表面形貌。因此，触觉显示器可以为虚拟现实中的外科医生提供有关有机组织表面的信息。为了研究人类手指触摸的顺应性感觉，评估了在各种磁场下触觉显示器的法向力响应。还研究了触觉显示器的剪切摩擦力响应，以模拟手指在表面上的拖动动作。此外，应用不同的磁极矩阵阵列来形成虚拟表面形貌。结果表明，根据所施加的磁场强度以及磁极组合的阵列，可以观察到不同的触觉感受。这项研究提出了一种用于虚拟表面的智能触觉显示技术。
