Design Support Methods for Comfortability in Riding of the Wheelchair Transporting Apparatus (2nd Report, Reasoning Model and Criteria of Comfortability in Riding)

In the present study, due to improving comfortability in riding of the Wheelchair Transporting Apparatus, we analyzed the relation between vibration and evaluation for the vibration. In the exciting experiment, the vibration on the floor and human body was measured by acceleration sensors, and the evaluation of nine parameters for the vibration was measured by SD method. First, we analyzed the relation using the correlation analysis. It is found that the vibration on upper part of torso, especially in up-down direction, correlates with the evaluation of comfortability. Secondly, we clarified the relation between the vibration and the evaluation by multiple regression analysis. As a result, we obtained reasoning model and criteria of comfortability in riding.