Abstract
It is an important issue to develop an easy and high-performance electric wheelchair for the growing population of elderly people. If there is insufficient space in the indoor environment, it is difficult for a normal electric wheelchair to change direction and maneuver. It is important that the wheelchair can be moved in all directions with easy operation. In this research, a new type of all-directional electric wheelchair has been designed. This electric wheelchair consists of three motors to drive and to change the orientation of the wheels. With this wheelchair, it becomes possible to operate wheelchairs more easily without the use of special wheels. The drive units are encased inside of the body, therefore, there is the advantage of a lower risk of the wheel rolling over the user's feet.
