Active-type vibration control apparatus.

摘要

An adaptive-type vibration control apparatus for actively controlling vibration of an object (3) mounted on a movable base member (1,210) with vibration-isolating means therebetween. The apparatus includes a vibration sensor (13) secured to the object (3) for detecting vibration thereof, an actuator (12) secured to the object (3) for applying an inverse vibration thereto, and a digital filter (8) with an input (R) connected to the vibration sensor (13) and an output (S) connected to the actuator (12). The digital filter (8) is adapted to generate an output signal for controlling the actuator such that the vibration of the object (3) is at least suppressed by the inverse vibration applied to the object by the actuator (12). The vibration is actively controlled and reduced without being affected by resonance peak frequencies, particularly when the object (3) is applied with vibration over a wide frequency range, or with vibration of a random or periodic nature.