Control methods for vacuum degassing equipment, control systems for vacuum degassing equipment, methods for determining model parameters, and devices for determining model parameters.

Abstract

The control method for the vacuum degassing equipment includes: a model parameter determination step, which determines the model parameters of the carbon concentration estimation model in the molten steel; a carbon concentration estimation step, which estimates the carbon concentration in the molten steel; a decarburization treatment completion determination step, which determines the completion of the decarburization treatment; and a control step, which controls the manipulation quantities related to the operation of the vacuum degassing equipment. The model parameter determination step determines the model parameter values ​​for the next feed based on the measured value of the carbon concentration in the molten steel after decarburization, the estimated value of the carbon concentration in the molten steel in the most recent specified number of feeds, and the actual parameter values ​​of the carbon concentration estimation model in the molten steel.

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