PFTL 101B-5.0kN 3BSE004191R1 | ABB | Decoupling controller for tension system

Description

PFTL 101B-5.0kN 3BSE004191R1 | ABB | Decoupling controller for tension system

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Most hot rolling systems use looper devices, which PFTL 101B-5.0kN the amount of steel formed during the biting process through their buffering effect and maintain a constant small tension control. In practical applications, the set value of tension cannot be too large or too small. Excessive tension has an impact on the quality of the strip; Too little tension can make the loop system unstable, which is not conducive to stable rolling

The traditional looper control maintains the looper height near the set value by adjusting the speed of the upstream frame roller, and maintains the tension between the frames by controlling the torque of the looper motor. In this control strategy, the looper height and tension control are completely independent, without considering the coupling relationship between the two. However, in reality, when the PFTL 101B-5.0kN height changes, the tension between the frames also changes, The reverse is also true. The height and tension system of the loop is a typical dual input, dual output coupling system. In addition, the loop control system also interacts with other control systems (such as AGC system and inter frame water spray system), which makes loop control more complex and eliminates coupling relationships, making it stable to work. Improving product dimensional accuracy has become an important issue in loop control

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