Motion Display in the Treadport Locomotion Interface

摘要IIS-9908675Hollerbach，美国犹他大学，$75,000-12毫秒。Treadport Locomotion接口中的运动显示代表了一个新的领域，在这个早期阶段，关于最佳方法有许多不确定的因素。这项探索性研究涉及坡度、惯性和打开基于跑步机的运动界面Sarcos Treadport的机械显示。Sarcos Treadport包括一个线性倾斜跑步机，一个活动的机械系绳，以及一个洞穴状的视觉显示器。主动机械系绳是Treadport的独特之处，它测量用户的位置并向用户施加轴向力。尽管跑步机是一个线性设备，但研究目的是证明，与视觉显示器耦合的机械系绳为转向控制提供了合理的基础。主动系绳的作用力能力提供了独特的能力来模拟跑步过程中的惯性力，否则，由于使用者是静止的，这些惯性力是不存在的。履带倾斜机构通常速度太慢，无法显示快速的坡度变化。通过拉动使用者模拟上山行走和推动下坡行走，主动机械系绳可以模拟重力。PI建议进行一系列生物力学、建模和心理物理研究，以演示所提出的使用主动机械系绳来显示转向、惯性力和坡度的运动。目的是证明在直线跑步机上添加机械系绳是一种有用和合理的运动界面方法，并且从用户的角度来看，所提出的运动显示方法具有一定的科学基础和有效性。

Abstract IIS-9908675Hollerbach, JohnUniversity of Utah$75,000 - 12 mos.Motion Display in the Treadport Locomotion InterfaceLocomotion interfaces represent a new field, and at this early stagethere are many uncertainties about the best approaches. This exploratoryresearch is concerned with the mechanical display of slope,inertia, and turning on a treadmill-based locomotion interface, the Sarcos Treadport. The Sarcos Treadport comprises a linear tilting treadmill, an active mechanical tether, and a CAVE-like visual display. The active mechanical tether, which is the unique aspect of the Treadport,measures user position and applies axial forces to the user.Although the treadmill is a linear device, the research aims to show that thetether coupled to the visual display provides a reasonable basis forturning control. The force-producing capability of the active tetheroffers the unique ability to simulate inertial forces during running,which are otherwise absent because the user is stationary. Treadmilltilt mechanisms are typically too slow to display rapid slope changes.By pulling on the user to simulate uphill walking and pushing fordownhill walking, the active mechanical tether can simulate gravity.The PIs propose to conduct a series of biomechanical, modeling, andpsychophysical studies to demonstrate the proposed motion displays forturning, inertial force, and slope using an active mechanical tether.The objective is to show that adding a mechanical tether to linear treadmills is a useful and reasonable approach towards locomotion interfaces, and that the proposed locomotion display approaches have some scientific basis and are effective from a user standpoint.