基于比值校正法的轧辊偏心补偿控制  

Roller eccentricity compensation control based on ratio correction method

作　　者：李仲德[1] 徐翔宇[1] 崔桂梅[1] 李爱莲[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《冶金自动化》2015年第5期30-35,共6页Metallurgical Industry Automation

基　　金：内蒙古自治区自然科学基金资助项目(2012MS0911)

摘　　要：针对快速傅里叶变换(FFT)算法在轧辊偏心控制中存在的缺点,提出了基于比值校正法的轧辊偏心补偿控制方法。首先利用比值校正法对FFT算法得到的频率、幅值、相角参数进行校正以提高参数精度,由校正后的参数重构偏心模型,然后将模型运用于偏心补偿控制。仿真及实验结果表明,利用校正参数重构得到的轧辊偏心模型可以很大程度减小轧件厚度波动,补偿效果优于传统FFT法。Aiming at the shortcomings existing in the Fast Fourier Transform （FFT） algorithm used in the roller eccentricity control, the roller eccentricity compensation control method based on ratio cor- rection method is presented in this paper. Firstly, the ratio correction method is used to correct the parameters derived from the FFT algorithm, such as frequency, amplitude and phase angle, to improve their accuracy and the eccentricity model is reconstructed by using these corrected parameters. Then, the model is used in the eccentricity compensation control. The simulation and experiment results show that the roller eccentricity model reconstructed with the corrected parameters can greatly reduce the thickness fluctuation of the workpiece, and the compensation effect is better than that of the traditional FFT algorithm.

关 键 词：轧辊偏心 比值校正法 补偿控制 快速傅里叶变换 AGC系统 

分 类 号：TG333.17[金属学及工艺—金属压力加工]