| 摘要 |
<p>PURPOSE:To obtain an elevated line movement device having a damping function capable of damping the vibration quickly even if the vibration due to a gust of wind, etc., is generated by providing a driving gear to drive a counterweight in the specified direction depending on the vibration command signal from a control device. CONSTITUTION:The time T1 is found which ranges from the point of time the rotating angular velocity of a movement device main body 1a becomes zero to the time when the rotating angular velocity then becomes zero again. A control device outputs a vibration command signal so that during this period with the time 2T1 twice as much as the time T1 set as a cycle, a swing of a pendulum may be given to a counter weight 9. That is, if the natural frequency of the movement device main body 1a is omega when the relative rotating angle theta2 of the counterweight 9 is zero, the counterweight 9 is swing as a pendulum with cycle of 2pi/omega during the first half cycle of the movement device main body 1a.</p> |
