Abstract: An excellent arithmetic for flow rate control - expert and alterable parameter PID control arithmetic has been developed by combining theory with practice to realize optimal control for bottom blowing flow rate. The practical application of 30 ~ 120 t top and bottom combined blown converter indicated that the expert and alterable parameter PID control technique had nice control performance i. e. smooth and quick to control bottom blowing flow rate curves, precisely modify flow rate, effectively prevent bottom lance blocking and obviously increase economic benefit.

Key words: Top and Bottom Combined Blown Converter, Bottom Blowing Flow Rate Control, Expert and Alterable Parameter, PID Control

摘要： 通过理论与实践相结合,开发出一种性能优良的流量调节算法-专家变参数PID调节算法,实现顶底复吹转炉底吹流量优化控制。在30～120 t顶底复吹转炉的实际应用表明,专家变参数PID控制技术具有优良调节性能,实际底吹流量曲线控制平稳、迅速,流量控制精确,有效防止底枪堵塞,明显提高了经济效益。

关键词: 顶底复吹转炉, 底吹流量控制, 专家变参数, PID控制