APPARATUS OF CONTROLLING MOLTEN METAL LEVEL WHICH IS ROBUST FOR PERIODIC DISTURBANCE

摘要

The invention of the bath surface level of the molten metal mold in the continuous casting process in an environment that periodic disturbance is present relates to a device for controlling constant. The invention according to a bath surface level control device comprising means for dog Measurement adjustment adjusts the amount of molten metal flowing into the mold from the tundish into one caliber, as measured level value (h) by detecting the bath surface level in the mold a level sensor for outputting; The measured level values (h) and the group so that the difference of the set target level value is 0 (hr), the dog Measurement claim 1 for determining a dog Measurement Measurement control value of the adjusting means (Sr1) for generating a level control; To the measured level values (h) the inverse model operation detected by the level sensor, the measured level value is periodic disturbance (d) Accommodation Measurement control value of the control value by the first two metrology components included in (h) (Sr2 ) disturbance component for calculating the detection section; And wherein the two metrology control value (Sr2) by subtracting the periodic disturbance (d) one component metrology control value is determined by the dog of the dog Measurement Measurement adjusting means is removed from the first one metrology control value (Sr1) which provides a strong bath surface level control unit in the periodic disturbance, which includes a first chamber for generating a subtraction value control dog Measurement (Sr).