S7-300PLC在热处理炉脉冲控制系统中的应用

Application of S7-300 PLC in Pulse Control System of Annealing Furnaces

介绍一种由SIMATIC S7-300 PLC及相应I/O模块、通讯模块、现场温度压力传感器、各种电控阀门等硬件组成的热处理炉控制系统的系统组成、原理及实现方式。通过引入Fuzzy control、PID等数学模型的工程算法,稳定实现热处理炉生产过程中的各种控制要求,尤其能使炉温按照设计的温控曲线精确变化,达到节能降耗和精确控温的目的。

This paper presents the composition, concept and realization of a heat treatment furnace that consists of SIMATIC S7-300 PLC, I/O modules, communication modules, field temperature and pressure transducers, and various electrical valves. The operational comnmnds for mathematical models , such as PID, fuzzy control, are used to meet the control requirement din：log the operation of heat treatment finances, especially the furnace temperature can change precisely according to the designed temperature eontrnl curves, which can save energies and perform accurate temperature, control.