Large-format laser engraving system and control method thereof

The invention relates to a laser engraving device, and discloses a large-format laser engraving system and a control method thereof. The large-format laser engraving system comprises an industrial personal computer, a fiber laser, a displacement system, a galvanometer system and a servo motor system, wherein the industrial personal computer is connected with the fiber laser, the galvanometer system and the servo motor system respectively; and the servo motor system is connected with the displacement system. The method comprises the following steps of: overlapping, by the displacement system, a focusing center of the fiber laser with a central origin of coordinates of a first segmented block of large-format laser engraving for positioning; transmitting, by the industrial personal computer, an instruction to the fiber laser and the galvanometer system; scanning and moving, by the galvanometer system, laser output by the fiber laser in an XY plane to finish laser engraving of the first segmented block; and contr