三相DCモータとリレーを用いた減衰力切替型電磁抵抗ダンパ

抄録

In general, a semiactive damper has high performance of vibration control compared to passive damper. The damper requires a power supply and sensors in order to adjust an optimized damping force for the damper, several condition of vibration systems, such kind of force, acceleration and displacement etc. The authors have developed an electromagnetic type sensor less semiactive damper. In previous paper, the sensor less semiactive damper that generates the electromagnetic damping force by using the generator instead of the speed sensor in order to obtain switchable damping and improve the vibration control effect without any sensors was developed. By connecting the terminal circuit of the generator with a resistor, rectifiers and a solid-state relay(SSR), the voltage from the generator rises when the speed exceeds a border of relay, causing the relay to close and the damping force to automatically switch. In this paper, a new electromagnetic type sensor less semiactive damper with brushless direct drive motor was developed. Three phase full-wave rectifier circuit and SSR are connected to the motor in terminal. Resisting force of the damper were measured and the experimental results were compared with the theoretical results, and effect using rectifier was confirmed.