基于专家模糊PID的前馈-反馈控制在黑液液位控制中的应用  

Application of black liquor level control system based on expert and Fuzzy PID feed-forward and feed-back control

作　　者：张爱娟[1] 胡慕伊[1] 黄亚南[1] 

机构地区：[1]南京林业大学江苏省制浆造纸科学与技术重点实验室,南京210037

出　　处：《中华纸业》2016年第4期29-33,共5页China Pulp & Paper Industry

基　　金：江苏省制浆造纸科学与技术重点实验室;江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：黑液液位是碱回收蒸发工段中重要的被控变量,它直接影响黑液浓度和蒸发工段的效率。针对黑液液位干扰多、存在滞后等特点,提出专家前馈和模糊PID反馈的黑液液位控制系统。利用专家规则来对干扰进行提前控制,利用模糊PID对黑液液位进行闭环反馈控制。MATLAB仿真结果表明专家前馈和模糊PID反馈控制系统控制效果较好,并在THJSK-1实验平台上用MCGS组态软件进行了实时的控制研究。Black liquor level is an important variable in evaporation process of alkali recovery. It directly affects the concentration of black liquor and evaporation efficiency. Considering the large time- delay, time-varying and multi-interference characteristics of black liquor level, in this paper was designed an expert feed-forward and fuzzy PID feed-back control system for black liquor level, in which expert rules can be used to control interference in advance. Fuzzy- PID can be used to form a closed-loop feedback to control the level of black liquor. MATLAB simulation results show that expert feed- forward and fuzzy PID feed-back control system has a good quality. In this paper was also studied the real-time research with THJSK-I experiment and MCGS configuration software.

关 键 词：黑液液位 专家前馈 模糊PID 

分 类 号：TS733.9[轻工技术与工程—制浆造纸工程]