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化工学报  2012 

一种基于改进KICA的非高斯过程故障检测方法

DOI: 10.3969/j.issn.0438-1157.2012.09.030, PP. 2864-2868

Keywords: 故障检测,核独立元分析,局部保持投影,非高斯信息,局部近邻结构

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Abstract:

针对基于核独立元分析(kernelindependentcomponentanalysis,KICA)的故障检测方法只考虑非高斯信息提取而忽略局部近邻结构保持的问题,提出基于改进KICA的过程故障检测方法。将KICA法中只考虑非高斯信息提取的负熵最大化准则转换为熵最小化准则,结合局部保持投影的相似局部近邻结构准则,提出了同时考虑非高斯信息提取和局部近邻结构保持的目标函数,通过粒子群优化算法进行全局寻优,然后建立监控统计量对过程进行监控。在TennesseeEastman过程上的仿真结果说明,与基于KICA的故障检测方法相比,所提方法能够在保持数据集局部近邻结构的同时,提取非高斯信息,能够有效缩短故障检测的延迟时间,提高故障检测率。

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