SYSTEM OF VIBRATION DAMPING CONTROL FOR CRANE AND METHOD OF VIBRATION DAMPING CONTROL FOR CRANE

The present invention is a system of vibration damping control for a crane which reduces the vibration of a support structure (20) during shaking of a crane (10) provided with a trolley (24) that moves over a girder (22) and boom (23) provided to a top side of the support structure wherein the system is provided with: a vibration detection sensor (30) for detecting vibration; a trolley drive unit for driving during movement over the girder (22) and boom (23); a calculation unit for calculating a vibration speed of the support structure on the basis of a detection signal of the vibration detection sensor (30); a determination unit for determining from a calculation signal of the calculation unit whether vibration damping control of the support structure (20) is necessary; and a command signal transmission unit for transmitting to the trolley drive unit a command signal for adjusting the moving speed of the trolley (24) when the determination unit has determined that vibration damping control is necessary. The present invention thereby makes it possible to facilitate vibration damping retrofitting and enable the shaking caused by strong winds or earthquakes of a wide range of frequencies and magnitudes to be dealt with.