基于分段线性化模型的冷连轧机PID解耦控制

PID Decoupling Control Based on the Subsection Liner Model of FGC for Tandem Cold Rolling

针对冷连轧机采用基于工作点的线性化模型进行动态规格变换控制时系统误差和张力波动较大的问题,提出了一种基于递推分段线性化模型的PID解耦控制方案。通过对五机架冷连轧机进行动态规格变换仿真表明,该方案可保证系统的控制精度,满足动态规格变换的控制要求。

The control system based on a linear model has large error and tension fluctuating when the flying gauge changes in tandem cold rolling mills. In order to solve the problem, a PID decoupling control method based on the recursion subsection linear model was presented. Simulations were carried out for a 5-stand tandem cold rolling mill using the method. It is found that the accuracy of AGC system is satisfied and the need of flying guage control can be met.