以首钢迁钢2160热轧生产线主传动F1-F4机架增容改造为背景，对交交变频主传动的控制系统进行了设计、装置制造、调试及新功能开发。从传动系统的稳态分析及轧制过渡过程入手，推导了交交变频传动系统带负荷观测器和不带负荷观测器的传递函数，利用MATLAB进行稳定性分析，找到了轧机出现振动现象的原因，提出了抑制措施，投入负荷观测器后，对抑制轧机振动起到了良好的实际效果。
Based on rebuilded of the main drive for F1-F4 stands of Shougang qiangang 2160mm Hot Strip Mill, it was carried out the AC-AC converter main drive control system design、equipment manufacture、testing and development of new features. In this paper, started from the steady-state analysis of transmission system and rolling transition process, derived transfer function of AC-AC converter drive system with load observer and without load observer. The stability analysis was carried out using MATLAB, found out the reason of phenomenon of rolling mill vibration and proposed suppression measures, after load observer put into use, it has a good actual results to suppress the mill vibration.
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