Analysis and evaluation of fall prevention assist related with the angle of trunk

Nowadays, decreasing birthrate and aging population become to be the serious social problem in Japan. Therefore, needs of assistive devices are more and more increasing. When people use such assistive devices, there is a risk that devices cost user excessive burden. So analysis and evaluation of motions and load of person who uses assistive devices are necessary. In this paper, a model to analyze the effect of external force applied to walking person by fall prevention robot is proposed. A way of suppressing human's lower limbs load in fall prevention assist is discussed through experiments.