| 摘要 |
<p>PURPOSE: To obtain such controller for a continuous rolling mill which maintains a control system always stably and realize a looper control able to respond in high speed regardless of changes in the dynamic characteristics of a rolling process. CONSTITUTION: The controller 0 is structured such that the position of a looper 3 is detected which imparts tension to a rolling stock 2 to be rolled by roller stands 1, 1 arranged in tandem, and that a continuous rolling mill is controlled by a control system which corrects the roller speed of the stands 1, 1 on the basis of the detected data. In this case, the controller is also provided with a parameter estimation device 7a, which operates the attenuation coefficient of the transfer function of the control system based on the detected data of the looper position, and an interpolative PI controller 7b which sets the control gain of the control system based on the computed attenuation coefficient and the maximum and minimum values of a prestored attenuation coefficient. With this structure, a looper control is realized which always stably maintains the control system and which enables a high speed responsiveness.</p> |
