关键词:

多工况, 非高斯, 外部分析, ICA-PCA, PLS

Abstract: In order to handle the multiple operating modes problem and the widely existing non-Gaussian information of industrial processes, a new online process monitoring method was proposed, which was based on external analysis and independent component analysis and principal component analysis (ICA-PCA).First, process variables were divided into two parts: external variables and main variables, and partial least square (PLS) was used to remove the influence of external variables on main variables.Then a two-step information extraction method ICA-PCA was used to extract the process information completely.Finally, three statistics were built to monitor the process.An online algorithm was also developed.Simulations of a linear system and CSTR process showed the feasibility and effectiveness of the new method.

Key words:

多工况, 非高斯, 外部分析, ICA-PCA, PLS