包装与食品机械2018，Vol.36Issue(2)：30-34,5.DOI:10.3969/j.issn.1005-1295.2018.02.007
基于PID的蔬菜次氯酸消毒水在线测控系统设计
Design of An Online Measuring and Controlling System for Vegetable Hypochlorous Acid Disinfection Water Based on PID
摘要
Abstract
A system that can prepare hypochlorous acid disinfection water on site,detect and automatically control concentration and pH value of its free chlorine online was designed.A PLC was used as the main controller and a touch screen was used for human-machine interface(HMI).A PID-based control algorithm was used to adjust the concentration and pH value of free chlorine in the disinfection water by adding sodium hypochlorite and citric acid. The adjustment range of free chlorine concentration was 40~180 mg/L and adjustment range of pH value was 6.0~7.0.Matlab was used to simulate the PID control process and adjust the parameters. An online test was conducted,and the control error of free chlorine concentration was less than 10 mg/L and control error of pH value was less than 0.2.关键词
鲜切菜/消毒/PID/次氯酸/游离氯/PLCKey words
fresh-cut vegetables/disinfection/PID/hypochlorous acid/free chlorine/PLC分类
轻工纺织引用本文复制引用
宋程,杜志龙,李佳伟,周航..基于PID的蔬菜次氯酸消毒水在线测控系统设计[J].包装与食品机械,2018,36(2):30-34,5.基金项目
科技部国家重点研发计划项目(2016YFD0400404) （2016YFD0400404）
