基于模糊控制决策的铸轧机结晶器液位控制系统设计

考虑熔池钢水液位的诸多影响因素,结合实验室铸轧机实际工作情况,建立了包含液压执行机构在内的控制模型.通过对铸轧机结晶器液位控制系统的分析,结晶器钢水液位控制系统是一个时变的、非线性的、多干扰的复杂系统,应用过程控制原理和模糊控制技术,对该系统进行自动控制.在控制策略上采取了模糊控制与传统控制相结合的方式,设计了Fuzzy-PID控制,给出了模糊控制规则.通过仿真,表明该系统具有稳定性好、控制精度高等特点.

Fuzzy-Decision-Based Design of Liquid Level Control System for Rolling Caster Mold

Considering several influencing factors on molten steel level in pool and the actualities of the rolling caster used,a relevant control was developed including the hydraulic actuating mechanism.The analysis of the molten steel level control system for the rolling caster mold that the process of controlling molten steel level is time-varying,nonlinear and multi-interferential.Thus,the process control theory and fuzzy control technology were applied to the automation of the control system,i.e.,the control strategy combined the fuzzy decision with conventional control.Then,the fuzzy-PID control system was designed with the rules of fuzzy control given.Simulation results showed that the control system is highly stable and accurate.