基于模糊集的流加发酵控制方法及其实现  

Fed-batch fermentation control method and realization based on fuzzy set

作　　者：王建林[1] 于涛[1] 杨敬杰[2] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029 [2]中原油田石油化工总厂,濮阳457000

出　　处：《仪器仪表学报》2007年第2期268-271,共4页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(20476007)资助项目

摘　　要：乙醇浓度是发酵过程中重要的过程变量,直接影响着发酵过程的优化和控制。通过对酵母发酵生产谷胱甘肽(GSH)的过程机理分析选择了乙醇浓度作为主控变量,构建了相应的模糊控制器对发酵过程流加速率进行优化。利用WinCC(Win-dowscontrolcenter)的全局脚本编辑器将模糊控制算法嵌入到PLC控制系统中,实现了对流加速率的模糊控制。实验表明,比较采用恒流加速率控制时的GSH产量,实施模糊控制后的GSH产量达到了2倍以上。Ethanol concentration is one of the most important variables in the fermentation process,and directily influences the automatic control performance of fermentation system and on-line optimization. The ethanol concentration was selected as the primary control variable after the mechanism analysis of yeast fermentation for Glutathione （GSH） product, and a fuzzy controller was designed to optimize the feed rate of the fermentation process. The fuzzy control algorithm was implemented on PLC system by using the global script of WinCC （ Windows control center）, and the duction optimal feed rate operation under fuzzy controller was realized. Experiment results show that the GSH prothroughput by using the fussy controller is twice higher than that by using the constant feed rate controller. The fussy control method is a remarkable improvement.

关 键 词：谷胱甘肽 流加发酵 模糊控制 WINCC 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]