| 摘要 |
FIELD: technological processes. ^ SUBSTANCE: invention is related to the field of continuous casting machines. When controlling ingot speed by control of rotation speed of electric motors of roller device rolls and calculation of their rotation speed setting in accordance with specified ingot speed, average value of average calculated rotation speed of all roller electric motors per every roller rotation with speed detector and average value of measured ingot speed for the same time. Ratio of these values is calculated, and by multiplication of this ratio by specified speed of ingot, setting is calculated for regulators of electric motor rotation speed. Invention increases accuracy of ingot speed control due to elimination of effect of rotation pulsations of speed detector signal caused by distortion of geometry of roller with speed detector due to its uneven heating and wear in process of operation. Pulsations of electric motor current are reduced, and errors in calculation of electric motor rotation speed and those caused by variation of driving roller diametre due to wear (apart from roller with speed detector) are compensated. ^ EFFECT: provision of possibility to use rotation speed calculated in every electric drive as regulator feedback signal and not to use it for drives of rollers of individual speed detectors; increased accuracy of control. |
