Cold-rolling mill multivariate strip shape control method based on constrained optimization algorithm
A technology of constrained optimization and flatness control, which is applied in the field of metallurgical rolling and can solve problems such as complex modeling of the flatness control system
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[0037] Embodiment 1: This embodiment 1 discloses the processing process of the multi-variable flatness optimization algorithm in the last stand flatness closed-loop control system of a 1450mm five-stand tandem cold rolling mill. The plate shape adjustment mechanism includes roll tilting, positive / negative bending of work rolls, positive bending of intermediate rolls and lateral movement of intermediate rolls. The main control parameters and rolling parameters are shown in Table 1.
[0038] Table 1 Main parameters of rolling mill
[0039]
[0040]
[0041] The control method of the present invention formulates an optimization model for solving the optimal adjustment amount of each plate shape adjustment mechanism through mathematical modeling, and designs a multi-variable optimization algorithm with global convergence around the optimization model; the multi-variable The optimization algorithm transforms the multivariable plate shape optimization problem with constraints ...
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