轧辊偏心分析和补偿汉宁窗采样的FFT比值算法

钢铁研究学报, 2007, 19(2): 20-0.

轧辊偏心分析和补偿汉宁窗采样的FFT比值算法

李勇 , 胡贤磊 , 王君 , 刘相华 , 李海涛

2. 2. 唐山钢铁股份有限公司冷轧薄板厂, 河北唐山 063016

1.1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

2. 2. Cold Mill Plant, Tangshan Iron and Steel Co Ltd, Tangshan 063016, Hebei, China

关键词：汉宁窗采样;快速傅立叶变换;厚差诊断;偏心补偿;板带材厚度控制

FFT Algorithm Sampled With HanningWindow for Roll Eccentricity Analysis and Compensation

LI Yong , HU Xianlei , WANG Jun , LIU Xianghua , LI Haitao

Keywords： hanningwindow sampling;FFT;thickness deviation diagnosis;roll eccentricity compensation;gauge control

汉宁窗采样快速傅立叶变换比值算法，可用于带钢厚度偏差的诊断，也可用于板带材的轧辊偏心控制补偿。它在非整周期截断情况下能有效地降低由泄漏效应和栅栏效应产生的估算误差。与直接FFT和一般的FFT改进算法相比，具有算法公式简单明了，算法精度高，收敛速度快的特点。通过数字仿真和某中厚板厂的现场数据分析，证明了这种算法的准确性、优越性。

A novel modified FFT algorithm sampled with Hanningwindow is presented, which can be used for the thickness deviation diagnosis of strip and roll eccentricity compensation. It can effectively reduce the estimated error caused by the leakage of FFT and is more accurate than FFT and common modified FFT algorithm. The simulation and experiment results show that this algorithm is very accurate and better for roll eccentricity analysis and compensation.

参考文献

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网