Motion Display in the Treadport Locomotion Interface

摘要IIS-9908675 Hollerbach，约翰犹他大学$75，000 - 12个月。Treadport运动接口中的运动显示运动接口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性。本探索性研究关注的是机械显示的斜率，惯性，并打开一个基于millimill的运动接口，Sarcos Treadport。Sarcos Treadport包括一个线性倾斜跑步机、一个主动机械系绳和一个类似CAVE的视觉显示器。 主动机械系绳是Treadport的独特之处，它可以测量用户的位置并向用户施加轴向力。虽然跑步机是一个线性设备，但研究旨在表明，系绳与视觉显示器的耦合为转向控制提供了合理的基础。 主动系绳的力产生能力提供了在跑步期间模拟惯性力的独特能力，否则由于用户是静止的而不存在惯性力。 跑步机的倾斜机制通常太慢，无法显示快速的坡度变化。通过拉用户来模拟上坡行走，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，以证明所提出的运动显示转向，惯性力，和斜坡使用一个积极的机械系绳。目的是要表明，增加一个机械系绳的线性mills是一个有用的和合理的方法对运动接口，并且所提出的运动显示方法具有一定的科学基础，并且从用户的角度来看是有效的。

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.