贮液缸液位系统双模糊PID控制研究  

A Study on the Control of the Liquid Level System of Liquid Storage Tanks Based on Double Fuzzy PID

作　　者：杨勇 赵崇杰 王佳欣 黄福 姚宇茏 YANG Yong;ZHAO Chong-jie;WANG Jia-xin;HUANG Fu;YAO Yu-long(Guangdong Polytechnic Normal University,Guangzhou Guangdong 510665;Guangzhou Changren Industrial Technology Company,Guangzhou Guangdong 511340)

机构地区：[1]广东技术师范大学机电学院,广东广州510665 [2]广州长仁工业科技有限公司,广东广州511340

出　　处：《广东技术师范大学学报》2021年第3期33-38,共6页Journal of Guangdong Polytechnic Normal University

基　　金：广东省自然科学基金项目(2016A030313730);广东省科技创新战略专项资金(“攀登计划”专项资金)(pdjh2020a0330)。

摘　　要：针对啤酒灌装机贮液缸液位系统控制过程中存在的时变性、滞后性、非线性等问题,提出了一种基于双模糊PID的贮液缸液位系统控制算法.首先,分析了贮液缸液位系统控制原理,并对此进行数学建模.其次,设计了双模糊PID控制算法,分别建立了粗调、精调模糊控制器及模糊规则表,并在液位系统的误差处于不同范围时能自动切换对其控制,以此对PID进行精确的参数整定.最后,搭建了液位系统仿真实验,实验结果表明:模糊PID的性能要优于PID,而双模糊PID在模糊PID的基础上更好地优化了其性能,提高了液位系统的精度、鲁棒性以及响应速度.Aiming at the problems of time-varying,hysteresis and non-linearity in the liquid level system control process of liquid storage tanks in beer filling machines,a control algorithm for the liquid level system of liquid storage tanks based on double fuzzy PID is proposed.First,the control principle of the liquid level system of liquid storage tanks is analyzed,and mathematical modeling on this is carried out.Secondly,a double fuzzy PID control algorithm is designed,the coarse-tuning and the fine-tuning fuzzy controllers are set and fuzzy rule tables are established respectively.The control can be automatically switched when the error of the liquid level system is in different ranges,so as to accurately tune the parameters of the PID.Finally,a simulation experiment of the liquid level system is conducted.The experimental results show that the performance of fuzzy PID is better than that of PID,and the performance of double fuzzy PID is more optimized than that of fuzzy PID,with improved accuracy,robustness and response speed of the liquid level system.

关 键 词：双模糊PID控制 模糊规则表 液位系统 粗调 精调模糊控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]