基于重复控制和鲁棒PID的冷轧带钢厚度控制系统  

Cold rolled strip gauge control system based on repetitive control and robust PID

作　　者：王修岩[1] 孔令军[2] 孙一康[1] 王洪希[1] 

机构地区：[1]北京科技大学高效轧制国家工程中心 [2]北华大学

出　　处：《冶金自动化》2004年第3期31-33,43,共4页Metallurgical Industry Automation

摘　　要：轧辊偏心是高精度冷轧机厚度控制不能忽视的问题。带钢轧制是一个复杂的非线性过程,带钢原料性质、处理量变化等也会导致过程模型发生变化。本文提出一种基于重复控制进行偏心补偿,鲁棒PID控制器对模型不确定性不敏感的带钢厚度控制系统。仿真结果证明系统具有良好的跟随和抗扰性能,表明这种混合控制方法有一定的适用性。Roll eccentricity is a problem not to be ignored for strip gauge control in high accuracy cold rolling mill.Strip rolling is a complicated nonlinear process.If strip material property or processing variable value is changed,process model will be changed.A kind of strip gauge control system is presented based on repetitive control and robust PID.Repetitive control can make compensation for roll eccentricity and robust PID controller is not sensitive to uncertainty of model.Simulation result proves that this system has good follow and anti-interference performance,thus this hybrid control method has a certain applicability.

关 键 词：冷轧带钢 厚度控制 鲁棒P1D控制 重复控制 轧辊偏心 冷轧机 

分 类 号：TG333[金属学及工艺—金属压力加工]