Abstract
The purpose of this paper was to determine the control parameter of the wheeled walking assist device. Three healthy young males participated in our primitive experiments. Subjects were asked to walk with or without two walking assist devices in their self-determined pace. Although each walking devices were kept same speed throughout gait cycle, subjects' velocity showed bi-phasic pattern. The velocities of the walking assist device were higher than the subjects at both the mid stance and swing phase. From these results, we concluded that though both the distance between subjects and the walking assist devices and the force vector in the handle were suitable for control parameter, the direction of the force vector was the most relevant.
