分析武汉钢铁公司热连轧精轧机组主传动系统的振荡原因，并用仿真计算结果定性地解释了减小电网侧无功补偿装置的容量或者在控制回路加装带通滤波器（ＢＰＦ）将是有利于抑制谐波的振荡现象的产生．还对改造为双闭环控制系统的可行性进行了初步分析． The reasons of oscillation of the main drive system of the hot strip mill in Wuhan Iron and Steel Company are analyzed. The simulation results show that reducing the capacity of the reactive power compensation device or adding a band-pass filter (BPF) in the control loop will be Is conducive to the suppression of harmonic oscillation phenomenon. The feasibility of a double closed-loop control system was also analyzed.