脆弱な木造住宅用単純構造セミアクティブ制震システムの開発

抄録

The purpose of this paper is to design a semi-active vibration control system using a linear motion device for the fragile wooden house. The developed damping device has a simple structure that is composed a magnet-bar mover and stator coils. The device generates viscous damping force that changes in proportion to the velocity of the vibration, and it is electronically adjusted by PWM signal. It is driven with small electric power. The control system is designed based on a sliding mode control theory. To confirm the effectiveness of the system, the control experiments were carried using an experimental apparatus which composed with a wooden frame equipped with the developed semi-active damping system, and a vibratory equipment. As a result of experiments, the proposed system was able to decrease the vibration of wooden frame and to prevent the frame from collapsing. Furthermore, by applying the obtained control experimental data to the collapse simulation of a fragile wooden house, it was confirmed that the proposed system prevented the collapse of the house.