茶叶杀青机模糊RBF神经网络PID温控系统设计与试验  

Design and Experiment of the Temperature Control System of the Fuzzy RBF Neural Network PID in Tea Fixing Machine

作　　者：潘玉成 刘宝顺 黄先洲 陈小利 吕仙银 PAN Yucheng;LIU Baoshun;HUANG Xianzhou;CHEN Xiaoli;LYU Xianyin(Department of Mechanical and Electronic Engineering,Ningde Vocational and Technical College,Fu′an 355000,China;Wuyishan Manting ock Tea Research Institute,Wuyishan 354300,China;Department of Biotechnology,Ningde Vocational and Technical College,Fu′an355000,China;Department of Information Techonlogy and Engineering,Ningde Vocational and Technical College,Fu′an 355000,China)

机构地区：[1]宁德职业技术学院机电工程系,福建福安355000 [2]武夷山市幔亭岩茶研究所,福建武夷山354300 [3]宁德职业技术学院生物技术系,福建福安355000 [4]宁德职业技术学院信息技术与工程系,福建福安355000

出　　处：《茶叶科学》2019年第2期139-149,共11页Journal of Tea Science

基　　金：基于模糊神经网络的PID控制方法研究;福建省教育厅科技项目(JAT171132)

摘　　要：针对滚筒式杀青机温控系统具有时变不确定非线性的特点,采用常规PID控制难于满足控制要求,利用模糊控制的良好收敛性和对模糊量的运算优势,以及神经网络自学习、自适应的特性,将常规PID控制与模糊控制、神经网络结合起来,提出一种基于模糊RBF神经网络的PID控制策略,实现了对PID参数的实时在线整定。MATLAB软件仿真与试验结果表明,模糊RBF神经网络PID控制与常规PID控制相比,系统具有更好的动静态特性和抗干扰性能,温度控制误差在±2℃范围内,能很好地满足茶叶杀青工艺对温度的控制要求,保证了茶叶的杀青质量。Due to the characteristics of time-varying uncertainty and nonlinearity of the temperature control system of rotary fixing machine, the conventional PID control parameters are difficult to meet the control requirements . Based on the good convergence of fuzzy control, computing advantages of fuzzy quantity and the self-learning and -adapting characteristics of neural network, a PID control strategy combined PID control, fuzzy control and neural network was proposed to achieve real-time online tuning of PID parameters. The simulation and test results of MATLAB software show that the fuzzy-RBF neural network PID control had better dynamic and static characteristics and anti-jamming performance than the conventional PID control. The temperature control error was within ±2℃, which well met the temperature control requirements of the tea fixation process and ensured the quality.

关 键 词：茶叶杀青机 杀青温度 模糊RBF 神经网络 PID控制 MATLAB仿真 

分 类 号：TS272.3[农业科学—茶叶生产加工]