부제 : ABSTRACT INTRODUCTION EXPERIMENTAL TRAILER EVALUATION TEST CONCLUSION REFERENCES
A trailer equipped with a prove radar is used to examine cavities which exist underneath asphalt pavement. The radar is required to secure the clearance to the road surface. However, when the spring rate of the suspension is set high to prevent the collision to the road surface, the vertical acceleration caused by uneven road is increased. It causes the breakdown of the radar. In this study, the electromagnetic damper utilizing the torque of DC motor as the damping force realizes various damping characteristics. The vertical acceleration and the clearance between the trailer and the road surface were evaluated by experiments with changing the damping characteristics of the electromagnetic damper.