| 摘要 |
<p>PURPOSE:To provide a method and device for controlling plate thickness in tandem rolling mill in which a load balance is not disturbed during a rolling. CONSTITUTION:A distribution gain at the time of distributing the plate thickness deviation signal, which is detected by a plate thickness meter 5 provided on the exit side of the stand 4 of a tandem rolling mill, to each stand as a speed correction signal is decided by a device 101 for deciding the distribution of quantity for correcting plate thickness, based on the signal for the loaded state of each stand taken in by motor controlling devices 21-24. This speed correction signal is added to the speed command value of each stand, which value is the output of speed command devices 31-34, and transmitted to the motor controlling devices 21-24, controlling the rotation of motors 11-14. Consequently, a stable rolling is made possible without disturbing the load balance, and improvement is expectable in the accuracy of the plate thickness of a product.</p> |
