抄録
The Profhand is a cycling chair that is used for mobility and rehabilitation of the disabled. This study aims to improve the performance of the Profhand in outdoor environments. The Profhand has problems with climbing over steps and slopes which are commonly found in roadways and sidewalks. To solve this problem, this research intends to implement a power assist system for the Profhand. A power assist system also has the added benefit of increasing the distance the user can travel. In this paper, improvement of the structure for climbing over steps is presented.