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分析了冶金、铸造系统中，喂丝工艺的控制要求，采用了三种控制技术：最优控制、ＰＬＣ技术、分布式控制，使系统可靠性大幅度增强，经济效益明显提高。
The metallurgical and casting systems are analyzed. The control requirements of the silk feeding process are analyzed. Three kinds of control techniques are adopted: optimal control, PLC technology and distributed control. The reliability of the system is greatly enhanced and the economic benefits are obviously improved.