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介绍了一种用ＰＬＣ实现对化肥厂造气炉的全面控制方案。该方案不仅用ＰＬＣ对造气炉的各个操作程序进行控制，而且利用ＰＬＣ有限的资源以一种区域控制方案对合成的Ｈ２／Ｎ２进行有效控制。该方案采用了ＰＬＣ极易实现的逻辑判断和简单的算术运算完成了对具有较大纯延迟的对象实现了有效的自动控制。
Introduced a PLC with a fertilizer plant gas stove comprehensive control program. The program not only controls the operation procedures of the gasification furnace by PLC, but also utilizes the limited resources of the PLC to effectively control the synthesized H2 / N2 with a regional control scheme. The program uses the logic of PLC easy to determine and simple arithmetic operation to complete the object has a large pure delay to achieve effective automatic control.