Variable dynamic force control type exciter for dynamic test of large structure

摘要

PURPOSE: A variable dynamic load exciter is provided to measure a dynamic characteristic of a structure by adjusting intensity of force applied to the structure through controlling resonance frequency of the variable dynamic load vibrator. CONSTITUTION: A variable dynamic load exciter includes a vibrating device, which is supported by frames(20,70,80) and provided with a motor(10) and an eccentric rotator(12), a base frame for supporting the vibrating device, a resonance frequency adjusting device(100) for transferring vibrating force from the vibrating device to the base frame and a damping force adjusting device(200). The first frame(70) is vertically installed with respect to a vibration frame(20). The second frame(80) is installed at an upper portion of the first frame(70). The motor(10) is fixed to an upper portion of the second frame(80). The resonance frequency adjusting device(100) surrounds each supporting shaft(50).