Abstract
Many bridges had been constructed during the steep economic growth age. Presently, dealing with the deterioration of those bridges and maintaining them have become very important. Using robots for the bridge inspection to aim at the labor saving and lowering the cost is hoped for the management and maintenance of many old bridges because the conventional method will intensify the strains on the economy. We had created a four-wheel driving robot for trial purposes that can inspect cracks and corrosion in steel bridge substructures. In this study, we added the improvement to the controller of the robot. We confirmed that the running ability of new robot is better than that of conventional control robot when experiments of running where conducted at right angled routes. Consequently, we found the success method of running.
