Daido University

About: Daido University is a education organization based out in Nagoya, Japan. It is known for research contribution in the topics: Ultimate tensile strength & Proton exchange membrane fuel cell. The organization has 209 authors who have published 423 publications receiving 3223 citations.

An application of state feedback control to actual vehicle vibration suppression

Abstract: In this paper, the applicability of a vibration suppression control scheme is presented, based on the actual observable states using suspension stroke sensors to general gasoline engine vehicles. As the vibration suppression, an observer combined state feedback control is applied to suppress pitching and bouncing motion in vehicle bodies using gasoline engines. The proposed control has been experimentally evaluated by an actual gasoline engine driven vehicle in conditions of steady-state running.

Mitigation of pedestrian heat stress using parasols in a humid subtropical region.

Abstract: Concerns over heat illness have been an increasing social problem in humid subtropical regions. One measure for avoiding excessive heat stress in hot outdoor environments is the use of parasols or umbrellas. The advantage of parasols is that they are a mobile and inexpensive way to provide personal shade outdoors. The objectives of this study were to compare the wet-bulb globe temperature (WBGT) under parasols and at an unshaded point as a reference, and to quantify the reduction in WBGT from the use of parasols in a humid subtropical region. Measurements using three parasols of different colors and materials were conducted at the athletics field at Daido University, Nagoya, Japan, between 9:00 and 15:00 Japan Standard Time in August 2015. The WBGT was obtained at heights of 0.1 m (ankles), 1.1 m (abdomen), and 1.7 m (head) above ground, according to the measurement procedure described in ISO 7243. On a sunny and partly cloudy day, the use of a parasol lowered the average globe temperature by up to 6.2 °C, through blocking direct solar radiation. The average reduction in WBGT by the parasol was found to be 1.8 °C at head level in sunny conditions with solar radiation of over 800 W/m2. The reduction in WBGT at head level by the use of parasols in sunny conditions was greater than that in cloudy conditions. However, although parasols can reduce WBGT at the head level of the user regardless of solar radiation, they cannot reduce it at the level of the abdomen or ankles.