基于S7-300的链篦机篦床温度场智能控制器的设计

Design of Chain-grate Bed Temperature Intelligent Controller Based on S7-300

链篦机是球团生产的核心装备,其篦床温度场是一个大惯量、纯滞后、分布参数的被控对象,常规PID控制器难以保证温度控制的精度和稳定性;本文采用模糊控制技术和带死区的前馈控制算法设计了链篦机篦床温度场的智能控制器,并利用模块化编程方法编写了S7-300的控制程序,通过仿真实验看出,控制器满足系统的控制要求。

Chain-grate is a key equipment in producing pellet. Its grate-bed temperature field is a large inertial, time delays and distributed parameter controlled system. It is difficult to insure precision and stability of temperature control using classical PID controller. This paper adopts fuzzy control technology and feed forward control with dead-zone to design the intelligent controller for chain-grate bed temperature field. Modularization method is used in programming S7-300. The intelligent controller meets the requirement of the control system after simulation.