ACTIVE VIBRATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an active vibration control device possible to be reduced in the weight of a movable member and having superior operation performance (a vibration control function) in a high-frequency region. SOLUTION: This active vibration control device includes: an actuator body 11; a bottomed-cylindrical fixed side yoke 20 provided inside of the actuator 11 and forming an insertion hole 21 on the center axis O of the actuator body 11; a movable part 40 inserted into the insertion hole 21 and to be driven for displacement along the center axis O by the magnetic thrust to restrict vibration; and a cylindrical movable side yoke 50 provided in the movable part 40. The movable side yoke 50 is arranged to be inserted with a magnetic gap G between a bottom part 24 and itself by a through hole 24a provided in the bottom part 24 of the fixed side yoke 20. COPYRIGHT: (C)2011,JPO&INPIT