Basic Study for Haptic Interface System Considered Human Sensory Characteristics

触觉接口是人机接口系统所必需的，人机接口系统通过诸如皮肤和动觉感觉的体感信息在真实的世界和虚拟世界之间进行双边通信。触觉接口也是重要的，以增加由视觉和听觉显示器组成的网络空间的真实性。因此，我们进行了触觉接口的研究，其中涉及的触觉显示器的发展，提出质量的材料和可穿戴力显示器使用金属氢化物致动器。这些显示器是根据触觉感知的心理物理学实验设计的。首先，我们量化的JND（只是可察觉的差异）的人的空间知觉与触觉，并获得必要的和足够的控制精度，设计的触觉显示系统。其次，我们测量了受试者如何准确地将手指移动到虚拟物体通过透视头戴式显示器出现的确切位置。从实验中 ...更多信息 结果表明，手指（真实的物体）与虚拟物体之间存在深度差。虽然手指的位置与虚拟物体的位置并不一致，但存在一个范围，在该范围内，当触觉反馈呈现时，受试者没有感知到他们的手指与虚拟物体之间的差距。这种改进的原因似乎是视觉和触觉信息之间的整合。第三，我们得到了最佳的接触压力和扫描速度，以产生粗糙的感觉，当受试者被动触摸粗糙表面，并模拟粗糙表面使用盲文显示器，以设计一个触觉纹理显示，可以呈现粗糙的感觉。从实验结果中，它被发现，受试者可以感知粗糙度最容易当材料表面被按下，并扫到手指上在50 gf和40 mm/s在这两个真实的粗糙表面和模拟表面。此外，我们发现我们的触觉显示器可以呈现与#40（540 μm）和#190（83 μm）砂纸相同的粗糙感。最后，讨论了先进触觉接口及其在辅助技术领域中应用所需解决的问题。少

Haptic Interfaces are necessary for a human interface system with bilateral communication between the real world and the virtual world through somatosensory information such as cutaneous and kinesthetic senses. The haptic interfaces are also important to increase the reality of cyber space composed of visual and auditory displays. So we performed haptic interface studies which concerned the development of tactile displays for presenting quality of materials and a wearable force display using a metal hydride actuator. These displays were designed on the basis of psychophysical experiments regarding haptic perception. First, we quantified the JND (just noticeable difference) of human spatial perception with touch sense and obtained the necessary and sufficient control accuracy, for designing haptic display system. Second, we measured how accurately subjects moved their finger to the exact location where virtual object appeared through a see-through head-mounted display. From the experime … More ntal result, it was found that there were depth gaps between fingers (real objects) and virtual objects. Although the location of the finger did not correspond with that of the virtual, there was a range where the subjects did not perceive the gap between their fingers and virtual objects when tactile feedback presented. It would appear that the reason for this improvement was the integration between visual and tactile information. Third, we obtained the optimal contact pressure and sweeping velocity to produce the sensation of roughness when subjects passively touched rough surfaces and were simulated by rough surfaces using a Braille display in order to design a tactile texture display which may present the sensation of roughness. From the experimental results, it was found that subjects could perceive roughness most easily when material surfaces were pressed and sweep onto the finger at 50 gf and 40 mm/s in both real rough surfaces and simulated surfaces. Moreover we found that our tactile display could present roughness sensation as same as #40 (540 μm)〜#190 (83 μm) sandpaper did. Finally, we discussed some problems to be solved for the advanced haptic interface and for its application to the field of assistive technology. Less