In this paper, the system structrure, main fuction and warking principle of the computer control system for large-scale electric arc furnace. The system software AMX and control algorithm are also discussed deeply.

• 介绍了大型电弧炉计算机控制系统的结构、主要功能及工作原理，并就系统软件AMX及控制算法进行了讨论。