FUZZY控制理论在直热炉控制系统中的应用

Application of fuzzy control theory in direct heating-furnace control system

在分析偏流成因和处理手段的基础上 ,提出以 3管出口温差绝对值为输入量 ,以输入调节阀开度为控制量的 3个模糊控制器并行的控制方案 .该方案实施后 ,解决了偏流问题 ,减少了管内结焦现象 ,从投运至今 7年 ,加热管的使用寿命延长了 4倍以上 .提出的采用离散模糊控制器的新方法 。

On the basis of bias\|flow analysis and its countermeasures, a control scheme is given for the three fuzzy controller to be built by three pipes absolute temperature\|difference as the input, the openness the valve as the controlled object. After realizing this control scheme, the problem of bias\|flow has be resolved perfectly. Now coked pipes are burned once a year, but no coking occurs. We use this control scheme from beginning to now for seven years. There is no need to change the heating\|pipes at all. A new design method of discrete fuzzy controller presented in this paper can resolve the bias\|flow problem in other fluid distribution control system.