文献类型：期刊文献

英文题名：Isolation of whole-plant multiple oscillations via non-negative spectral decomposition

作者：Xia, Chunming; Zheng, Jianrong; Howell, John

机构：[1]E China Univ Sci & Technol, Ctr Mechatron Engn, Shanghai 200237, Peoples R China;[2]Univ Glasgow, Dept Mech Engn, Glasgow G12 8QQ, Lanark, Scotland

年份：2007

卷号：15

期号：3

起止页码：353

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000247900900009)】；

语种：英文

外文关键词：process monitoring; multiple oscillations; non-negative matrix factorization; sparse; spectral analysis; fault isolation

摘要：Constrained spectral non-negative matrix factorization (NMF) analysis of perturbed oscillatory process control loop variable data is performed for the isolation of multiple plant-wide oscillatory sources. The technique is described and demonstrated by analyzing data from both simulated and real plant data of a chemical process plant. Results show that the proposed approach can map multiple oscillatory sources onto the most appropriate control loops, and has superior performance in terms of reconstruction accuracy and intuitive understanding compared with spectral independent component analysis (ICA).