Roll gap learning coefficient correcting method in roll gap regulating process of hot continuous rolling strip steel precision rolling

The invention relates to a roll gap learning coefficient correcting method in a roll gap regulating process of hot continuous rolling strip steel precision rolling. The method comprises the following steps: when a roll gap is regulated by adopting a roll gap setting calculating model, performing positive correcting on a roll gap learning coefficient when the situations of a super-thick strip steel head size, a slightly small learning regulating amount or reverse learning appear; performing negative correcting on the roll gap learning coefficient when the situations of a super-thin strip steel head size, a slightly small learning regulating amount or reverse learning appear, wherein the roll gap learning coefficient correcting formula is lcs-n=lcs-o+dh-act*a, in the formula, lcs-n is the roll gap regulating value which is obtained after the calculating of the model by utilizing current strip steel actual data, and is used for calculating the roll gap of a next piece of strip steel; and lcs-o is the roll gap regulating value which is used when the current strip steel setting calculating is performed; and the a is a regulating coefficient. According to the roll gap learning coefficient correcting method in the roll gap regulating process of the hot continuous rolling strip steel precision rolling, the roll gap learning coefficient is corrected in real time according to actual production when specific judgment conditions are satisfied on the basis of an existing roll gap setting calculating model, so that the purposes of regulating the roll gap quickly and precisely and improving the strip steel thickness rolling precision are achieved.