Slab centering control method and slab centering rolling device

The embodiment of the invention provides a slab centering control method and a slab centering rolling device, and relates to the technical field of slab rolling. The slab centering control method comprises the steps that the inclination angle of a slab and the distance between the end point of the slab and a laser beam are obtained through a camera device; judging whether the inclination angle of the slab is greater than a preset deviation angle; if the inclination angle of the plate blank is larger than the preset deviation angle, it is judged that the plate blank is in a non-centering state, an alarm signal is sent out, and a roller way is controlled to decelerate; if the inclination angle of the plate blank is smaller than or equal to the preset deviation angle, whether the distance between the end point of the plate blank and the laser beam is larger than the preset deviation distance or not is judged; if the distance between the end point of the plate blank and the laser beam is larger ...