Stand-up assist system for elderly using coordinated motion with a bed

A robotic stand-up assist system from a bed, which utilizes coordinated motion with the bed, has been developed. Through the steps of the research and development process, assisting the motion trajectory during the stand-up motion is found to be more important, rather than assisting the power to stand-up. Natural trajectory for the stand-up motion, with the help of the movement of the bed, has been thus studied, and evaluated from joint burden and stability viewpoints.