| 摘要 |
PURPOSE:To support part of the weight of a movable mass, reduce the effect of the friction force, and improve the vibration reducing effect by fitting magnets to the movable mass and a vibrating body and generating a magnetic force applied to the movable mass in the same direction. CONSTITUTION:The vibration speed of a vibrating body 4 is detected by an acceleration meter 5, and a movable mass 1 is fitted to the vibrating body 4 via a spring 2, an actuator 3, and bearings 11. A control unit 6 detects the vibration speed of the vibrating body 4 and controls the actuator 3 so as to generate an opposite control force proportional to it. A pair of magnets 12 are fitted to the movable mass 1 and the vibrating body 4 so that both magnetic forces are affected each other. Accordingly, the effect of the friction force is effectively reduced, the vibration reducing effect is improved, the life of bearings and others supporting the weight of the movable mass can be extended. |
