VIBRATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a vibration control device enabling more fine vibration control to be carried out under a low cost.SOLUTION: This invention comprises: a movable mass 20 supported by an object structure in such a manner that it can be reciprocated in a horizontal direction X; a first linear motor 21 and a second linear motor 22 for driving the movable mass 20; a vibration sensor 40 for detecting vibration of the object structure; a linear scale sensor 23 for detecting a relative displacement between the movable mass 20 and the object structure in the horizontal direction X; and a control part 32 for controlling the first linear motor 21 and the second linear motor 22 on the basis of the vibration of the object structure and the relative displacement. The control part 32 comprises a spring element part 323 and an attenuation element part 324 for controlling the first linear motor 21 and the second linear motor 22 in such a way that the movable mass 20 is passively reciprocated under vibration of the object structure so as to restrict vibration of the object structure.