Power control method for laser repeated combination track

The invention discloses a power control method for a laser repeated combination track, which comprises the following steps of: determining a datum line along a center line of a welding seam, and configuring corresponding graph sizes according to different shapes of the welding seam to cover the width of the welding seam; configuring a corresponding power curve according to the length of a single graph; the laser spot moves along the track of the pattern, and meanwhile, the whole pattern moves along the advancing direction of the datum line with the pattern center to form a motion track of a composite curve path; copying the power curve corresponding to a single graph into other repeated graphs to form a continuous power curve on the composite curve; enabling the power curve of each pattern cycle period to be independent of a control unit; a single control unit is used as a reference unit for power modification of a laser repeated combination track, a continuous composite curve is subjected to power curve copy