The purpose of this study is to develop power assist device, which is easy to use like normal clothes and does not restrict movement, and portable air supply system. User can be assisted by wearing this one on which the pneumatic soft actuator, which has a high power weight ratio and a light weight, is put. The developed air supply system, which can retrieve compressed air from an actuator, is effective to decrease energy consumption. This air supply system is effective to downsize whole system. In this paper, outlines of the developed power assist wear without exoskeletons, and portable air supply system are described.
To design comfortable clothing in hot environment, heat and moisture transfer in human-clothing-environment systems considered sweating responses must be evaluated. In this study, the regional sweat rate and evaporation was measured using wearable hygrometers and the computational fluid dynamics (CFD) analysis in clothing microclimate based on the measured value was conducted. The results of the sweat evaporation measurement were validated by body weight loss. To estimate the air temperature, velocity, and relative humidity distribution in and around clothing, the simplified cylinder model for torso of adult male wearing single-layered clothing under natural convection was examined. The results of CFD analysis showed that the air tended to rise and drift toward a neck slit by human heat generation. Influential factors on moisture transfer characteristics of sweating at abdomen were clarified. These results may become useful database for clothing design and prediction of thermal comfort.