AMD SYSTEM FOR CONTROLLING VIBRATION A VERTICAL DIRECTION, CAPABLE OF PROVING THE VIBRATION CONTROL PERFORMANCE OF AN AMD

摘要

PURPOSE: An AMD(Active Mass Damper) system for controlling vibration a vertical direction is provided to generate the vertical reciprocating motion of a movable mass body, thereby proving the vibration control performance of an AMD by performing a vibration control with respect to the vertical direction.;CONSTITUTION: An AMD system for controlling vibration a vertical direction comprises an AMD(20), a plurality of displacement meters(30), and a controller. The AMD comprises a jig, a ball screw, a movable mass body, a driving motor, and a driver. The jigs are fixed to both side ends and a central portion of the bridge testing model and the ball screw is vertically installed in the jig. The movable mass body is installed in the ball screw, thereby vertically moving by the rotation of the ball screw. The driving motor is rotated and reversely rotated according to external driving signals. The driver generates the driving signals depending on an external control, thereby rotating the driving motor. The displacement meter measures the displacement of the bridge testing model. The controller generates vertical reciprocating motion by operating the AMD according to offset oscillation frequency which phase is opposite to natural frequency after extracting oscillation frequency to the vertical direction of the bridge testing model by using the signals measured by the displacement meter.;COPYRIGHT KIPO 2013