电流谐波与轧制力谐波协同诱发主传动多态耦合振动研究

张义方;闫晓强 凌启辉

振动与冲击 ›› 2014, Vol. 33 ›› Issue (21) : 8-12.

PDF(1954 KB)
PDF(1954 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (21) : 8-12.
论文

电流谐波与轧制力谐波协同诱发主传动多态耦合振动研究

  • 张义方1,2 闫晓强1 凌启辉1
作者信息 +

Research on Polymorphic Coupling Vibration of Mill Main Drive System Inducing by Synergy Effect for Harmonics of Motor Current and Rolling Force

  • ZHANG Yi-fang1,2 YAN Xiao-qiang1 LING Qi-hui1
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文章历史 +

摘要

现代大型热连轧机是一种复杂机电系统,轧机振动问题是影响轧机生产稳定的严重问题。利用扭矩遥测系统测试轧机机械传动系统扭振发现轧机主传动扭振波形及频谱中存在典型的强或弱两种振动特征。同时发现轧机在轧制过程中电机电流和轧制力存在谐波,当谐波与传动系统固有频率接近时将诱发较大的振动。为研究其机理,利用仿真技术求解了轧机主传动扭振与电流谐波和轧制力谐波激励的相关性。研究表明:随着谐波激励特征的变化,主传动扭振呈现多态强弱变化,从而为抑制轧机耦合振动提供理论依据。

Abstract

Large modern hot strip mill is a complex electromechanical system.Vibration of rolling mill is a serious problem which effect the stability of production. By using torque telemetry system to test the torsional vibration of mechanical drive system,it is found that two typical characteristics of the strong or weak vibration exist in the waveform and spectrum of torsional vibration,meanwhile, there are harmonics in motor current and rolling force during rolling mill production, and when harmonic frequency is close to the natural frequencies of main drive system, rolling mill present a heavier torsional vibration on mill main drive system. For the study of its mechanism ,using computer simulation , the correlation of main drive torsional vibration and harmonic excitation by motor current and rolling force is solved. Research shows that with the harmonics excitation change, torsional vibration presents polymorphic variation strong or weakly on main drive system,which lay a theoretical foundation for vibration suppression.

关键词

电流谐波 / 轧制力谐波 / 协同作用 / 耦合振动 / 仿真

Key words

current harmonics / rolling force harmonics / synergy effect / coupling vibration / simulation

引用本文

导出引用
张义方;闫晓强 凌启辉. 电流谐波与轧制力谐波协同诱发主传动多态耦合振动研究[J]. 振动与冲击, 2014, 33(21): 8-12
ZHANG Yi-fang;YAN Xiao-qiang LING Qi-hui. Research on Polymorphic Coupling Vibration of Mill Main Drive System Inducing by Synergy Effect for Harmonics of Motor Current and Rolling Force[J]. Journal of Vibration and Shock, 2014, 33(21): 8-12

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