Mold molten steel level control system of the continuous casting machine

摘要

PURPOSE: To provide a control device for molten metal surface level in a mold for continuous caster, by which hunting of the molten steel surface level in the mold caused by influences, such as the variation of a control parameter, the impression of disturbance, can automatically be controlled in early time. ;CONSTITUTION: A third control device is the one which can be set to the characteristic of a control change-over line shown with dL'+a.dL=0 (a0) for dividing control state ranges (2) and (4) in the control state ranges (1)-(4) constituted from the control state composed of a deviation dL from the aimed value of the molten metal surface level and the first order differential value dL' of the deviation. By a condition setting part, a control gain approaching the control state for the control change-over line, is given to each control state range. Then, by the third control device, based on the control gain in the control condition range, to which the detected control condition belongs, the pouring quantity of the molten steel is calculated and outputted to the stopper actuator.;COPYRIGHT: (C)1993,JPO&Japio