Speedregulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
The control process of bar rolling speed was presented and the effects of low tension, loop and cascade control in speedregulation were described.
介绍了棒材轧线的系统结构及轧机速度控制过程，详细说明微张力、活套以及级联控制等在速度调节中的作用。
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Its disk rotor, composed solely of copper and insulator, achieves high dynamics and excellent regulation of motion at lowspeed, as well as silent and vibration-free functioning.