Optimal Sequence Control of Automatic Pouring System in Press Casting Process by using Greensand Mold

In the present paper, the optimal sequence control to the tilting-ladle type automatic pouring system in the press casting process is proposed. At first, dynamics of the pouring process is modeled by using mass balance and Bernoulli´s theorem. By using the model, a conventional sequence control in the automatic pouring system is analyzed. Then, in order to suppress the splash of molten metal during the pouring motion, the pouring pattern which has two steps flow rate is used to reference pouring pattern. In order to perform the pouring motion at short times and reduce the error between reference flow rate and real one, the sequence control parameters are then optimized. The effectiveness of the present system is demonstrated through simulations and experiments by real plant