轧机自动位置控制停车系统ADRC控制器设计

Design of ADRC for Automatic Position Control Stopping System of Rolling Mill

在考虑轧辊与轧件间的阻尼力、弹性力和轧辊偏心力的基础上,建立了一个轧机自动位置控制(APC)停车系统的非线性模型,对其动力学特性分析表明该系统具有混沌特性。针对此系统具有非线性、变参数的特点,采用自抗扰控制(ADRC)方法设计二阶ADRC控制器,并在不确定性环境下进行仿真研究。结果表明:ADRC控制器对于系统出现的混沌和大负载干扰具有理想的鲁棒能力,其控制过程快速、平滑,稳态精度高。

Based on analyzing the damping force ,the elastic force and the roll eccentricity force between the roll and the strip ,a non-linear model of the automatic position control （APC） stopping system of rolling mill is derived .The dynamic analysis shows the APC stopping system has the chaotic characteristics .Based on the characteristics of the APC stopping system ,such as nonlinear and varia-ble parameters ,a two-order active disturbance rejection controller （ADRC） for the automatic position control stopping system is de-signed ,and the simulation is done within uncertainty environment .The simulation results show that the controller has ideal robust-ness to the system chaos and the large load disturbance ,and rapid and smooth control process and high steady precise performances can be implemented .