Melt surface level control method of continuous casting machine

摘要

[Abstract] To provide a control method to suppress the non-stationary bulging of melt surface level fluctuation of the continuous casting machine. A I to interpose a filter element that selectively attenuate unsteady bulging frequency control loop of the hot water level control system of the continuous casting. The filter element is preferably used a notch filter represented by the following formula. The bath level level fluctuation and frequency analysis online, the unsteady bulging frequency and variable peak height measured, notch frequency f = ω / 2π of the characteristic parameters of the notch filter, notch ratio g, Furthermore it is preferable when automatically determining the proportional gain bandwidth constants Q and bath level level control. [Number 7]