| 摘要 |
PURPOSE:To impove the balancing property of tension lying between rolles, by installing a driving control device at every bridle roll in a steel process line, and giving a total control device a common speed command, while making the detected speed of one roll so as to be fed back to the total control device. CONSTITUTION:Bridle rollers 2 and 3 are driven by motors 4 and 5 controlled from each of driving control devices 6 and 7. At this time, these control devices 6 and 7 are given an identical speed command 10, while a detecting speed signal 11 of one optional roll 2 is fed back to a speed control part 9 of each of these control devices 6 and 7 as a feedback signal. With this constitution, all torque commands given to each of torque control parts 8 and 8 become common to them all whereby torque imbalance is prevented, thus tension between rolls can be equalized. |
