Wide and thick plate pre-straightening machine automatic reverse straightening control method based on thickness classification

The invention belongs to the field of wide and thick plate rolling automatic control, and particularly relates to a wide and thick plate pre-straightening machine automatic reverse straightening control method based on thickness classification. The system is mainly used for carrying out thickness area division on plates, different straightening passes are set for the plates with different thicknesses, and the system specifically comprises the following operation steps that a steel plate is detected to be in place through thermal detection before a straightening machine; determining straightening passes according to the thickness of the steel plate; after the pyrometer measures the temperature of the steel plate, model calculation is started, and straightening parameters such as the maximum straightening force of the current pass, the roll gap position and the conveying belt speed are set; first-pass forward straightening is carried out; and if reverse straightening is needed, the model calculation is requeste