基于多向核熵成分分析的微生物发酵间歇过程监测研究  

Batch Process Monitoring for Microbial Fermentation Based on Multi-Way Kernel Entropy Component Analysis

作　　者：常鹏[1] 王普[1] 高学金[1] 

机构地区：[1]北京工业大学电子信息与控制工程学院,北京100124

出　　处：《高校化学工程学报》2015年第2期395-399,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(61174109;61364009);教育部高等学校博士点专项基金(20101103110009)

摘　　要：针对微生物发酵间歇过程监测算法只考虑数据信息最大化未考虑数据簇结构信息的不足,提出了基于多向核熵成分分析(Multi-way Kernel Entropy Component Analysis,MKECA)间歇过程监测的新方法。该方法首先引入AT展开策略对三维历史数据进行预处理,然后通过核映射将数据从低维空间映射到高维特征空间,解决数据的非线性特性,并在高维特征空间依据核熵的大小对数据进行降维,使降维后的数据能够最大化地保留原始数据的分布;同时理论证明了所提方法在特定条件下等同于传统方法,也就是说MKECA既能兼顾传统方法的优势,又能弥补传统方法的不足;最后通过青霉素仿真数据进行验证,表明MKECA方法具有更可靠的监控性能,能及时、准确地监测出故障。Previous studies on batch microbial fermentation usually considered data maximization but lack of data cluster structure information. A Multi-way Kernel Entropy Component Analysis（MKECA） method was proposed to solve this problem, which overcome the drawbacks of traditional monitoring methods on high monitoring failure rates. The AT method was first used for historical data preprocessing and mapping data from low-dimensional space to high dimensional feature space to solve data nonlinearity. Data in the high dimensional feature space was moved to lower dimension based on the size of the data kernel entropy, in order to keep the original data distribution. Meanwhile, the proposed method was equivalent to the traditional method under certain conditions. Penicillin simulation data verifies that MKECA is more reliable and accurate which may have broad potential applications.

关 键 词：MKECA 过程监测 间歇过程 MKPCA 

分 类 号：Q813.11[生物学—生物工程]