電磁抵抗型センサーレスセミアクティブダンパ

（キャパシタによる影響）

抄録

In general, semiactive damper has high vibration control performance by controlling passive elements like damping coefficient. The damper requires a power supply and sensors, when there is a power fail under some trouble, it cannot be controlled and would be malfunction. The authors have developed an electromagnetic type sensor less semiactive damper. This type of damper has variable damping force by using a motor due to the braking torque, and the damping coefficient can be switched by controlling the resistance of terminal circuit of the motor. In previous paper, a solid-state relay and rectifier circuit was inserted to the terminal, and the damping coefficient can be automatically switched without any sensors instead of the motor generated. In this paper, to investigate the effect of a capacitor connected to the terminal circuit in parallel, resisting force characteristics of the semiactive damper was introduced, and switch timing of the damping coefficient was confirmed theoretically and experimentally.