模糊PID控制在高炉炉顶压力控制系统中的应用

来源期刊：冶金自动化2010年第2期

论文作者：陈奇福 吴敏 安剑奇 王昌军

文章页码：10 - 14

关键词：高炉； TRT； 炉顶压力控制； 模糊PID控制

Key words：blast furnace； TRT； control for top pressure； hybrid fuzzy-PID

摘    要：在高炉控制参数中,炉顶压力是非常重要的参数之一。高炉生产要求炉顶压力必须稳定,炉顶压力不稳定,会影响炉况顺行,甚至可能造成崩料、悬料,导致炉况失常。本文针对华菱涟源钢铁有限公司2 200 m³高炉炉顶压力波动大、强耦合、严重非线性的问题,利用模糊算法,对原有PID控制器进行改进,设计了基于模糊PID混合控制算法的高炉炉顶压力控制系统。在涟钢2 200 m³高炉改进后的实际运行结果表明,减小了高炉炉顶压力波动,降低了高炉焦比,对高炉生产过程有着重要指导意义。

Abstract: Top pressure is one of the important parameters to be controlled for normal and efficient operations of blast furnace.A hybrid fuzzy-PID scheme is proposed in this paper for top pressure control.Taking strong coupling and nonlinearity of the control plant into account,the scheme,in which PID controller is combined with a fuzzy controller,is designed to achieve more steady top pressure performance.A practical control system,adopting the proposed scheme,is applied to a 2 200 m3 blast furnace at Hualing Lianyuan Iron and Steel Co.,Ltd.and the on-line test shows that the performance of top pressure is significantly improved,which is definitely helpful to further decrease of the coke ratio.