Cold strip rolling mill plate type closed-loop control method based on influence matrix recursive identification

The invention relates to a cold strip rolling mill plate type closed-loop control method based on influence matrix recursion identification, and belongs to the technical field of rolled steel plate shape control methods. According to the technical scheme, the method comprises the following steps: firstly, recurring a least square method based on fading memory; and carrying out online identification on an influence matrix of the change from the control increment of the plate shape adjusting mechanism to the plate shape mode characteristic coefficient corresponding to the actual plate shape, further carrying out self-correction on the parameters of the plate shape controller, and calculating the control quantity of the plate shape adjusting mechanism according to the characteristic coefficient deviation of the target plate shape and the actual plate shape. The method has the beneficial effects that the plate shape mode identification influence matrix precision and the plate shape controlprecision are improved,