| 摘要 |
<p>PURPOSE:To obtain a looper height controller with which the height of a looper arranged between the stands of tandem mill can be always and constantly controlled even when rolling conditions are fluctuated. CONSTITUTION:The speed of a looper driving motor is controlled according to the command value of rotational speed with a means 8 for controlling speed of looper motor. Variables for expressing a model of looper including the command value of looper height and a means for controlling speed of looper motor, variables for specifying the response of height control of looper and variables for adjusting looper height are respectively set with a setting means 10. The variables set with the setting means 10 are substituted for a specified calculating formula and control gain is determined as numerical value with a control gain calculating means 11. The command value of rotational speed that the looper height is made to follow the command value of looper height is calculated based on the control gain determined with this control gain calculating means 11, the command value set with the setting means 10 and the detected value of looper height and added to the means 8 for controlling speed of looper motor.</p> |
