Control method and device for eliminating brush roll marks on surface of strip steel of continuous annealing line

The invention discloses a control method and device for eliminating brush roll marks on the surface of strip steel of a continuous annealing line, and relates to the technical field of silicon steel production. The method comprises the following steps of: obtaining model information of brush rolls, wherein the model information of the brush rolls comprises hard brush rolls and soft brush rolls; obtaining standard operation speed of an inlet section of a brush washer; obtaining first operation speed of the inlet section of the brush washer; and determining that the brush rolls perform a first instruction according to the brush roll model information, the standard operation speed and the first operation speed, wherein the first instruction is used for controlling working states of the brush rolls. The control method solves the technical problem that the surface quality of strip steel is severely affected when large-area brush roll marks on the surface of the strip steel are easily caused by the inlet section du