Abstract
Human motion-assist and rehabilitation systems such as orthoses, prostheses, human assist systems, etc. have been developed to make the human life better. Especially, the studies on the human assist systems such as power-assist robots and rehabilitation robots are actively performed in these days. Although simple motion generation systems such as CPM (continuous passive motion) systems are widely used for rehabilitation at present, rehabilitation robots are expected to realize more advanced rehabilitation. Many kinds of rehabilitation robots have been developed for upper-limb and lower-limb rehabilitation. Human motion-assist robots are also expected to help daily motion of physically weak persons. In this paper, state of the art technology of motion-assist and rehabilitation systems is explained and their future technology is prospected.