A wheelchair with omni-directional wheel is introduced in this article. Two kinds of omni-directional wheel, Mecanum wheel and Trans wheel, are illustrated and their motion principles were analyzed. Virtual Reality Modeling Language (VRML) is adopted to implement the real-time customization and motion simulation. In the real-time customization process, the color of some parts of the wheelchair can be altered, and the shape of components can also be replaced via the customization panel. By using this methods…