差动调速连轧机的主传动系统,由一个大功率交流电动机和一个小功率直流电机组成。两台电动机同时驱动行星齿轮差速器。差速器连续给出不同速度,而轧辊速度得到调节。没有使用昂贵、复杂的电子系统,仅通过差速效应使差动调速连轧机的“调节精度”能达到0.1～0.2％,并在咬钢时主传动电机的“动态速降”达到0.25％s。这些数据已达到同类连轧机80年代的国际水平。 The main drive system of a differential speed control continuous rolling mill consists of a high-power AC motor and a low-power DC motor. The two motors drive the planetary differential simultaneously. Differential continuously gives different speeds, while the roll speed is adjusted. Without the use of expensive and complex electronic systems, the “adjustment accuracy” of differential speed control continuous rolling mills can reach 0.1-0.2% only by the differential effect, and the “dynamic speed drop” of the main drive motor reaches 0.25% s. These data have reached the international level of the same type of continuous rolling mill in the 1980s.