山东大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 123-129.doi: 10.6040/j.issn.1672-3961.0.2017.166
张米露,王天真*,汤天浩,辛斌
ZHANG Milu, WANG Tianzhen*, TANG Tianhao, XIN Bin
摘要: 针对海流机复杂工况下发电过程数据的多模式和模式频繁变动的问题,提出一种模式关联主元分析方法。从理论上分析模式变化对传统主元分析(principal component analysis, PCA)的影响,描述了过程数据多模式下的故障检测问题。提出一种模式标准化算法,动态拟合多模式数据特征。通过构建多模式关联关系,将变化模式引起的统计量差值剔除。通过搭建海流机试验平台,对比所提方法与传统检测方法验证了所提方法的有效性。理论分析和试验结果表明:在海流机变转速同时变载荷工况下,所提方法能够快速准确的检测出故障。
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