基于模糊自适应PID的铸轧机结晶器液位控制系统  

Design of mold liquid level control system in roll caster based on fuzzy control regulation

作　　者：曹光明[1] 吴迪[1] 张殿华[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110004

出　　处：《控制与决策》2007年第4期399-402,407,共5页Control and Decision

基　　金：国家973计划项目(2004CB619108)

摘　　要：结晶器内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,通过对铸轧机结晶器液位控制系统的分析,建立包含液压执行机构在内的结晶器液位模型,并且提出模糊自适应PID控制策略,给出模糊控制规则,从而实现PID参数的在线整定.仿真表明该系统较常规PID控制具有更好的稳定性,且控制精度高.As a time-variant, non-linear and multi-disturbance complex system, the controlling system of steel level is analysed, according to which the model of steel level including the hydraumatic actuator is constructed. Furthermore, the fuzzy self-adaptive PID control strategy is presented and the rule of fuzzy control is proposed in order to realize the in-line adjustment of PID parameters. The simulation result shows that the proposed system is more stable and accurate than the traditional PID control.

关 键 词：双辊铸轧 液位控制模型 传统PID控制 模糊自适应PID控制 模糊控制规则 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]