| 摘要 |
PURPOSE:To reduce the vibration of a structural body with a limited controlling force even at the time of a high vibration level by causing a constant controlling force corresponding to the polarity of the vibration speed of the structural body to work between the structural body and a movable mass. CONSTITUTION:When a structural body 1 is excited by an external force, it is sensed by an accelerometer 7. After being converted to the vibration speed by an integrator 8a and the polarity of the vibration speed is determined by a polarimeter 8b, a voltage, positive or negative depending on the polarity, is generated by a voltage generator 8c. It is fed to a power amplifier 8d to cause an actuator 3 to exert a constant controlling force between a movable mass and the structural body 1. Thus, the vibration of the structural body 1 is damped. |
